Commercial Mower Owner’s Manual
For the Wright Z serial #31897 and higher until superseded
WARNING: READ THIS MANUAL BEFORE USING
For your safety and for proper operation and maintenance read
carefully and keep readily available for future reference.
Revised 06/2007
Additional replacement owner’s manuals as well as illustrated parts lists are available from your
to date product literature. Please note the model number and serial number of your Wright
product.
For reference please note the following information at the time of purchase:
SERIAL # _________________________
MODEL # _________________________
DATE OF PURCHASE ______________________
Wright Manufacturing Inc.
TABLE OF CONTENTS
INTRODUCTION ......................................................................................................................... 3
GENERAL SAFETY INSTRUCTIONS .............................................................................................. 3
OWNER/USER NOTICE .............................................................................................................. 3
USER QUALIFICATIONS.............................................................................................................. 3
USER CLOTHING....................................................................................................................... 4
INSPECT MOWER BEFORE EACH USE......................................................................................... 4
REGULAR MOWER SAFETY MAINTENANCE.................................................................................. 4
WORK AREA CONDITIONS & INSPECTION.................................................................................... 4
INITIAL OPERATING SAFETY GUIDELINES .................................................................................... 5
OPERATION IN FORWARD DIRECTION ......................................................................................... 5
OPERATION IN REVERSE ........................................................................................................... 6
ZERO-RADIUS TURN OPERATION ............................................................................................... 6
OPERATION ON SLOPES ............................................................................................................ 6
FUEL SAFETY........................................................................................................................... 7
HYDRAULIC SAFETY.................................................................................................................. 7
REPLACEMENT PARTS .............................................................................................................. 7
HOW TO START THE MOWER ...................................................................................................... 9
HOW TO DRIVE THE MOWER....................................................................................................... 9
HOW TO STOP AND PARK THE MOWER ..................................................................................... 10
DRIVING THE MOWER OVER A CURB ........................................................................................ 10
MOWING ON VARYING TERRAIN ............................................................................................... 10
HOW TO ADJUST NEUTRAL...................................................................................................... 11
HOW TO PERFORM THE TRACKING ADJUSTMENT....................................................................... 11
HOW TO TEST/USE THE BLADE CLUTCH/BRAKE SWITCH............................................................ 11
SERVICE AND ADJUSTMENTS ................................................................................................... 12
Height-of-Cut.................................................................................................................... 12
Battery Service................................................................................................................. 12
* * This Page Intentionally Left Blank * *
Pre-Delivery Service of Mower by Dealer
If you are not completely familiar with the Safety Instruction
Manual read it now before proceeding with the Pre-Delivery
Service of the mower. Only your authorized Wright dealer
should perform the Pre-Delivery Service of the mower.
WARNING
The Wright Z is shipped assembled and has been adjusted and tested at the factory. However, due to
jostling during the shipping process and the delivery time lapse the following items need to be repeated
again before starting the mower. After you have uncrated the mower, follow these procedures in the
order indicated:
• Remove spark plug wire from spark plug(s).
• Inspect the mower for any damage, unusual conditions or missing parts. Seat may be detached for
crating purposes. Make sure all hardware is present.
• Inspect the mower for all of its decals, especially the warning decals. There should be one blade
warning decal on each side of the deck, the “shield missing” under the blade belt covers, and the
dash decal. The Park Brake and General Safety Decal should in place near the brake lever.
• Check (and fill if necessary) engine oil level according to the engine manufacturer’s recommendation.
• Check (and fill if necessary) hydraulic fluid level. The level should be about 1”-1.5” below the top of the
oil fill. Use synthetic oil: Mobil1 15W-50.
• Check rear tire pressure - 18 to 22 psi. is recommended. It should be even on both sides. Use the
higher pressures for heavier operators. The front caster tires are a non-pneumatic style wheel, and
do not require air pressure.
• Check the battery to see that the cables are tight and connected properly. The battery is 12 volts and
is a maintenance-free battery. Only charge the battery if it will not sufficiently start the mower.
• Remove the blade belt covers and inspect the belt and idler arm for smooth operation.
• Rotate the blade pulleys slightly to see if they rotate freely and all turn together. There will be
resistance due to the clutch brake.
• Replace the blade belt covers.
• Check the Rapid-Hite deck height adjustment mechanism for proper operation. Pressing the lift pedal
all the way down will engage the latch mechanism. Releasing pressure from the pedal should
allow the latch to lock the deck in the transport position. Pressing on the pedal again should
release the latch mechanism and allow the deck height to be set according to the location of the
deck-height detent pin.
• Lubricate all moving parts (see Maintenance Items section of this manual).
• Fill fuel tank with regular unleaded gasoline. Turn fuel tank selector valve left or right, depending which
tank is filled with gas. Note: the downward position is off. The fuel tank selector valve is located in
the rear of the seat frame on the left side.
• DO NOT START THE ENGINE AT THIS TIME. FOLLOW THE NEXT PROCEDURE BEFORE
STARTING. The hydraulic system MUST be checked for proper operation before allowing wheels
to operate on the ground.
• Set the rear of the machine on jack stands or blocks to raise rear wheels off the ground two or three
inches and check to be sure that the mower will not fall off the supports you devise. The stand(s)
must be able to secure the mower from rolling off or away during the next procedures. Check
under the mower deck for any debris or unusual conditions.
• With hand controls in the neutral and outward position, apply the parking brake.
• Open the manual bypass valves on front-side of each pump a half-a-turn counterclockwise. The pump
bypass valves are accessible by lifting the seat tray.
• Reattach spark plug wires to spark plugs.
1
• Before starting the engine be ready to stop it if the wheels begin to turn with the brake on. (If this
happens, check that the manual bypass valves on side of each pump are open at least a half-a-turn
counterclockwise.)
• Start the engine according to the engine manufacturer’s recommendation. Let the engine run at low
RPM for several minutes to get the hydraulic fluid circulating through the pumps. It will be
necessary to use a pair of locking pliers to activate the seat OPC plunger switch while standing
beside the unit. Release the Parking Brake cautiously as the wheels may start to move. Now
gradually tighten the manual bypass valves on the front of each pump one at a time and see if the
wheels start to move. If the wheels move when the hand controls are in neutral position, adjust the
pump neutral adjustment Allen screw. This procedure is described in the Operating instructions
portion of this manual. The manual bypass valves on side of each pump should now be firmly
closed. (Do not tighten these bypass valves with a wrench. Only hand tighten). Now try moving
the hand control levers, one at a time, forward and backward. Check to see if the wheels move
forward and backward according to position of the levers. If not, service the hand control system.
If the wheels stop when the hand controls are in the neutral position, the parking brake should now
be applied. Remove locking pliers from OPC, the blade testing will require that you are seated on
the unit for your safety. Failure to comply could result in serious injury.
• Before testing the blade clutch/brake operation, make sure the area is clear and there is nothing
vulnerable to being thrown from under the mower. No one should be near the mower deck or in its
line of discharge at this time or at any time. The discharge chute deflector should be in the down
position. Move the engine throttle to ¾ speed setting. Note: the Blades will not operate in with the
parking brake engaged.
• Be sure that you are sitting on the operator seat and turn on the blade clutch switch. Run blades for a
minute or so. Try engaging and disengaging the blades a few times about 10 seconds apart. If the
blades do not start and stop in a short amount of time, service the blade brake system. With the
blades on, now try lifting your weight off the operator seat to test the Operator Presence Control
switch (OPC). The engine should die and the blades should begin to stop after a ½ second delay.
The blades should come to a stop in several seconds. If not, service the OPC system. Try this a
couple of times.
• Disengage the blades, set the parking brake, shut off the engine and remove the mower from the
stand(s).
• Drive the mower around on a level parking lot. Be sure that the mower drives in a straight line when
both hand controls are held to the full speed position. If not, see further in this manual for
information on tracking adjustment.
• As you drive the mower, listen for any unusual noises and test for irregular operation and adjust or
service as necessary. Next, go over the safety information and operating procedures in this
manual with the customer. Instruct the customer in proper operation and observe the customer
during their initial operation on a level parking lot. Make sure the customer is familiar and
comfortable with the basic operation and use of the mower.
• Dealer: Please fill out and follow the instructions on the Product Registration Form and have the
customer fill out their portion of the form. After the Product Registration Form is filled out and
signed by the customer and a representative from your dealership, please send or fax it within 14
days to your Wright Manufacturing Distributor according to the directions on the Form. Give the
customer their copy of the registration form and keep your copy for your records. The remaining
copies of the forms should be mailed to your Wright Manufacturing Distributor. The limited
warranty is not valid unless the mower is registered and all of the above steps are taken.
Remember, the purchaser is both your and our customer and his satisfaction is very important.
Thank you for supporting our products.
The mower is now ready for delivery to your customer
2
SAFETY INSTRUCTIONS
WRIGHT MOWER USERS & OWNERS: READ THIS MANUAL BEFORE USING
PLEASE BE CAREFUL!
CAUTION
WARNING
This symbol with the word “CAUTION”
indicates a potentially hazardous situation
which, if not avoided, could result in minor
or moderate injury.
This symbol with the word “WARNING”
indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
Introduction
This mower is built to the highest standards in the
industry. However, carelessness or operator error
may result in serious bodily injury or death.
Accident and hazard prevention are dependent
upon the awareness, concern, wisdom, and
proper training of the personnel involved in the
operation, transport, maintenance, and storage of
the equipment. Make sure every operator is
properly trained and thoroughly familiar with all of
the information in this manual before operating
the equipment.
WARNING
Owner/User Notice
The owner’s/user’s obligation is to instruct
themselves and all potential users in the safe
operation of this equipment and be sure they read
and follow the instructions in this safety manual
and other material provided by Wright
Manufacturing, Inc. before using or allowing
others to operate the equipment. Do not operate
this unit unless you carefully read, understand
and follow the operation and safety instructions
contained in this manual and the warning decals
provided on the unit. Do not allow other persons
to use this unit unless you make sure they
carefully read, understand and follow these
instructions. Never allow children to operate or
play on the unit.
General Safety Instructions
The Wright Z is designed with your safety in mind.
It has the following safety systems with which you
should become familiar:
•
•
•
The warning decals on the mower including
the parking brake and general warning decal
The blade switch must be “off” before starting
the engine
You must be seated with the Park brake on
and control levers in neutral to start engine.
Neutral refers to the outward lever position.
You must be seated to engage the blades
If you lift off the seat while the blades are
running the engine will stop and the blades
will brake in seconds
WARNING
User Qualifications
•
•
This product is designed for use by physically fit,
experienced, professional commercial mower
operators who have a minimum of 160 hours of
experience operating twelve horsepower and
greater industrial mowers. Operators must be 18
years or older and weigh at least 120 pounds and
no more than 300 pounds. They must have read
and understood this manual. DO NOT allow
children to operate the mower. Never allow
passengers on the mower. DO NOT allow adults
to operate the mower without proper instruction as
mentioned above.
•
Spring loaded chute deflector helps reduce
trajectory of thrown objects
•
•
Belt/pulley covers on cutter deck
Low center-of-gravity (CG) to improve stability
on hills
3
tire(s) with less than 3/32” of any tread groove left.
Use tires with the tread pattern specified by
Wright Mfg., Inc. only. DO NOT change the
engine governor settings or over-rev the engine
contrary to engine manufacturer specifications.
Failure to comply can compromise operator
safety, shorten equipment life and void your
manufacturer’s warranty. Keep all nuts, bolts, and
screws tight to be sure the equipment is in safe
working condition. Check the blade mounting
bolts for proper tightness every eight (8) hours of
operation. Check the blades for excessive wear
and sharpness every four to eight (4-8) hours of
operation. Sharpen dull blades. Replace blades
when they become excessively worn. The mower
should not be used after the blades or other part
of the mower strikes a foreign object, until
conducting a thorough inspection and any
damage is repaired. Make sure the chute
WARNING
User Clothing
DO NOT operate the mower while wearing
sandals, tennis shoes, sneakers, or shorts.
Always wear long non-baggy pants. Wear high-
top leather steel-toed work boots with thick,
textured tread, soft-rubber soled at all times.
Hard or smooth soled shoes are too slippery for a
good footing on mower platform. NEVER wear
loose-fitting clothing or jacket pockets that can get
caught on the handlebars or control levers of any
mower you drive. Wearing safety glasses, ear
protection and safety shoes is advisable and
required by some local ordinances and insurance
regulations.
deflector is always in place and operating
properly. Replace if the deflector becomes worn
or ceases to properly deflect the grass in a safe
manner. See the instructions in the
Recommended Maintenance section of this
manual for other items of required maintenance.
WARNING
Inspect Mower Before Each Use
DO NOT use the mower if any parts are not
maintained in good operating condition. Examine
the moving parts prior to each use. Look for
excessive wear, bald or worn tires, cracks in
parts, loose or missing bolts, cotter pins, linchpins
or “hair” pins or cable yoke pins and replace
before operating the mower. Make sure all safety
equipment provided with the mower is in good
operating order, including all the warning decals
and the required operator-presence device which
stops the engine and blades when the seat-
operated Operator Presence Control (OPC)
switch is released. (To test the OPC, follow
of this manual.) Be sure that all parts of the hand-
operated hydraulic control system are tight and
secure. This is to reduce the possibility that the
mower could have a loss of control during
WARNING
Work Area Conditions & Inspection
Prior to operating the unit, carefully inspect all
lawn/ground areas where you plan to use the
mower for hidden, hard-to-see objects or uneven
ground that may be hidden in the grass. Clear the
work area of moveable objects such as wires,
rocks, glass, toys, etc. that might be picked up by
the mower and dangerously thrown. Remove, if
possible, or mark the location of all immovable
objects or irregular areas and be sure not to hit
them with any part of the mower, its deck or the
blades. Obstacles such as holes, abrupt changes
in ground contour, tree trunks, stumps or roots,
pipes protruding from the ground, paving edges,
etc. in the path of operation can abruptly turn or
stop the mower. This could possibly throw you
into the control levers or even off the mower,
causing serious injury or death. The faster you
are moving the more potential there is for injury.
Mow only in daylight or in good artificial light.
Keep away from drop-offs, the edges of ponds,
streams, pools, etc. especially at the bottom of
slopes. Do not mow when children or others are
nearby. When the Wright mower is in use, never
operation and compromise operator safety.
WARNING
Regular Mower Safety Maintenance
Keep your Wright mower in good operating
condition, and keep safety devices and shields in
place and in working condition. Replace worn
4
direct the grass discharge toward bystanders,
traffic, cars or buildings nor allow anyone within
50 feet of the machine while in operation. Thrown
objects can pass through glass windows and
some walls of buildings. There is extreme risk of
danger from thrown objects or being cut by the
blades of the mower. Never operate the mower in
an enclosed area without good, approved
• DO NOT allow inexperienced persons to
operate the mower until they have read and
understood these safety instructions.
Operate the mower at slower speeds while
becoming familiar with it.
• The grass discharge chute deflector must be
installed at all times and in the down position
except that it may be raised when cleaning
out the deck, or a grass catcher is installed
or a mulch kit and block-off plate is properly
installed.
ventilation. Exhaust fumes are dangerous.
• If the mower discharges grass clogs, turn off the
blade clutch switch, apply the parking brake,
stop the engine and remove the key before
removing obstruction(s).
• Keep all shields and covers in place, namely, all
blade and belt covers, engine shields, and
grass discharge chute deflector.
• Keep hands, feet and clothing away from
rotating parts, especially the rear wheels,
blades, engine flywheel, belts and pulleys.
• Do not touch engine, muffler or hydraulic
system while engine is running or soon after
it is stopped. These areas can be so hot as
to cause severe burns.
• Clean grass, leaves and lubricant spills from
surfaces after use to prevent fire hazard.
• Be alert for traffic when crossing roads or
operating near roadways.
WARNING
Initial Operating Safety Guidelines
• Read and understand the warnings on the
general warning decal on the mower.
• Keep both feet on the foot platform at all times.
• Know the controls and how to stop quickly.
• Before attempting to start the engine, follow all
starting instructions below and in the engine
operator’s manual.
• Look behind before backing up.
• Before leaving the operator’s seat, even
momentarily, turn off the blade clutch
engagement switch and apply the parking
brake. Keep others from coming near the
mower. Get back on the mower as soon as
possible.
• When leaving the Wright mower unattended,
turn off the blade clutch engagement switch,
apply the parking brake, stop the engine and
remove the key. Never leave the machine
unattended on a slope in case someone
disengages the parking brake. This could
create a rollover hazard.
• Before climbing curbs, crossing gravel drives,
sidewalks or roads, turn off the blades and
wait for them to stop, then place deck into
transport position.
• When transporting, driving onto transport
vehicles, into buildings, across parking lots
or otherwise not mowing grass, turn off the
blade clutch engagement switch to reduce
risk of thrown objects and rotating blade
hazard. After coming to a stop apply the
parking brake, stop the engine and remove
the key.
• Before performing any maintenance or repair
service, disengage power to blades, apply
the parking brake, stop the engine, remove
ignition key and spark plug wire from spark
plug(s).
WARNING
Operation In Forward Direction
Operate the mower slowly until you become
familiar with how the mower operates. Do not
operate the mower faster than conditions allow.
For example, hills, wet or bumpy ground, dim light
or high grass are all conditions requiring slower
speeds. Never operate the mower at the highest
speed unless you are on level, wide, open areas
of clearly visible ground or transporting on paved
areas. Speeding with any mower is dangerous,
and so is traveling faster than conditions should
permit on this mower. Sudden stops from
excessive speed or falling off the mower may
cause serious injury or death.
• All operators of this mower should exercise
caution when driving this mower at high
speeds. Sudden acceleration or
deceleration may cause serious injury.
5
When pointing up a slope, your mower has the
most weight on the drive wheels and therefore the
most traction at the tires. However, this is the
angle that it has the most tendency to tip back
(“pop a wheelie.”) This is the preferred angle for
mowing small areas of steeper slopes.
Operation In Reverse
Keep both feet on the foot platform at all times.
Look behind you before backing to prevent
injuring yourself or anyone behind you. Operate
the mower very slowly, inching it backward until
you become familiar with how the mower
operates. Always operate slowly if in an awkward
location or position. While backing up never place
your foot or feet near the wheels or the mower
deck to prevent serious personal injury. The
control system is equipped with a return to neutral
from reverse spring. This is to aid the operator in
returning the mower to neutral after a reverse
maneuver.
Recommendations for this angle:
• Lean as far forward as possible to shift your
weight to the front of the mower.
• Accelerate gently. Do not accelerate quickly to
avoid “popping a wheelie”.
• If backing down the hill, do not stop suddenly
but slow down gradually.
When pointing down a slope, your mower has
the least weight on the rear drive wheels and
therefore the least traction at the tires. This is the
angle that the mower has the most tendency to
slide. However, this is the angle that it has the
least tendency to tip back. Avoid this angle, as it
has the least advantage for your mower.
WARNING
Recommendations for this angle:
Zero-Radius Turn Operation
During zero-radius turns (when one mower wheel
rotates backwards while the other rotates forward)
drive extra slowly to reduce the possibility of
losing traction, or control, or becoming dizzy. This
will help prevent you from being thrown off the
mower or into the control levers. Be aware that if
you do a turn on a slope you may go through all of
the orientations to a slope mentioned below and
must handle the mower accordingly.
• Sit back as far as you can on the seat. This
adds more of your body weight to the drive
wheels for more traction.
• Do not change speed suddenly to minimize the
tendency of going into a slide. Accelerate
and decelerate gently. If you ever go into an
uncontrolled slide while pointing down a
slope the recommended procedure is to let
go of the handles and jump off if necessary.
Otherwise, control the mower gently and
stay off slopes that tend to make the wheels
slide.
WARNING
When crossing a slope sideways, your mower
has the average amount of weight on the drive
wheels versus the front wheels, similar to level
ground. However, this angle leaves the least
weight on the higher side drive wheel, tending to
make it slip. This is the preferred angle for
mowing large areas of gentle slopes.
Operation on Slopes
DO NOT operate on steep slopes. Do not
operate the mower on slopes steeper than you
can feel secure about the traction of the tires and
the stability of the mower. Do not operate the
mower on slopes at all when the grass is wet.
There is a danger of suddenly sliding sideways or
down the hill. When operating on a slope, travel
across the grade whenever possible, not in an up
or down pattern. Reduce speed and exercise
extreme caution on slopes and in sharp turns to
prevent tipping or loss of control. Be especially
cautious when changing direction on slopes.
Recommendations for this angle:
• Sit back, as far as you can on the seat. This
adds weight to the rear drive wheels and will
allow you to mow more quickly across the
slope without sliding. Remember it is
recommended that operators weigh at least
120 pounds and not more than 300 pounds.
These are general guidelines only. The
mower function and comfort will vary
6
depending on mowing environment,
operator driving style and preference.
• To reduce the chances of “popping-a-wheelie”,
do not accelerate quickly.
WARNING
Replacement Parts
Note: Excessively worn tire tread is dangerous.
Replace tire(s) with less than 3/32” of any tread
groove left. Use tires with the tread pattern
recommended by Wright Mfg., Inc. only. Keep the
tire pressure in the drive tires between 18 and 22
psi. Higher pressures will cause the tires to have
less traction which may prevent safe operation.
The front caster tires do not require air.
Use of parts other than specified parts supplied by
Wright Manufacturing, Inc. may compromise the
safe use of the mower, are not recommended and
their use could void the warranty. Always check
with your Dealer or the Wright Mfg website for the
latest Illustrated Parts List for your equipment.
Wright is fully concerned with your safety.
Please read the above again and again until
you fully understand the methods to promote
the safest operation possible.
WARNING
REMEMBER – YOUR MOWER CAN BE ONLY
AS SAFE AS THE OPERATOR.
FAILURE TO FOLLOW SAFE OPERATING
PRACTICES MAY RESULT IN
Fuel Safety
Handle gasoline with care – it is highly flammable.
Do not smoke while handling gasoline. Use an
approved gasoline container. Never remove the
fuel cap or add gasoline to a running or hot
engine or an engine that has not been allowed to
cool for several minutes after running. Never fill
the tank indoors and always clean up spilled gas.
NEVER store the equipment with gasoline in the
tank inside a building where fumes may reach an
open flame or spark. Allow the engine to cool
before storing in any enclosure.
SERIOUS INJURY OR DEATH.
WARNING
Hydraulic Safety
Use paper or cardboard and not hands to search
for leaks. Keep body and hands away from pin
holes or fittings that eject hydraulic fluid under
high pressure. Hydraulic fluid escaping under
high pressure may have sufficient force to
penetrate skin and cause serious injury. If foreign
fluid is injected into the skin, it must be surgically
removed within a few hours by a doctor familiar
with this form of injury or gangrene may result.
Seek medical attention immediately. Make sure
all hydraulic fluid connections are tight and all
hydraulic hoses and lines are in good condition
before starting your Wright mower. Hydraulic fluid
is under high pressure. If you need service on
your hydraulic system, please see your authorized
Wright dealer.
7
8
OPERATING INSTRUCTIONS
If you are not completely familiar with the Safety Instruction
Manual read it now before proceeding with the operation of the
mower. REMEMBER THERE ARE CERTAIN PRECAUTIONS
LISTED IN THIS MANUAL THAT YOU MUST NOW TAKE
BEFORE STARTING THE MOWER.
WARNING
Inspect Mower Before Each Use
Inspection of Mower: Do not use the mower if any parts are not maintained in good operating
condition. Examine all moving parts prior to each use. Look for excessive wear, bald drive tires or worn out
front tires (normally smooth), cracks in parts, loose or missing bolts, cotter, linchpin or “hair” pins or cable
yoke pins and replace before operating the mower. Make sure all safety equipment provided with the
mower is in good operating order, including all warning decals and the operator-presence device which
stops the engine and blades when the seat-operated Operator Presence Control (OPC) switch is released.
To test the OPC, follow the instructions given later in this manual. Ensure that all parts of the control-lever
control system are tight and secure. This is to reduce the possibility that the mower could have a loss of
control or safety.
Basic Operation: The following procedures are to guide you through the basic operation of the mower.
You should be a qualified mower operator according to the safety section of this manual. If this is your first
time, operation should only be done with the assistance of your dealer on a level area. You should go
through each step, in the order indicated, every time you start the mower.
How to start the mower
Before starting the engine
• Make sure the control levers are in the neutral, outward position
• Apply the parking brake if it is not already set.
• Turn OFF the blade engaging switch if it is on.
• Turn fuel valve to the Left or Right, depending which tank you choose to use. Note: The fuel valve is
located on the left side of the rear of the seat frame.
Starting the engine
Electric Start:
•Start the engine according to the engine manufacturer’s recommendation, see engine manual. Set the
throttle control lever near mid throttle. Set the choke lever to full choke. Turn the key to the start
position. Do not engage the starter for more than ten (10) seconds at a time. This may overheat the
starter and the wiring systems. Wait ten (10) seconds between attempts. If the engine does not start
after several attempts or stalls frequently, take the mower in for service.
After starting the engine according to the engine manufacturer’s recommendation, pull back on the choke
control knob to open the choke valve, let the engine run for several minutes to get the hydraulic fluid
circulating through the pumps, etc. and to allow the engine to warm up. Do not over-rev a cold engine.
Unusual noises or irregular operation:
As you drive the mower, listen for any unusual noises and test for irregular operation and adjust or service
as necessary.
How to drive the mower
While sitting, both feet should be firmly placed on the foot platform. Set the engine speed about a fourth of
the way from idle. Release the parking brake. Now try moving the hand control levers, one at a time, very
9
slightly, forward and backward. Check to see if the wheels move forward and backward according to the
position of the levers. If not, check to see that the pump release valves are closed. The pump release
valves are accessible by lifting the seat. With both feet still firmly placed on the foot platform, increase the
engine speed to about half of the way from idle speed. Release the parking brake. The higher engine
speed will make the controls much more responsive and the mower much quicker; Use caution if it is your
first time. Now try moving the hand control levers, one at a time, very slightly, forward and backward.
Gradually increase your speed until you are well acquainted with the operation of the hand controls and the
mower’s behavior. After gaining a good feel for how the mower handles, gradually attempt higher engine
speeds until familiar with operation at full throttle engine speed.
How to Stop and Park the Mower
Come to a complete stop. If the blades are on, turn them off using the blade switch on the instrument
panel. Make sure the control levers are in the neutral outward position. Set the parking brake, reduce the
engine speed to idle, shut off the ignition switch to stop the engine and then remove the key from the
ignition switch. The mower is now parked. Do not leave mower unattended on a sloped surface.
Driving the Mower Over a Curb
Next, raise the mower deck into the locked transport position. This is the highest position for the mower
deck. Then drive the mower in reverse at a 45 degree angle to the curb (with the left side of the mower
closest to the curb) until you are within an inch or two of the left-rear tire hitting the curb. Stop and then
gradually bump into the curb with that tire until it is just on top of the curb. If the tire slips even while
lurching the mower into the curb, then the curb is too high and you should use ramps or find another way.
The mower should still be at a 45 degree angle to the curb. Now, while maintaining the same angle to the
curb, continue to back up until the right-rear tire is close to the curb. Using the same technique lurch the
right tire onto the curb. After both rear wheels are on top of the curb, turn the mower counterclockwise and
back up so the left caster wheel comes over and last should be the right caster wheel as the mower is
twisting to the left (counterclockwise). The technique works the best if you try not to drive backwards at a
near 90 degree angle to the curb but get all of the wheels to go over while the mower is moving at least a 45
degree angle to the curb. To drive off a curb, first try driving up onto it to make sure the curb is not too high.
If the curb is not too high, drive the right-front caster off first while driving toward the curb at a 45 degree
angle (the curb should be to your right). Then, maintain that 45 degree angle so the left caster goes over,
then the right-rear wheel, then the left rear wheel. Do NOT step off the mower during ANY maneuver.
WARNING
Never drive straight onto or off a curb.
Never drive straight onto or off a curb. If you do the whole procedure at a very sharp angle it will tend to
minimize the contact of the mower deck with the curb and you will be able to more safely control the mower.
Mowing on Varying Terrain
10
How to Adjust Neutral
Neutral refers to the mower movement when the engine is set to full throttle, parking brake is off, and the
control levers are in the neutral position. The mower should not move forward or backward during this time.
If the mower is moving forward or rearward, the neutral setting must be adjusted. The hydraulic pump has a
Return-to-Neutral (RTN) device built into the linkage of the pump. Before adjusting neutral, it is necessary
to lift the rear drive wheels off the ground using a jack and stands. Additionally, the OPC switch will need to
be engaged. This can be achieved using a pair of locking pliers. To make the adjustment, loosen the ¼”
Allen bolt and rotate the RTN device on the pump corresponding to the wheel that needs adjustment. This
will require the removal of the wheel needing adjustment for access to the Allen Bolt. If the right wheel turns
in the neutral position, then the right pump RTN needs to be adjusted. The RTN mechanism should be
rotated until the neutral position is found and then retighten the ¼” allen bolt. Use care not to over tighten
the allen bolt. Repeat the procedure on the other pump if necessary.
How to Perform the Tracking Adjustment
First ensure that the tire pressure is equal on both rear drive tires (18-22 psi). Drive the mower on a level
parking lot with the engine at full throttle. Check that the mower drives in a straight line when both hand
controls are held to the full speed position. If not, park the mower and stop the engine. The adjustment is
made by loosening the jam-nuts on the control rods (this may need to be done to one or both control rods)
and adjusting the control rods. Once the jam-nuts are loosened at the top and bottom of the control rod
proceed to turning the control rod clockwise or counter-clockwise to lengthen or shorten the effective length
of the control rod.
If the rod is made longer it will increase the forward speed capability for that side of the mower and if the rod
is made shorter it will slow down that side of the mower. Therefore, if the mower is tracking to the left, either
the left side needs to go faster (by lengthening the left-side rod) or the right side needs to go slower (by
shortening the right-side rod). If the mower is tracking to the right, either the right side needs to go faster (by
lengthening the right-side rod) or the left side needs to go slower (by shortening the left-side rod). It is
important that neither rod should be lengthened too far, as mentioned above.
After getting the mower to track straight, readjust the neutral adjustment on the pump by using a ¼” allen
wrench at the Return-to-Neutral (RTN) mechanism, if necessary. It is normal to make these adjustments
from time to time.
How to Test/Use the Blade Clutch/Brake Switch
Before testing the blade clutch/brake operation, make sure the area is clear and there is nothing vulnerable
to thrown objects from under the mower. No one should be near the mower deck or in its line of discharge.
The discharge chute deflector should be in the down position. The parking brake should now be applied.
Move the engine throttle to ¾ speed setting. When mowing, the engine speed should always be at its
highest setting. The engine governor will regulate the engine according to the different mowing conditions
at that setting. Sit evenly on seat and keep both feet firmly on the foot platform and turn on the blade clutch
switch. Run blades for a minute or so. Try engaging and disengaging the blades a few times about 10
seconds apart. If the blades do not start and stop in a few seconds each time, service the blade brake
system or contact your local Wright dealer. Under mowing load, the clutch’s life will be the greatest if
engaged and disengaged at the ¾ throttle level.
How to Test the Operator Presence Control (OPC) Switch
With the parking brake applied and the blades ON, try lifting your weight off the seat to test the Operator
Presence Control switch (OPC). The engine should begin to kill after a ½ second delay and the blades
should stop within a few seconds. If not, service the OPC system or contact your local Wright dealer.
11
WARNING
Service and Adjustments
Tire Maintenance and Pressure
Excessively worn tire tread is dangerous on all hills. Replace drive tires with less than 3/32” of any tread
groove left. Use tires with the tread pattern recommended by Wright Mfg., Inc. only. Keep the tire pressure
in the drive tires between 18 and 22 psi. Higher pressures will cause the tires to have less traction, which
will force you to go slower and with less safety and give you a harder ride. The front casters are equipped
with non-pneumatic tires and do not require any air. They do not have any tread but should be replaced
when excessively worn.
Height-of-Cut
Before adjusting the height-of-cut be sure the mower blades are off, and the rear tires have proper air
pressure. Check for even tire wear. The height-of-cut can be adjusted the following way:
• The cut height is set by allowing the foot lever to rest on a detent pin inserted into the height selection
plates. To set the height of the pin, raise the mower deck to the transport height position and lock in. This
is achieved by pressing the pedal all the way down until the latch system engages the pedal and locks the
deck up in the transport position. With the load removed from the detent pin, it can be changed to the
desired cut height. Once the pin is securely connected to the selector plate, the deck can be lowered to
the desired cutting height by pressing in on the deck-lift foot pedal until the latch releases the pedal. Now
the deck can be lowered until it comes in contact with the pin.
If the deck is leaving stripes, it may be necessary to check the adjustment on the four deck hangers.
Each of the four chain hangers connecting the mower deck to the lift assembly has an adjustable pivot
plate located on the top of the mower deck. On a flat and level surface, the pitch and side-to-side
variation should be checked regularly. Note: it is necessary to have a front to rear pitch of 1/4 inch aiming
the front of the deck toward the ground. Adjust one side at time when setting deck height adjustment.
Belt Tension Adjustment
The pump drive belt is self-adjusting, and requires no adjustment. The blade drive belt is self-adjusting also
and requires no adjustment. Replace tension idler assembly if worn or failing to maintain proper tension.
How to Move the Mower if the Engine Won’t Start
Rotate both of the hydro bypass valve levers on the side of each hydraulic pump about ½ turn
counterclockwise. It is important not to over tighten these levers. Damage may occur to the pump if this
valve is over tightened.
Bleeding Air from the Hydraulic System
Whenever servicing the hydraulic system, it is of the utmost importance to keep any dirt or debris from
getting into the system. Clean off all parts before disassembly and assembly. When any of the hydraulic
parts are disconnected or removed or when the oil is changed, air must be bled from the system. If air is
entrained in the system, loss of power, excessive heat, and damage to the hydraulic pumps may occur.
First, make sure the oil level in the reservoir is correct. The level should be between 1”-1.5” below the top
of the oil fill tube. Use fully synthetic oil: Mobil1 20W-50. Lift the mower so that the rear wheels are off the
ground. Be careful to support the mower so that it will not fall or tip while the system is bled of air. With the
bypass valves open and the engine running, slowly move the control levers back and forth five or six times.
Now close the bypass valves and with the engine running, slowly move the control levers back and forth five
or six times. It may be necessary to repeat the above steps until all the air is purged and the rear wheels
are turning at normal speed. After purging is complete, adjust the oil level in the reservoir if necessary.
Battery Service
The battery is 12 volts and is a maintenance free battery. Charge the battery only if it will not start the
mower effectively. Remove the battery from the mower before charging. Follow the instructions of the
12
battery charger for proper and safe charging of the battery. Always make sure the Positive terminal is
connected to the Positive battery post and the Negative terminal is connected to the Negative battery post.
Reversal could cause damage to the electrical system.
Cleaning the Mower
The underside of the mower deck should be checked and cleaned twice daily, and more often if the grass
being mowed is lush or wet. The entire mower should be cleaned daily at the end of the work day.
Cleaning should be done with a leaf blower or low-pressure compressed air. Wash with water only when
necessary and do not use a pressure washer or nozzle as the water can enter electrical connections
causing an electrical short, rust and corrosion. When washing with water, do so when the unit has cooled
down. Washing a hot machine can cause various unseen system damage. If water is used for cleaning,
immediately dry it with a leaf blower or low-pressure compressed air. Once the wash is complete, always
lubricate and grease all applicable areas.
13
14
Maintenance Interval Chart
MAINTENANCE ITEM
Inspect for cracks in frame, cutter deck or other steel parts
Inspect all belts for wear, adjustment and alignment
Check all bolts and nuts for tightness (tighten as necessary)
Lubricate hand control lever pivot shafts with waterproof grease
Check hydraulic oil reservoir level and fill as needed - Use SYNTHETIC oil -
Mobil1 15W-50
X
X
X
X
X
X
X
X
*3
*2
X
X
X
X
X
X
X
X
X
Grease caster wheel bearings
X
X
Check tire pressure; Rear tires 18-22 psi. Front Casters are equipped with non-
pneumatic tires and do not required any air.
Check and clean engine cooling fins
Lubricate seat platform with waterproof grease
Replace fuel filter
Lubricate choke control cable with WD-40
Check engine oil and add as needed
Check for fuel or oil leakage - correct as needed
Check and clean air intake screen
Clean engine blower screen and fins with compressed air
Clean mower with compressed air-do NOT use a pressure washer
Check for loose hardware (e-clips, snap rings, nuts, etc.)
Check blades for wear and sharpness (sharpen and balance or replace as
necessary)
X
X
X
X
X
X
X
X
Engine *1
Engine *1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Engine *1
Engine *1
Engine *1
Engine *1
X
X
Clean out debris under blade belt cover
Scrape clean underside of cutter deck
Check blade mounting bolts for proper tightness
Check blade spindle mounting bolts for proper tightness
Clean air cleaner foam element
Inspect tires, replace as needed
Inspect and tighten all hydraulic hoses
Adjust parking brake shoes to firmly stop wheels when engaged
Clean air cleaner paper element
Clean and re-gap spark plug (replace as necessary)
Change engine oil
Change engine oil filter
Replace air cleaner paper element
Replace hydraulic oil filter with Original Wright filter
Completely inspect for excessive wear in all parts of mower, including control
system (replace worn parts)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Engine *1
X
X
X
X
Engine *1
Engine *1
Engine *1
Engine *1
Engine *1
X
X
X
X
X
X
X
X
X
Inspect and replace (if necessary) worn main cutter deck idler pulleys or pulley
bearings (if applicable)
Replace (if necessary) excessively worn caster wheels and roller bearings
Remove battery and clean battery, battery box and battery cable ends
Clean combustion chamber
Check and adjust valve clearance
Clean andlap valve seating surface
X
X
X
X
X
X
X
Engine *1
Engine *1
Engine *1
NOTES:
*1 - Refer to Engine Manufacturers Owners Manual
*2 - Hydraulic fluid level should be 1"-1-1/2" below the top of the oil fill
*3 - Contact an authorized Dealer immediately if any cracks are found
*The service intervals indicated are to be used as a guide. Service should be performed more frequently as necessary by operating conditions*
15
16
WRIGHT MANUFACTURING, INC. POWER EQUIPMENT LIMITED WARRANTY
THIS WARRANTY SUPERSEDES ALL PREVIOUS ON UNITS WITH A RETAIL SALES DATE ON OR AFTER 04/01/05
The WMI mower, including any defective part, must be returned to an
Authorized WMI Service Dealer within the warranty period. The expense of lost
production time and delivering the mower to the Authorized WMI Service Dealer
for warranty work and the expense of returning it to the Owner after repair will
be paid for by the Owner. WMI’s responsibility is limited to making the required
repairs and no claim of breach of warranty shall be cause for cancellation or
rescission of the contract of sale of any WMI mower. This Warranty does not
apply to any mower that was delivered to an Owner prior to the Pre-Delivery
Service as specified in the Owner’s Manual. This Warranty does not apply to
any mower that was shipped in a crate to the Owner or delivered to the Owner
by non-employees of an Authorized Dealer. For the Owner’s protection and a
valid Warranty, please note: WMI does not permit Authorized Dealers to make
non-face-to-face deliveries of the mower and any who are found doing so are
subject to immediate cancellation as Authorized Dealers. This Warranty does
not cover any mower that has been subject to misuse, neglect, negligence,
burning in any fire, an accident, or that has been operated or maintained in any
way contrary to the operating and maintenance instructions as specified in the
Owner’s Manual. The Warranty does not apply to any damage to the mower
that is the result of improper maintenance, or to any mower or parts that have
not been assembled or installed as specified in the Owner’s Manual. The
Warranty does not cover any mower that has been altered or modified changing
performance or durability. In addition, the Warranty does not extend to repairs
made necessary by normal wear, or by the use of parts or accessories which, in
the reasonable judgment of WMI, are either incompatible with the WMI mower
or adversely affect its operation, performance or durability.
Wright Manufacturing, Inc. (hereinafter: WMI) warrants to the original owner that
the new WMI mower accompanying this document will be free from
manufacturing defects in materials or workmanship subject to the following
limitations and exclusions. Any part of the WMI commercial mower
manufactured by WMI and found, in the reasonable judgment of WMI, to be
defective in materials or workmanship, will be repaired or replaced by an
Authorized WMI Service Dealer without charge for parts and (except as
excluded below) labor. This Warranty is limited to the original Owner and the
mower this document was provided with and is not transferable. Dealer demo
units with less than fifty hours when first retailed shall also be covered by this
limited warranty. Proofs of Purchase, Authorized Dealer performed Pre-Deliver
Service and the First Eight Hour Service will be required by the Authorized WMI
Service Dealer to substantiate any warranty claims. All WMI warranty work
must be performed by an Authorized WMI Service Dealer and item must be
delivered to the dealer prior to the expiration of the warranty period. This
Warranty is limited to the following specified periods from the date of the original
retail purchase for defects in materials or workmanship and will commence upon
the date of original retail purchase. This warranty shall apply only if the warranty
registration form has been completed and returned to Wright Manufacturing, Inc.
within 30 days from the date of original retail purchase. This warranty includes
only the cost of parts and labor (when applicable). This warranty applies only to
the replacement of defective or otherwise warrantable WMI OEM parts being
replaced with WMI OEM parts.
•
•
•
•
All parts and components (except as noted below) – 2 years
Belts – 90 days
Battery – 90 days
Engine – warranty covered by engine manufacturer and handled
through the respective Authorized engine Dealers
WMI reserves the right to change or improve the design of any mower without
assuming any obligation to modify any mower previously manufactured.
All other implied warranties are limited in duration to the two (2) year warranty
period or ninety (90) days for mowers used for rental purposes. Accordingly,
any such implied warranties including merchantability, fitness for a particular
purpose, or otherwise, are disclaimed in their entirety after the expiration for the
appropriate two (2) year or ninety (90) day warranty period. WMI’s obligation
under this Warranty is strictly limited to the repair or replacement of defective
parts and WMI does not assume, or authorize anyone to assume for them, any
other obligation. Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply.
Exclusions:
Any damage or deterioration due to normal use, wear and tear or exposure
All filters, engine oil, hydraulic oil, tires and tubes
Bent, fractured or broken parts occurring through impact or hard use
Clutch: linings, anti-rotation failure or other failure due to improper
replacement installation
Cost of regular maintenance service, parts or adjustments
Worn bearings (other than spindle bearings; see above)
Worn bushings, cotters, clips, pins and retainers
Grease fittings/zerks
Paint, paint fading, cosmetic imperfections and steel surface imperfections
Fabric, cushion and rubber grip wear or damage
Cutting blades, light bulbs, fuses
Damage due to loose pulleys on shafts
Damage due to loose wheel hubs on tapered hydraulic motor shafts
Fire Damage
WMI assumes no responsibility for incidental, consequential or other damages
including, but not limited to, expense for gasoline, expense of delivering the
mower to an Authorized WMI Service Dealer and expense of returning it to the
Owner, damage by fire, mechanic’s travel time, telephone charges, rental of a
like product during the time warranty repairs are being performed, travel, loss or
damage to personal property, loss of revenue, loss of use of the power
equipment, loss of time or inconvenience. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply.
Abrasion or corrosion wear or damage
Repair Parts Replaced During Original Warranty
This Warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
All Repair parts (excluding wear or otherwise excluded items)
installed during the warranty period are warranted until the end of
the respective original period according to the categories above
except in the case that the respective original warranty period
expires in less than ninety (90) days after the installation of the
part(s). If this happens then the parts are warranted for a total of
ninety (90) days from the time of their installation.
This Warranty applies to all WMI mowers sold in the United States of America
and
Canada.
For the location of the Authorized WMI Service Dealer nearest you or other
information, such as, Parts Lists and Owner’s Manuals visit our website
Rental Use
The above warranty periods are limited to maximum of ninety (90)
days for mowers that are used for rental purposes.
Wright Manufacturing, Inc.
4600-X Wedgewood Blvd.
Frederick, MD 21703
18
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