Page 1
Wheel Horse
52” Mower
for 5xi Tractors
FORM NO. 3319–811
Model No. 78375 – 8900001 & Up
Model No. 78370 – 8900001 & Up
Operator’s Manual
IMPORTANT: Read this manual, and your tractor manual, carefully. They
contain information about your safety and the safety of others. Also
become familiar with the controls and their proper use before you operate
the product.
Page 2
Introduction
We want you to be completely satisfied with your
new product, so feel free to contact your local
Authorized Service Dealer for help with service,
genuine replacement parts, or other information you
may require.
Whenever you contact your Authorized Service
Dealer or the factory, always know the model and
serial numbers of your product. These numbers will
help the Service Dealer or Service Representative
provide exact information about your specific
product. You will find the model and serial number
plate located in a unique place on the product as
shown below.
The warning system in this manual identifies
potential hazards and has special safety messages that
help you and others avoid personal injury, even death.
DANGER, WARNING and CAUTION are signal
words used to identify the level of hazard. However,
regardless of the hazard, be extremely careful.
DANGER signals an extreme hazard that will cause
serious injury or death if the recommended
precautions are not followed.
WARNING signals a hazard that may cause serious
injury or death if the recommended precautions are
not followed.
CAUTION signals a hazard that may cause minor or
moderate injury if the recommended precautions are
not followed.
Two other words are also used to highlight
information. “Important” calls attention to special
mechanical information and “Note” emphasizes
1
general information worthy of special attention.
m–3469
1. Model and Serial Number Plate
For your convenience, write the product model and
serial numbers in the space below.
Model No:
Serial No.
The left and right side of the machine is determined
by sitting on the seat in the normal operator’s
position.
Printed in USA
The TORO Co. – 1997
Page 3
Contents
Safety and Instruction Decals 2. . . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loose Parts 3. . . . . . . . . . . . . . . . . . . . . . . . .
Mower Preparation 3. . . . . . . . . . . . . . . . . . .
Installing the Mower 4. . . . . . . . . . . . . . . . .
Attach the PTO Drive Belt 6. . . . . . . . . . . . .
Adjusting the Mower 8. . . . . . . . . . . . . . . . .
Removing the Mower 11. . . . . . . . . . . . . . . . .
Removing the Recycler Baffle 13. . . . . . . . .
Installing the Recycler Baffle 13. . . . . . . . .
Operation 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Discharge or Mulch Grass 14. . . . . . . . .
Page
Page
Operating the Power Take Off (PTO) 14. . . .
Attachment Lift Lever 15. . . . . . . . . . . . . . . .
Adjusting the Two Front Wheels 16. . . . . . . .
Check for Debris 16. . . . . . . . . . . . . . . . . . . .
Tips for Mowing Grass 17. . . . . . . . . . . . . . .
Maintenance 18. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Interval Chart 18. . . . . . . . . . . . . . . .
Cutting Blade 19. . . . . . . . . . . . . . . . . . . . . . .
Greasing and Lubrication 20. . . . . . . . . . . . . .
Blade Drive Belt 21. . . . . . . . . . . . . . . . . . . . .
Storage 21. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 22. . . . . . . . . . . . . . . . . . . . . . . . .
1
Page 4
Safety
Safety and Instruction Decals
Safety decals and instructions are easily visible to the operator and are located near
any area of potential danger. Replace any decal that is damaged or lost.
ON GRASS DEFLECTOR
(Part No. 93–1122)
NEXT TO FRONT WHEELS
(Part No. 93–7282)
ON HEIGHT–OF–CUT
BRACKET
(Part No. 111655)
(1) ON GRASS DEFLECTOR
(1) ON DECK LEFT SIDE
(Part No. 92–7108)
(2) ON LEVELER BAR
(Part No. 98–3478)
ON MOWER REAR TOP
(Part No. 98–3480)
ON MOWER RIGHT SIDE
(Part No. 98–3481)
UNDER GRASS DEFLECTOR
(Part No. 92–7109)
2
Page 5
Installation
Loose Parts
Note: Use the chart below to identify parts used for assembly.
DESCRIPTION QTY. USE
Grass deflector
Spring
Bolt 3/8–24 x 3–1/2”
Lock nut 3/8”
PTO drive belt 1 Install PTO drive belt
Pulley box 1 Install pulley box
Operator’s Manual 1 Read before operating
1
2
Install grass deflector
2
2
Mower Preparation
Install the Discharge Chute
1. Place the springs into the brackets on the mower
with the hooked ends over the raised back of the
bracket (Fig. 1).
2. Align the grass deflector with the holes in the
brackets and the spring straight ends in the space
under the hinge and above the deflector (Fig. 1).
5
6
1
3
4
2
m–3484
3. Secure the deflector to the bracket with bolts
through the grass deflector, springs and brackets.
Secure with lock nuts (Fig. 1).
4. Lift the grass deflector and check that it is spring
loaded and pivots freely to the full down
position.
IMPORTANT: Grass deflector must be
spring loaded in the down position. Lift the
deflector up to test that it snaps to the full
down position.
1. Bracket
2. Spring hook end
3. Space for spring
Figure 1
4. Grass deflector
5. Bolt
6. Lock nut
3
Page 6
Installation
Installing the Mower
POTENTIAL HAZARD
• Without the grass deflector, mulch baffle,
or complete grass catcher assembly
mounted in place, you and others are
exposed to blade contact and thrown
debris.
WHAT CAN HAPPEN
• Contact with rotating mower blade(s) and
thrown debris will cause injury or death.
HOW TO AVOID THE HAZARD
• NEVER remove the grass deflector from
the mower because the grass deflector
routes material down toward the turf. If
the grass deflector is ever damaged, replace
it immediately. Never put your hands or
feet under the mower.
• Never try to clear the discharge area or
mower blades unless you move the power
take off (PTO) to “OFF” and turn the
ignition key to “STOP.” Also remove the
key and pull the wire off the spark plug(s).
Initial Preparation
The mower is most easily installed when done on a
level concrete surface. Rougher dirt or lawn surfaces
make installation more difficult.
1. Position the tractor and mower side by side, with
the mower on the right–hand side of the tractor.
2. Set the parking brake, raise the attachment lift,
and turn the ignition key to “STOP” to stop the
engine. Remove the key.
3. If you have previously had a snowthrower, blade
or tiller attached to the attachment lift, remove
the two clevis pins on each side of the
attachment lift (Fig. 3).
Mower Belt Routing
1. Route the mower belt as shown in Fig. 2. Be
sure to install the belt on the lower mower deck
pulley.
1
Figure 2
Top View
1. Mower belt 2. Mower deck pulley
2
2
1
m–3433
Figure 3
1. Clevis pin 2. Hairpin cotter
4. Attach the pulley box if it is not already on the
tractor. Make sure the latches on the tractor’s
front Attach–A–Matic are open (Fig. 4). Then
slide the pulley box into the Attach–A–Matic
latches and seat it. Close the latches.
m–3472
4
Page 7
Installation
3
3
1
7
6
22
Figure 4
1. Attach–A–Matic latches
2. Pulley box
3. Idler pulley
4. Belt tension release arm
5. Belt tension adjustment
knob
6. Belt tension indicators
(one on each side)
7. Attach–A–Matic button
Attach the Mower
1. Make sure the mower wheels are set for low
height of cut.
2. Make sure the attachment lift is in the full up
position, then turn the ignition key to “STOP” to
stop the engine, set the parking brake, and
remove the ignition key.
4
m–3463
5
2
1
m–3468
Figure 5
1. Slots in the side mounting
brackets (2)
2. Belt guide
3. Front–to–rear adjustment
rod
5. Start the tractor.
6. Lower the attachment lift arm fully and adjust
the deck’s position until you can pull out on the
J–pin of the lift arm and slide it into the slot in
the mounting bracket of the mower (Fig. 6).
7. On the driver’s left–hand side, pull out the
attachment lift J–pin and slide it into the slot on
the other mower mounting bracket.
1
3. From the driver’s right–hand side of the tractor,
slide the mower under the tractor.
4. After sliding the mower under the tractor,
position it so that the slots in the side of each of
the mower’s mounting brackets (Fig. 5) are
aligned directly below the tractor’s attachment
lift arm.
2
m–3456
Figure 6
Left Side of Tractor Shown
1. J–pin 2. Mower slot in side
mounting bracket.
5
Page 8
Installation
8. After the two J–pins are seated through the
mower’s mounting brackets, using the
attachment lift and your hand on the right front
adjustable mower wheel bracket (Fig. 7),
position the mower so its attachment bar fits into
the mid Attach–A–Matic mount.
POTENTIAL HAZARD
• The “scissor” formed by the mower
mounting brackets and the attachment lift
arm is dangerous.
WHAT CAN HAPPEN
• Hands and fingers can get caught between
the mower parts and the tractor and be
injured.
HOW TO AVOID THE HAZARD
• Keep hands away from moving parts while
operating the attachment lift.
• Always position the mower with your hand
on the right front mower wheel bracket.
• Never try to position the mower with your
hands on the mower mounting brackets or
below the mower housing.
10. Set the parking brake, lower the attachment lift,
and turn the ignition key to “STOP” to stop the
engine. Then remove the key.
2
1
Figure 8
1. Attach–A–Matic button 2. Attach–A–Matic lever
m–3457
Attach the PTO Drive Belt
1. Hang the belt over the mower, then thread it
forward through the belt guide (Fig. 9) on the
mower.
Figure 7
9. Turn the lever of the Attach–A–Matic
clockwise to lock the mower to the tractor (Fig.
8).
m–3500
2
1
Figure 9
1. Belt 2. Belt guide
m–3457
2. Extend the belt through the center of the pulley
box, between the two pulleys.
3. Release the belt tension release arm on the
pulley box housing and swing it out toward you
(Fig. 11).
6
Page 9
Installation
4. Remove the tractor’s grill by pulling it straight
out toward you.
POTENTIAL HAZARD
• Components under the hood will be hot if
the tractor has been running.
WHAT CAN HAPPEN
• Touching hot components can cause burns.
HOW TO AVOID THE HAZARD
• Allow the tractor to cool before performing
maintenance or touching components
under the hood.
5. Position the end of the belt into the grooves of
the PTO pulley (Fig. 10), making sure it is also
under the pulleys in the pulley box.
3
7. Now adjust the belt tension.
A. Push the belt tension release arm back
toward the pulley box to tension the belt.
B. Check the tension indicators on each side of
the pulley box.
C. If the tension indicators are not in the same
position, release the belt tension, turn the
adjustment knob and repeat steps A and B
until the indicators move to the same
position (Fig. 11).
D. Once the indicators are in the same
position, swing the tension release arm into
the pulley box and seat it by moving it into
the position shown in Figure 11.
4
1
2
Figure 10
1. Pulley box pulley
2. Belt tension release arm
3. PTO pulley
4. PTO drive belt
6. Loop the other end of the belt over the drive
pulley of the mower. Additional belt slack can
be obtained (if needed) by turning the belt
tension adjustment knob (Fig. 11).
m–3470
2
3
1. Belt tension release arm
2. Belt tension indicator (2)
3. Belt tension adjustment
knob
1
Figure 11
4. Seating position for
tension arm
m–3458
8. Loosen the belt guide bolt (Fig. 12).
9. Adjust the belt guide so that it just touches the
belt on the inside arm of the guide (toward the
center of the deck) (Fig. 12).
4
7
Page 10
Installation
1
3
2
4
3
1
2
1. Belt guide
2. Belt
4
Figure 12
3. Belt touches here
4. Belt guide bolt
m–3465
10. Tighten the belt guide bolt.
11. Replace the front grill of the tractor.
Adjusting the Mower
Adjusting the Height of Cut
The rear gauge wheels are adjusted in different hole
locations for 1–1/2—4–1/2” (4–11 cm) heights of cut.
1. Start the tractor, apply the parking brake, and
raise the deck. Get off the tractor. Pull the
height–of–cut lever out to disengage it from the
quadrant. Adjust the height of cut to the desired
level. Release the lever inward to lock into the
quadrant (Fig. 13).
m–3474
Figure 13
1. Height-of-cut lever
2. Quadrant
3. High
4. Low
Checking Mower Level
For optimum efficiency, the level of the mower
should be checked at the time of initial installation
and periodically as a check, to ensure that the blades
are 1/8” (3 mm) lower in the front than in the rear.
The mower must be checked and adjusted on a flat
level surface, preferably concrete. Before checking
the mower level, set the air pressure in the front and
rear tires to 12 psi (.85 kPa). Place the mower
height–of–cut lever to the middle cut position. Make
sure the two adjustable front wheels are off the
ground.
1. Disengage the power take off (PTO), set the
parking brake, lower the attachment lift, and turn
the ignition key to “STOP” to stop the engine.
Remove the key.
2. Carefully rotate one of the blades so it is facing
front and rear (Fig. 14).
8
Page 11
Installation
3. Measure the distance from the front tip of the
blade (Fig. 14) to the flat surface. Then
carefully rotate the blade tip until it is in the rear
position. When the blade tip is in the front
position, it should be 1/8” (3 mm) lower than
when it is in the rear position.
Front
1
2
m–3523
3
44
1
m–3468
Figure 15
1. Front–to–rear adjustment
rod
Adjusting Side–to–Side Blade Cut
This optional adjustment is available if necessary to
compensate for uneven side–to–side cut.
Figure 14
1. Blade oriented front to rear
2. Measure front blade tip
3. Rotate front tip to rear and
measure
4. Measure here (side to
side)
4. Front–to–rear adjustment is made by turning the
adjusting nut (Fig. 15) on the back of the mower.
To raise the front of the mower, turn the
adjustment nut clockwise. To lower the front of
the mower, turn the nut counterclockwise.
Equalize side–to–side cut by adjusting the two
carriage bolts (Fig. 16) on the mower. Check height
of blade at outside blade tips as shown (Fig. 14).
1
m–3459
Figure 16
1. Side–to–side adjustment
bolts
9
Page 12
Installation
Adjusting the Deck Slope for Transport
To extend PTO drive belt life and provide adequate
transport height, the deck slope in transport should be
adjusted. Three steps accomplish this: 1) Making
sure the lift arm cams are in the same position, 2)
Measuring blade slope in its front and rear positions
and 3) Making adjustments if the blade slope is not
within specification.
IMPORTANT: Failure to adjust for transport
can result in drive belt failure.
IMPORTANT: Failure to adjust for transport
can result in insufficient transport height.
1. Check to see that both adjustment cams are
oriented with the indicator toward the pivot point
at the rear of the tractor (Fig. 17).
POTENTIAL HAZARD
• The “scissor” formed by the mower
mounting brackets and the attachment lift
arm is dangerous.
WHAT CAN HAPPEN
• Hands and fingers can get caught between
the mower parts and the tractor and be
injured.
HOW TO AVOID THE HAZARD
• Keep hands away from moving parts while
operating the attachment lift.
• Set the parking brake, lower the
attachment lift, turn the ignition key to
“STOP” to stop the engine, and remove the
key before making any adjustments.
3
4
2
1
Right Side of Tractor Shown
1. Indicator
2. Adjustment cam
3. Lift arm
5
6
Figure 17
4. Pivot point
5. Lowers front of deck
6. Raises front of deck
2. If they are not, park the machine on a level
surface, set the parking brake, lower the
attachment lift to take pressure off the cams, and
turn the ignition key to “STOP” to stop the
engine. Remove the key.
m–3518
3. Loosen the nuts on the cams, rotate the cams to
the proper position, then tighten the cam nuts.
4. Start the tractor, raise the attachment lift and turn
the ignition key to “STOP” to stop the engine.
Remove the key.
5. Check the slope of one of the blades (Fig. 14).
A. Measure the distance from the front tip of
the blade to the flat surface.
B. Carefully rotate the blade tip until it is in
the rear position.
C. When the blade tip is in the front position,
it should be approximately 1/4” (7 mm)
lower than when it is in the rear position.
6. If it is not, start the tractor, lower the attachment
lift to take pressure off the cams, and turn the
ignition key to “STOP” to stop the engine.
Remove the key.
7. Loosen the cam nuts and equally rotate the
left–hand and right–hand cams down to raise the
front of the deck, or up to lower the front of the
deck. Tighten the nuts.
10
Page 13
8. Repeat steps 4–7 until the slope of the blade is
approximately 1/4” (7 mm) lower in the front
than it is in the rear.
Removing the Mower
Installation
The mower is most easily removed from the tractor
when done on a level concrete surface. Rougher dirt
or lawn surfaces make removing the mower more
difficult.
1. Put the mower in low height of cut.
2. Set the parking brake, raise the attachment lift,
and turn the ignition key to “STOP” to stop the
engine. Remove the key.
3. Remove the grill.
POTENTIAL HAZARD
• Components under the hood will be hot if
the tractor has been running.
WHAT CAN HAPPEN
• Touching hot components can cause burns.
HOW TO AVOID THE HAZARD
• Allow the tractor to cool before performing
maintenance or touching components
under the hood.
4. Release the belt tension release arm on the
pulley box to release the tension on the drive belt
(Fig. 18).
2
1
Figure 18
1. Belt tension release arm 2. Belt tension adjustment
knob
m–3458
5. Remove the belt from around the PTO pulley
(Fig. 19). Additional belt slack can be obtained
(if needed) by turning the belt tension
adjustment knob.
m–3454
Figure 19
1. PTO pulley
6. Start the tractor.
1
7. Lower the deck until its weight is completely on
its wheels, not on the tractor.
11
Page 14
Installation
8. Make sure the parking brake is set and turn the
ignition key to “STOP” to stop the engine.
Remove the key.
9. Press the button of the mid Attach–A–Matic
and twist the lever counterclockwise to release
the mower (Fig. 20).
2
2
3
2
1
m–3457
Figure 20
1. Mid Attach–A–Matic
button
2. Mid Attach–A–Matic
lever
10. Pull the two spring–loaded J–pins from the deck
lift arms and twist them slightly so that they stay
disengaged (Fig. 21).
1
m–3458
Figure 22
1. Front Attach–A–Matic
button (one on each side)
2. Front Attach–A–Matic
latches
3. Pulley box
12. Start the tractor and raise the attachment lift to
provide ample clearance to slide out the mower.
Then turn the ignition key to “STOP” to stop the
engine. Remove the key.
13. Slide the mower out from the driver’s right–hand
side of the tractor.
1
m–3456
Figure 21
1. J–pin
11. If you wish to remove the pulley box, push the
latch release buttons on the front
Attach–A–Matic (Fig. 22) and raise the latch
levers to open the latches holding the pulley box.
Remove the pulley box.
12
Page 15
Installation
Removing the Recycler Baffle
1. Remove lock nuts from top, discharge side and
center flange of right side baffle (Fig. 23). Lower
baffle and slide out discharge opening to remove.
Note: Only the right side baffle need be
removed for side discharge mowing.
2. Install previously removed 5/16–5/8” (16 mm)
bolts and 5/16” lock nuts in open holes of
mower for safety (Fig. 23).
1
Installing the Recycler Baffle
1. Thoroughly clean the mower.
2. Remove lock nuts from top and discharge side
and center flange of mower (Fig. 24). Slide
baffle into discharge opening and raise into
mower so pin on center flange engages left
baffle.
3. Secure with previously removed 5/16–5/8”
(16 mm) bolts and 5/16” lock nuts in top,
discharge side and center flange holes of baffle
(Fig. 24).
Figure 23
1. Baffle right side
2. Bolt 5/16 x 5/8” (16 mm)
3. Lock nut 5/16”
POTENTIAL HAZARD
• Open holes in the mower expose you and
others to thrown debris.
WHAT CAN HAPPEN
• Debris thrown out of holes in the mower
can cause injury.
HOW TO AVOID THE HAZARD
• Never operate mower without hardware
mounted in all holes in mower.
• Install hardware in mounting holes when
recycle baffle is removed.
2
3
m-3510
1. Baffle right side
2. Flange pin
Figure 24
3. Bolt 5/16 x 5/8” (16 mm)
4. Lock nut 5/16”
2
1
4
3
m-3510
13
Page 16
Operation
Side Discharge or Mulch Grass
POTENTIAL HAZARD
• Without the grass deflector, mulch baffle,
or complete grass catcher assembly
mounted in place, you and others are
exposed to blade contact and thrown
debris.
WHAT CAN HAPPEN
• Contact with rotating mower blade(s) and
thrown debris will cause injury or death.
HOW TO AVOID THE HAZARD
• NEVER remove the grass deflector from
the mower because the grass deflector
routes material down toward the turf. If the
grass deflector is ever damaged, replace it
immediately.
• Never put your hands or feet under the
mower.
• Never try to clear the discharge area or
mower blades unless you move the power
take off (PTO) to “OFF” and rotate the
ignition key to “STOP.” Also remove the
key and pull the wire off the spark plug(s).
While the ignition key is in RUN or LIGHTS
position and the power take off (PTO) is engaged, the
PTO indicator light will be on. When this light is ON,
it is a reminder: the implement is being powered and
the starter will not crank while the PTO is engaged.
Always turn off the PTO before getting off the seat.
Engaging the Power Take Off (PTO)
1. Depress the brake pedal to stop the machine.
2. Move the throttle lever to FAST.
IMPORTANT: For best performance, always
use full throttle when the power take off
(PTO) switch is ON.
3. Pull the power take off (PTO) switch to ON (Fig.
25).
1
2
1. The mower has a hinged grass deflector that
disperses clippings to the side and down toward
the turf.
2. To mulch grass clippings you must install the
Recycler baffles (optional on some models)
into the mower; refer to Installing the Recycler
Baffle, page 13.
Operating the Power Take Off
(PTO)
The power take off (PTO) engages and disengages
power to the electric clutch.
14
m–3264
Figure 25
1. Push (off-disengaged) 2. Pull (on-engaged)
Disengaging the Power Take Off (PTO)
1. Push the power take off (PTO) switch to OFF.
Page 17
Attachment Lift Lever
The attachment lift lever (Fig. 26 & 27) is used to
raise and lower various attachments.
Raising Attachments
1. Start the tractor.
2. Pull the attachment lift lever upward until the
latch locks. In this position, the lift will hold the
attachment in the up, or raised position.
POTENTIAL HAZARD
• When the engine is off, attachments in the
raised position can gradually lower.
Operation
1
m–3258
Figure 26
1. Attachment lift lever
1
WHAT CAN HAPPEN
• Someone nearby may be pinned or injured
by the attachment as it lowers.
HOW TO AVOID THE HAZARD
• Always lower the attachment lift each time
you shut off the tractor.
Lowering Attachments
1. Start the tractor.
2. Push the attachment lift lever downward to
lower the attachment.
2
m–3315
Figure 27
1. Raise attachment 2. Lower attachment
15
Page 18
Operation
Adjusting the Two Front
Wheels
The two front adjustable wheels must be adjusted in
the proper hole location for each time you change
deck height-of-cut position.
1. After selecting height of cut, make sure the front
adjustable wheels are 3/8” off the ground.
2. To adjust wheel height off the ground, remove
the hairpin cotter and pin to change hole location
(Fig. 28).
3. Select a hole position so the wheel is 3/8” (9.5
mm) off the ground for the height-of-cut position
to be used (Fig. 28).
4. Insert the pin and secure it with a hairpin cotter.
5. Repeat this adjustment on the other wheel.
Check for Debris
Each time you use the mower, be sure to check for
debris build up on and inside the rear transaxle cover
(Fig. 29). Remove any build up.
1
m–3436
Figure 29
1. Rear transaxle cover
3
1. Wheel
2. Pin
2
1
1233
Figure 28
3. Hair pin Cotter
16
Page 19
Operation
Tips for Mowing Grass
Fast Throttle Setting
For best mowing and maximum air circulation,
operate the engine at “FAST.” Air is required to
thoroughly cut grass clippings, so do not set the
height-of-cut so low, as to totally surround the mower
by uncut grass. Always try to have one side of the
mower free from uncut grass, which allows air to be
drawn into the mower.
Cutting a Lawn for the First Time
Cut grass slightly longer than normal to ensure the
cutting height of the mower does not scalp any
uneven ground. However, the cutting height used in
the past is generally the best one to use. When cutting
grass longer than six inches tall, you may want to cut
the lawn twice to assure an acceptable quality-of-cut.
Cut 1/3 of the Grass Blade
It is best to cut only about 1/3 of the grass blade.
Cutting more than that is not recommended, unless
grass is sparse or it is late fall when grass grows more
slowly.
Mowing Direction
Ground Speed
To improve cut quality, use slower ground speed.
Avoid Cutting Too Low
If the cutting width of the mower is wider than the
mower you previously used, raise the cutting height
to ensure uneven turf is not cut too short.
Long Grass
If the grass is ever allowed to grow slightly longer
than normal, or if it contains a high degree of
moisture, raise the cutting height higher than usual
and cut the grass at this setting. Then cut the grass
again using the lower, normal setting.
When Stopping
If the machine’s forward motion must be stopped
while mowing, a clump of grass clippings may drop
onto your lawn. To avoid this:
1. With the blade(s) “ENGAGED,” move onto a
previously cut area.
2. To disperse the clippings evenly, raise the mower
while driving forward with the blade(s)
“ENGAGED.”
Alternate mowing direction to keep the grass standing
straight. This also helps disperse clippings which
enhances decomposition and fertilization.
Mow at Correct Intervals
Normally, mow every 4 days. But remember, grass
grows at different rates at different times. So to
maintain the same cutting height, which is a good
practice, mow more often in early spring. As the
grass growth rate slows in mid summer, mow less
frequently. If you cannot mow for an extended period,
first mow at a high cutting height; then mow again 2
days later at a lower height setting.
Keep the Underside of the Mower Clean
Clean clippings and dirt from the underside of the
mower after each use. If grass and dirt build up inside
the mower, cutting quality will eventually become
unsatisfactory.
Blade Maintenance
Maintain a sharp blade throughout the cutting season
because a sharp blade cuts cleanly without tearing or
shredding the grass blades. Tearing and shredding
turns grass brown at the edges, which slows growth
and increases the chance of disease. Every 30 days,
check the cutter blade(s) for sharpness and file down
any nicks.
17
Page 20
Maintenance
Service Interval Chart
Each
Service Operation
Cutter Blade—check X X X
Mower Spindles—grease X X
Belts—check for wear/cracks X
Mower Housing—clean X X X
Belt Tension—check initial X X
Chipped Surfaces—paint X
POTENTIAL HAZARD
Use5Hours25Hours50Hours
Storage
Service
• If you leave the key in the ignition switch, someone could start the engine.
WHAT CAN HAPPEN
• Accidental starting of the engine could seriously injure you or other bystanders.
HOW TO AVOID THE HAZARD
• Remove the key from the ignition switch and pull the wire off the spark plug before
you do any maintenance. Also push the wire aside so it does not accidentally contact
the spark plug.
Spring
Service
18
Page 21
Cutting Blade
To assure a superior quality of cut, keep the blade(s)
sharp. For convenient sharpening and replacement,
you may want to have an extra blade(s).
Maintenance
2
1
3
POTENTIAL HAZARD
• A blade that is worn or damaged could
break apart and pieces could be thrown at
bystanders or at you as you use the mower.
WHAT CAN HAPPEN
• Pieces of blade that may be thrown could
seriously injure or kill you or bystanders.
HOW TO AVOID THE HAZARD
• Periodically inspect the blade for wear and
damage. Immediately install a new blade if
it is worn or damaged.
Inspecting the Blade(s)
1. Remove the mower; refer to Removing the
Mower, page 11.
2. Inspect the cutting edges (Fig. 30). If the edges
are not sharp or have nicks, remove the blade(s)
and sharpen them; refer to Sharpening the
Blade(s), page 20.
3. Inspect the blade(s), especially the curved area
(Fig. 30). If you notice any damage, wear, or a
slot forming in this area (Fig. 30), immediately
install a new blade.
151
Figure 30
1. Cutting edge
2. Curved area
3. Wear/slot forming
Removing the Blade
1. Remove the mower; refer to Removing the
Mower, page 11.
2. Carefully tip the mower over.
3. Hold the blade end using a rag or thickly padded
glove. Remove the bolt, stiffener, and blade
(Fig. 31). A block of wood may be wedged
between the blade and the mower to lock the
blade when you are removing the bolt.
4. Inspect all parts. If a defect or damage is noticed,
install new parts.
4
3
1. Nut
2. Stiffener
2
1
Figure 31
3. Blade
4. Spindle
m–3516
19
Page 22
Maintenance
Sharpening the Blade(s)
1. Use a file to sharpen the cutting edge at both
ends of the blade (Fig. 32). Maintain the original
angle. The blade retains its balance if the same
amount of material is removed from both cutting
edges.
1
Figure 32
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer (Fig. 33). If the blade stays in a
horizontal position, the blade is balanced and can
be used. If the blade is not balanced, file some
metal off the back side of the blade. Repeat this
procedure until the blade is balanced.
2
1
Figure 33
1. Blade 2. Balancer
2. Tighten the blade nut to 80-100 ft–lb
(109-136 Nm).
5
3
m–3516
1. Nut
2. Stiffener
3. Blade
4
2
1
Figure 34
4. Spindle
5. Sail
Greasing and Lubrication
Service Interval/Specification
Grease the mower after every 25 operating hours or
once a year, whichever occurs first. Grease more
frequently when operating conditions are extremely
dusty or sandy.
Grease Type: General-purpose grease.
How to Grease
Installing the Blade(s)
1. Hold the blade end using a rag or thickly padded
glove. Install the blade, stiffener, and the blade
bolt (Fig. 31).
IMPORTANT: The sail (curved part of the
blade) must be pointing up toward the inside
of the mower to assure proper cutting.
20
1. Disengage the power take off (PTO), set the
parking brake, lower the attachment lift, and turn
the ignition key to “STOP” to stop the engine.
Remove the key.
2. Clean the grease fittings with a rag. Make sure to
scrape any paint off the end of the fitting(s).
3. Connect a grease gun to the fitting. Pump grease
into the fittings.
4. Wipe up any excess grease.
Page 23
Maintenance
Where to Add Grease
1. Lubricate the blade spindles (Fig. 35).
M–2829
Figure 35
Blade Drive Belt
Removing the Blade Drive Belt
1. Remove the mower; refer to Removing the
Mower, page 11.
2. Remove the pulley cover mounting screws and
pulley covers from the blade pulleys (Fig. 36).
3. Release the spring (Fig. 36).
4. Remove the belt from the pulleys (Fig. 36).
Installing the Blade Drive Belt
1. Install the new belt around the blade pulleys and
the idler pulleys.
2. Attach the spring (Fig. 36).
3. Install the left and right pulley covers with the
mounting screws (Fig. 36).
4. Install the mower; refer to Installing the Mower,
page 4.
2
1
1. Pulley cover screw
2. Pulley cover
3. Belt Guides
5
Figure 36
Top View
4. Mower belt
5. Spring
3
4
2
m–3472
Storage
1. Clean dirt and chaff from the top of the mower.
2. Scrape heavy buildup of grass and dirt from the
underside of the mower. Then wash the mower
with a garden hose. Run the tractor for two to
three minutes.
3. Check the condition of the blade(s); refer to
Cutting Blade, page 19.
4. Check the condition of the blade drive belt.
5. Check and tighten all bolts, nuts, and screws.
Repair or replace any part that is damaged or
defective.
6. Paint all scratched or bare metal surfaces. Paint
is available from you Authorized Service Dealer.
7. Store the machine in a clean, dry garage or
storage area. Remove the key from the ignition
switch and keep it in a memorable place. Cover
the machine to protect it and keep it clean.
21
Page 24
Troubleshooting
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
Abnormal vibration.
Blade(s) does not rotate.
Uneven cutting height.
1. Cutting blade(s) is bent or
unbalanced.
2. Blade mounting bolt is loose. 2. Tighten blade mounting bolt.
3. Engine mounting bolts are
loose.
4. Loose engine pulley, idler
pulley, or blade pulley.
5. Engine pulley is damaged. 5. Contact Authorized Service
1. Blade drive belt is worn, loose
or broken.
2. Blade drive belt is off pulley. 2. Install blade drive belt and
3. PTO belt is worn, loose or
broken.
1. Tire pressure is incorrect. 1. Set tire pressure.
2. Mower is not level. 2. Level mower from
3. Underside of mower is dirty. 3. Clean the underside of the
1. Install new cutting blade(s).
3. Tighten engine mounting
bolts.
4. Tighten the appropriate
pulley.
Dealer.
1. Install new blade drive belt.
check idler pulley and belt
guides for correct position.
3. Install new PTO belt.
side-to-side and front-to-rear.
mower.
Insufficient transport height. 1. Lift arm cams are improperly
adjusted.
PTO belt comes off of pulleys.
22
1. Belt tension is incorrect. 1. Adjust belt tension.
2. Blade slope is incorrect. 2. Adjust blade slope.
3. Blade slope in transport is
incorrect.
4. Belt is worn or damaged. 4. Install new belt.
5. Pulley is damaged. 5. Contact Authorized Service
1. Adjust lift arm cams.
3. Adjust blade slope in
transport.
Dealer.
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