SPORT
Commercial Mower Owner’s Manual
For Sentar Sport serial #26077 and higher until superseded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 03/2006
Additional replacement owner’s manuals as well as illustrated parts lists are available from your
to date 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.
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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 ...................................................................................................... 8
HOW TO DRIVE THE MOWER....................................................................................................... 8
HOW TO STOP AND PARK THE MOWER ....................................................................................... 9
DRIVING THE MOWER OVER A CURB .......................................................................................... 9
MOWING ON VARYING TERRAIN ................................................................................................. 9
HOW TO ADJUST NEUTRAL........................................................................................................ 9
HOW TO PERFORM THE TRACKING ADJUSTMENT....................................................................... 10
HOW TO TEST/USE THE BLADE CLUTCH/BRAKE SWITCH............................................................ 11
SERVICE AND ADJUSTMENTS ................................................................................................... 11
Height-of-Cut.................................................................................................................... 11
Battery Service................................................................................................................. 12
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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 Sentar Sport is shipped completely 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.
• 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.
• 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. Set the tire pressure in the front caster tires between 30
and 40 psi. Higher pressures will help keep the caster tires on their rims when impacted from the
side but give a stiffer ride. Some Front Casters are equipped with non-pneumatic tires and do not
required any air.
• 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 start the mower properly.
• Remove the blade belt covers and inspect the belt and idler arm for smooth operation. Also grease the
idler arm(s) if applicable.
• 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.
• Lubricate all moving parts (see Maintenance Items section of this manual).
• Fill fuel tank with regular unleaded gasoline. Turn fuel valve under fuel tank to the “ON” position.
• 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. (Do not
support the mower’s weight on any part of the foot platform.) You must be able to stand on the
mower. 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 middle or neutral position, apply the parking brake.
• Open the manual bypass valves on side of each pump a half-a-turn counterclockwise.
• Reattach spark plug wires to spark plugs.
• 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. While seated or
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standing on the foot platform, release the parking brake. Now gradually close the manual bypass
valves on top 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.
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.
• 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. The parking brake should now be applied. Move the engine throttle control to ¾ speed
setting.
• Place your 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 short amount of time, service the blade brake system. With the blades
on, now try lifting your feet off the foot platform to test the Operator Presence Control switch (OPC).
The engine should die and the blades should 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. It is recommended that the slower setting of the
Speed/Sensitivity Adjustment be used. (See further in this manual for information on
Speed/Sensitivity Adjustment.) Be sure that the mower drives in a straight line when both hand
controls are held to the full speed position which is up against the stationary control bar. 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 his part 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. Then give the
customer his copy of the registration form and then keep your copy and mail the remaining copies
of the form 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
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SAFETY INSTRUCTIONS
WRIGHT MOWER USERS & OWNERS: READ THIS MANUAL BEFORE USING
PLEASE BE CAREFUL!
WARNING
CAUTION
This symbol with the word “WARNING”
indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
This symbol with the word “CAUTION”
indicates a potentially hazardous situation
which, if not avoided, could result in minor
or moderate 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 assembly, installation, 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 Sentar Sport 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 instrument panel warning
The blade switch must be “off” before starting
the engine
Your feet must be on the foot platform in order
to engage the blades
If you remove your feet from the foot platform
while the blades are running the engine will
stop and the blades will brake in seconds
Letting go of the hand controls will stop the
wheels instantly
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
mentioned above.
•
•
Spring loaded chute deflector helps reduce
trajectory of thrown objects
•
•
Belt/pulley covers on cutter deck
Anti-tip rollers provided at the rear of the
mower reduce the risk of mower tipping
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WARNING
WARNING
User Clothing
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
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
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.
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 foot-
operated Operator Presence Control (OPC)
switch is released. (To test the OPC, follow
of this manual.) Inspect the two anti-tip rollers
and their respective bolts at the rear of the mower
for tightness and proper operation. 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 operation and compromise operator
safety.
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
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
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stop the mower. This could throw you off the
mower or into and possibly over the handle bars
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
around. When the Wright mower is in use, never
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 or being run over if you lose
control. Never operate the mower in an enclosed
area without good, approved ventilation. Exhaust
fumes are dangerous.
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).
• All operators of this mower should exercise
caution when driving this mower at high
speeds. Sudden acceleration or
deceleration may cause serious injury.
• 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.
• 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
instrument panel of the mower.
• Keep a firm hold on the stationary handle at all
times.
• 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 position, 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.
• 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
• 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.
WARNING
Operation In Forward Direction
Always keep a firm grip on the mower stationary
handlebar with both hands. Operate the mower
slowly until you become familiar with how the
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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.
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.
Heavier operators may consider obtaining the
optional weight bar, which is designed to add
weight to the front of the machine.
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
Always keep a firm grip on the mower stationary
handlebar with both hands. Keep both feet firmly
on the foot platform. 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 on the
ground near the back edge of the mower to
prevent serious personal injury if the mower were
to run over you.
Recommendations for this angle:
• Lean as far forward as possible and stand if
necessary to add 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
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. 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.
Recommendations for this angle:
• Stretch your arms out straight while holding onto
the stationary handlebar and 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
Operation on Slopes
DO NOT operate on steep slopes. Do not
operate the mower on slopes steeper than you
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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.
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.
WARNING
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. If your mower is
Hydraulic Safety
Keep body and hands away from pin holes or
fittings that eject hydraulic fluid under high
pressure. Use paper or cardboard and not hands
to search for leaks. 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.
equipped with the optional weight bar on the
front, the mower may not handle as well
crossing slopes as without the weight bar on
the front. Weight on the front of the mower
reduces the traction of the rear drive wheels
and can cause the mower to slide or nose
dive down hill. Use of the optional weight
bar is determined by the width of cut of the
mower and the operator’s weight. For 36”
cut mowers, operators over 175 pounds may
prefer the optional weight kit. For 52” cut
mowers, operators over 225 may prefer the
optional weight kit. 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
WARNING
depending on mowing environment,
operator driving style and preference.
• To reduce the chances of “popping-a-wheelie”,
do not accelerate quickly.
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.
Replacement Parts
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.
REMEMBER – YOUR MOWER CAN BE ONLY
AS SAFE AS THE OPERATOR.
FAILURE TO FOLLOW SAFE OPERATING
PRACTICES MAY RESULT IN
WARNING
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.
SERIOUS INJURY OR DEATH.
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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
• Turn OFF the blade engaging switch if it is
on.
• Turn fuel valve to the “ON” position.
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 foot-operated Operator Presence Control
(OPC) switch is released. To test the OPC,
follow the instructions given later in this manual.
Inspect the two anti-tip rollers and their
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, pull out on the choke control
knob and 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, push in 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.
respective bolts at the rear of the mower for
tightness and proper operation. Ensure that all
parts of the Quad-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.
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 or standing, 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 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. With both feet still firmly placed on the
foot platform, increase the engine speed to
How to start the mower
Before starting the engine
• Make sure the control levers are in the
exact neutral position
• Apply the parking brake if it is not already
set.
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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.
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
How to Stop and Park the Mower
Come to a complete stop. If the blades are on,
turn them off using the switch on the instrument
panel. Make sure the control levers are in the
exact neutral 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.
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
manual, especially the parts on:
Driving the Mower Over a Curb
To climb a curb, first see the Safety Instructions
section of this manual, especially the parts on:
How to Adjust Neutral
Next, raise the mower deck into the highest
position. 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 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 he
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
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. To make the
adjustment, loosen the ¼” Allen bolt and rotate
the RTN device on the pump corresponding to
the wheel that needs adjustment. 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.
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increase the speed of the forward movement of
the mower on that side.
Changing the Speed/Sensitivity
Adjustment
The controls are initially set with the Speed/
Sensitivity
In the “faster” Speed/Sensitivity setting (this is
the factory setting) neither rod should be
lengthened so much that at full speed it pulls the
pump control lever (on the sides of the pumps)
against the internal pump stop. Therefore, to
reach the maximum capable speed, the rods
should be lengthened one turn at a time until
you can feel, in the hand control, that the
internal pump stop has been contacted. Then
shorten the rod one turn (damage to the hydro
pump will occur if the controls are adjusted in a
way that put direct pressure on the internal
pump stop). You will feel the slight resistance.
There is no need to start the engine while
checking this incrementally. Remember, this
procedure does not apply if the Speed/
Sensitivity Adjustment is in the slower setting.
Otherwise you will wind the swivels way up the
rods and the mower will go faster but will lose
most or all of its reverse capability and then the
gap between the handlebar and the control
levers becomes excessive when at the neutral
position.
Adjustment in the
faster, more
sensitive position. If
an operator is not
completely familiar
with the mower
operation the
operator may desire
to decrease
the ground speed. The slower setting has a
corresponding decrease in the sensitivity of the
controls. In other words, a given amount of
movement of the control levers will cause about
a 25-30% change in the ground speed making
the controls less sensitive. After stopping the
engine, the adjustment is made by removing the
bolts that hold the control rods onto the control
lever from the current holes in the control levers
and reinstalling them and the rods into the
alternate holes. The top holes closest to the
control handles are for the faster, more sensitive
setting and the bottom holes, farthest from the
control handles, are the slower, less sensitive
setting. BE SURE THE BOLTS IN THE
CONTROL RODS ARE SECURELY IN PLACE
EACH TIME YOU REMOVE THEM. You must
then perform the Tracking Adjustment described
below.
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. So, 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.
How to Perform the Tracking
Adjustment
First ensure that the tire pressure is equal on
both rear drive tires (18-22 psi) and also the
front caster tires (30-40 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. Turning the
control rod clockwise will shorten the control rod
and slow the forward movement of the mower
on that side. Turning the control rod counter-
clockwise will lengthen the control rod and
The only reference point to limit the adjustment
from becoming extremely off is the relative
position of the pump stop and the handlebar in
the faster Speed/Sensitivity setting. Therefore, if
everything is way off either because you are
installing new parts (or other reasons) you
should only use the faster Speed/ Sensitivity
setting to get the tracking accurate and then
change to the slower speed range and adjust
the tracking only one or two turns on either side.
After getting the mower to track straight, readjust
the neutral adjustment on the pump by using a
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¼” allen wrench at the Return-to-Neutral (RTN)
mechanism, if necessary. It is normal to make
these adjustments from time to time.
caster tires between 30 and 40 psi. Higher
pressures will help keep the caster tires on their
rims when impacted from the side but give a
harder ride. They do not have any tread but
should be replaced when excessively worn.
How to Test/Use the Blade
Clutch/Brake Switch
Height-of-Cut
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. Place 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.
Before adjusting the height-of-cut be sure the
mower engine is off, and all four tires have
proper air pressure. Check for even tire wear.
The height-of-cut can be adjusted the following
way:
• While holding the deck lift lever grip to the left
of the upright, push down (with thumb or other
hand) on the button at the top of the deck lift
lever. With the button pushed down, pull back
slightly and then move the deck lift lever
forward to lower the deck or pull back to raise
the deck. When the deck is at the desired
height, release the button and make sure the
internal stop block is fully locked into place.
There is also a détente pin that can be used to
insure the deck is not lowered to a cutting
height that is lower than the lowest desired
cutting height.
Belt Tension Adjustment
The pump drive belt is self-adjusting, and
requires no adjustment, just replacement. The
blade drive belt is self-adjusting also and
requires no adjustment, just replacement.
How to Test the Operator Presence
Control (OPC) Switch
With the parking brakes applied and the blades
ON, try lifting your feet off the foot platform to
test the Operator Presence Control switch
(OPC). The engine should kill and the blades
should stop within a few seconds. If not, service
the OPC system or contact your local Wright
dealer.
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
WARNING
Service and Adjustments
Tire Maintenance and Pressure
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
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. Keep the tire pressure in the front
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oil fill tube. Use fully synthetic oil: Mobil1 15W-
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.
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.
Battery Service
The battery is 12 volts and is a maintenance free
battery. Charge the battery only if it will not start
the mower properly. Remove the battery from
the mower before charging. Follow the
instructions of the battery charger for proper and
safe charging of the battery.
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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
X
X
X
X
Grease caster wheel bearings
X
X
Check tire pressure; Rear tires 18-22 psi-Front tires 30-40 psi. Some Front Casters
are equipped with non-pneumatic tires and do not require any air.
Check and clean engine cooling fins
Lubricate foot platform Operator Presence Control pivots and control rod with
waterproof grease
Replace fuel filter
Lubricate choke control cable (if equipped) with WD-40
Check engine oil and add as needed
X
X
Engine *1
Engine *1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Engine *1
Engine *1
Engine *1
Engine *1
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)
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
Engine *1
X
X
X
Adjust parking brake shoes to firmly stop wheels when engaged
Clean air cleaner paper element
X
Engine *1
Engine *1
Engine *1
Engine *1
Engine *1
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
system (replace worn parts)
X
X
X
X
X
X
X
Inspect and replace (if necessary) worn main cutter deck idler pulleys or pulley
bearings (if applicable)
X
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 and lap 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*
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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
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4600X Wedgewood Blvd
Frederick, MD 21703
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