Snapper 1690769 User manual

OPERATOR’S
MANUAL
48" ROTARY
MOWER
48 " ROTARY MOWER
FOR DIESEL TRACTORS
MFG. NO. 1690769
FORM - 1671064
PRINTED IN U.S.A.
839

Table of Contents
SAFETY RULES . 2
DECALS . 3
MOWER SETUP, HITCHING & UNHITCHING . 3
SETUP INSTRUCTIONS . 4
HITCHING THE MOWER . 7
UNHITCHING THE MOWER . .. ’ . . 8
OPERATION . 9
CONTROLS . g
GENERAL INSTRUCTIONS .9
CHECKS BEFORE STARTING . 9
STOPPING THE MOWER . ” 9
STARTING THE MOWER . ' 10
CUTTING HEIGHT . 1 0
MOWING PATTERNS . 10
ENGINE SPEED .n
OPERATION ON SLOPES . .
NORMAL CARE . 1 2
NORMAL CARE INSTRUCTIONS . 1 2
STORAGE .-12
TROUBLESHOOTING . 1 4
CONTENT OF SECTION . 1 4
TROUBLESHOOTING PROCEDURES . 14
BELT REPLACEMENT . 1 5
ADJUSTMENTS . 16
DRIVE BELT TENSION . 1 6
MOWER LEVELING PROCEDURE . 16
FRONT PTO CLUTCH ADJUSTMENT . 1 7
MOWER ASSEMBLY . 1 8
IDENTIFICATION . 1 9
STANDARD FASTENER IDENTIFICATION CHART. 2 0

Safety Rules
A Read these safety rules and follow them closely. Failure to obey
these rules could result in loss of control of vehicle, severe
personal injury to yourself or bystanders, or damage to property
or equipment. The triangle ^ in the text signifies important cautions or
warnings which must be followed.
ALL WARNING, CAUTION, and instructional
messages on your mower should be carefully
read and obeyed. Personal bodily injury can
result when these instructions are not fol¬
lowed.
GENERAL
• Read the Operating and Service Instructions
carefully. Be thoroughly familiar with the controls
and the proper use of the equipment.
• Never allow children to operate the machine. Do
not allow adults to operate it without proper
instruction.
• Do not carry passengers.
• Use only attachments or accessories designed
for your machine. See your dealer for a complete
list of recommended attachmentsoraccessories.
• Keep the area of operation clear of all persons,
particularly small children and pets.
• When using any attachments, never direct dis¬
charge of material toward bystanders or allow
anyone near the vehicle while in operation.
• Make sure:
a. tractor and attachments are in good operating
condition,
b. all safety devices and shields are in place and
in good working condition, and
c. all adjustments (cutting height, etc.) have been
made.
PREPARATION
• Handle fuel with care - it is highly flammable.
a. Use approved fuel container.
b. Never remove the cap of the fuel tank or add
fuel to a running or hot engine, or fill the fuel
tank indoors. Wipe up spilled fuel.
• Do not runtheengineindoors. Exhaust fumes are
deadly.
• Clear the work area of objects which might be
picked up and thrown.
• Disengage all attachment clutches and shift into
neutral before attempting to start the engine.
• Wear heavy footwear. Do not operate tractor
when barefoot or when wearing open sandals or
canvas shoes.
OPERATION
• Disengage power to attachment(s) and stop the
engine before leaving the operator’s position.
• Disengage power to attachment(s) and stop the
engine before making any repairs or adjustments.
• Stop engine to unclog chute.
• Stay alert for holes in terrain and other hidden
hazards. Be extra careful with operating on wet or
slippery surfaces.
• The vehicle and attachments should be stopped
and inspected for damage after striking a foreign
object, and the damage should be repaired before
restarting and operating the equipment.
• Disengage power to attachment(s) when trans¬
porting or not in use.
• When mowing, proceed as follows.
a. Mow only in daylight or in good artificial light.
b. Never operate the tractor without the mower
clutch safety interlock switch properly attach¬
ed and working.
c. Check the blade mounting bolts for proper
tightness at frequent intervals.
• Do not stop or start suddenly when going uphill
or downhill. Mow up and down the face of slopes;
never across the face.

Safety Rules
• Reduce speed on slopes and in sharp turns to
prevent tipping or loss of control. Use extreme
caution when changing direction on slopes.
• Be especially careful not to touch tractor or
attachment parts which might be hot from opera¬
tion. Allow such parts to cool before attempting
to maintain, adjust, or service.
• Watch out for traffic when crossing or near
roadways.
• If equipment begins to vibrate abnormally, dis¬
engage power to attachments and stop engine at
once. Inspect for damage and correct before
starting again.
• Use care when pulling loads or using heavy
equipment.
a. Use only drawbar hitch point.
b. Limit loads to those you can safely control.
c. Do not turn sharply. Use care when backing.
d. Use counterweight(s) or wheel weights when
suggested in the Operator’s Manual.
ALL WARNING, CAUTION and instructional mes¬
sages on your tractor and mower should be care¬
fully read and obeyed. Personal bodily injury can
result when these instructions are not followed. The
information is for your safety, and it is important.
The following are on your rotary mower.
A DANGER
1. Stand clear of
discharge opening.
2. Do not operate
mower without dis¬
charge deflector or
entire grass collector
system properly
installed. _
LOCATION: Near Discharge
Opening
• Take all possible precautions when leaving the
vehicle unattended, such as disengaging the
power take-off, lowering the attachment(s), shift¬
ing into neutral, setting the parking brake, stop¬
ping the engine, and removing the key.
MAINTENANCE AND STORAGE
• Keep all nuts, bolts, and screws tight to be sure
the equipment is in safe working condition.
• Do not change the engine governor settings or
overspeed engine.
• To reduce fire hazard, keep the engine free of
grass, leaves, or excessive grease.
• Never store the equipment with fuel 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.
A DANGER
keep hands & feet
from under mower
LOCATION: Right-Hand Top
of Mower Deck
( IMPORTANT ^
For proper operation
adjust to maintain /
top of arm in green Jjjt
zone jiff
No. 1664808 - Located on the
PTO idler pulley support bracket
as shown in figure 10.
2

ASSEMBLY Mower Setup, Hitching &
Unhitching
ATTENTION SETUP PERSONNEL:
As setup personnel you have an obligation to know the
product better than the customer. This includes safety
related items. Prior to actual setup, thoroughly fami¬
liarize yourself with the Operator’s Manual. Pay
special attention to all safety warnings, it is possible
during setup to place yourself in a position which is
more hazardous than when the unit is in operation.
Remember, it is your responsibility to set up the
product safely and to know it well enough to be able to
instruct a customer in the safe use of his power unit.
Safety is a matter of common sense ... A matter of
thinking before acting. Most shops have specific safety
practices. Follow them. The precautions listed in the
Operator’s Manual should not supersede existing
practices but should be considered as supplemental
information.
^WARNING
Before leaving the operator’s seat for any reason, make
sure the front clutch switch is OFF, the engine is
stopped, ignition key is removed and parking brake is
set.
Place the mower deck on a flat working surface and open
the parts bag. Arrange all hardware according to size and
type, and proceed as follows. (See Fastener ID Chart at
back of manual). After assembly, recheck the mower with
figure 26 to be sure mower is attached correctly.
1. Remove the two carriage bolts (E, figure 26) with
their hardware from the mower deck.
2. Loosen, but do not remove, the hex nut holding the
large flat washer (F).
3. Install the shield (D) as shown, making sure the
notch in the shield is seated behind the large washer
(F).
4. Install the two carriage bolts (E) from underneath
up through the mower deck and deflector. To align
holes, it may help to loosen nut (BB). Then install a
large washer, a lockwasher, and a hex nut (A, B and
C) on each carriage bolt and tighten all hardware in
place. Be sure to also retighten the hex nut at the
third large washer (F). Tighten nut (CC), if
loosened.
5. When the mower is shipped from the factory, the
hitch is installed backwards on the mower for
shipping purposes. Remove the hitch by removing
capscrews, attaching hardware, pins and clips.
Insert spacers (H) in middle holes at each side of
hitch and install between mower bracket (I) posts as
Figure 26. 48" Mower Assembly

Mower Setup, Hitching & Unhitching
shown so the spacers align with the bracket holes.
Install capscrew (G) with lockwasher (K) at each
side through bracket (I) and spacer (H) in the hitch.
Tighten each capscrew with nut (L).
6. On each side, insert a pin (N) thru yoke (J) and
hitch. Insert cotter pins (O) thru the pins and bend
the legs fully.
7. The handle assemblies are assembled in a skin pack.
Remove the assemblies from the skin pack and
apply grease to the handle (Q) threads. Install both
handle assemblies as follows.
8. Remove the nut (Y) from the socket (R). Remove
the cotter pin (X) and washer (W) from the pivot
(V).
9. Install the socket (R) into the rocker arm. Install the
pivot (V) into the roller bracket.
10. Secure the socket (R) with the nut (Y). Secure the
pivot (V) with the washer (W) and cotter pin (X).
11. The outside rollers (AA), washers (Z) and cotter
pins (AA) are shipped loose. Slide a washer, roller,
and other washer onto each end of roller bar. Insert
cotter pins thru outer ends of roller bar and spread
legs fully. On the left end of roller bar, an inner
cotter pin is already installed to position the roller.
Be sure legs are spread fully.
12. Check all three blade capscrews to be sure they are
torqued from 50 to 70 ft. lbs. (68 to 96 N.m).
SETUP INSTRUCTIONS
NOTE
To install mower on tractor equipped with agricul¬
tural tires, you will need Kit #1690892.
1. Place the attachment lift in fully raised position.
Stop engine and remove key before leaving seat.
2. Place the cable (L, figure 1) over the pulley (F).
Insert the spacer (I). Attach the pulley (F) to
bracket (K) with 1-1/2" pin (J) and spring clip (E).
3. Use the four capscrews (D), washers (C), lock-
washers (B) and nuts (A) to attach bracket (K) to
bottom of tractor, the bracket is shown installed in
figure 2. Insert capscrews from top.
4. Install the l"pin (G, figure 1) and spring clip (H) in
the clevis until mower is hooked up.
5. Route the cable (B, figure 2) to the rear of the
tractor.
A. Nut, 3/8-16 G. Pin, 1" long shaft
B. Lockwasher, 3/8 H. Spring Clip
C. Washer, 13/32 1. Spacer
D. Capscrew, 3/8-1 6 x 1
J. Pin, 1-1/2" long shaft
E. Spring Clip K. Pulley Support Bracket
F. Pulley L. Cable
Figure 2. Pulley Support Bracket Installed
A. Pulley Support Bracket
B. Cable
4

Mower Setup, Hitching & Unhitching
6. R emove the nut and washer (B, figure 3). Position
the lift link (A) at 90° angle to arm (J). Reinstall nut
and washer (B).
Figure 3. Lift Cable and Guards
A, Lift Link F. Nuts
B. Nuts and Washer G. Cable Guard
C. Pin, 1" long shaft H. Nuts
D. Spring Clip I. Pulley Mounting Bracket
E. Cable J. Arm
7. Connect the cable clevis to the lift link with the 1"
pin (C) and spring clip (D).
8. Remove the two capscrews (F), position the cable
guard (G) as shown, then reinstall capscrews to
secure.
9. Place the cable (D, figure 4) on the pulley (I).
Assemble the capscrew (F), belt stops (G), pulley (I)
and bracket (L) as shown. Check assembly by
referring to item I in figure 3.
Figure 4. Lift Cable and Guards
A. Lift Link G. Belt Stops
B. Spring Clip H. Spacer
C. Pin, 1" long shaft I. Pulley
D. Cable J. Nut, 3/8-16
E. Cable Guard K. Lockwasher, 3/8
F. Capscrew, L. Pulley Mounting Bracket
3/8-16 x 1-1/2
10. R emove the two nuts (H, figure 3), position the
pulley mounting bracket (I) as shown, then reinstall
the nuts (H).
5

Mower Setup, Hitching & Unhitching
11. M ake sure the lift bracket (A, figure 5) is installed
with hardware (B) as shown inserting capscrew
from inside. Use two 3/8-16 x 1 capscrews, 3/8
lockwashers and 3/8 nuts.
A. L ift Bracket B. Hardware
12. U sing the rear holes in each footrest, install the
upstops (D, figure 6) as shown. See figure 7 to check
installation. Notice for tractors with agricultural
tires, different holes (B, figure 7) are used.
A. Capscrew, 5/16-18 x 1-1/2
B. Washer, 5/16
C. Washer, 13/32 x 1.5 (special)
D. Upstop
E. Washer, 5/16
F. Lockwasher, 5/1 6
G. Nut, 5/16-18
A. Upstop Bracket B. For Ag Tires
13. A ttach the belt stop (H, figure 8) to the left-hand
mower bracket with fasteners shown.
A. Spacer
B. Capscrew, 7/16-14 x 3-3/4
C. Lockwasher, 7/16
D. Hitch, right-hand I Nut, 7/16-14
E. Nut, 5/16-18 j Hitch, left-hand
F. Lockwasher, 5/16 K Capscrew. 5/16-18 x 1
G. Washer, 5/16
H. Belt Stop
6

Mower Setup, Hitching & Unhitching
14. Install the mounting brackets (D, figure 8) with
four 7/16 x 2-1 /4 capscrews, lockwashers and nuts
as shown. The brackets are shown installed in figure
9. Do not tighten the hardware at this time. After
you hitch the mower to this bracket (see Mower
Hitching) you will center the bracket on the axle
and then tighten the hardware.
Figure 9. Mounting Brackets
A. Mounting Bracket
HITCHING THE MOWER
1. Make sure all parts have been installed as described
in "Setup Instructions."
2. Make sure electric clutch has been installed as
described in instructions supplied with the clutch.
3. Place tractor and mower on a smooth level surface.
4. Turn the front wheels for a sharp left turn and slide
the mower under the tractor from the right side.
5. Align the mower hitch under the mounting brackets
on tractor front axle (see figure 9). From front of
tractor use a wood block as a support and a plank as
a lever to lift the mower hitch into the mounting
brackets. While holding mower up install a pin and
spring clip in each side to attach mower to mount¬
ing brackets (procedure is most easily done by two
persons). Use front holes for tractors with agricul¬
tural tires, rear holes for turf tires.
6. Center the mower on the axle, then tighten the
hardware for the mounting brackets.
7. Install idler pulley bracket (A, figure 10) as follows.
Attach front plate (D) with two 7/16 x 1 capscrews,
7/16 lockwashers and 7/16 nuts. Be sure lock-
washers and nuts are inside. Secure rear of bracket
to hitch with pins and clips (C).
8. Pull V-belt up from idler pulley support bracket to
front clutch (figure 10). Install the belt in the
INNER GROOVE (closest to engine) of the front
clutch. See figure 11.
9. Release the belt tension lever for slack and install
the other end of the V-belt on the mower drive
pulley.
Check to be sure belt is not twisted and is fully in all
pulley grooves (figure 11).
A. Bracket, Idler Pulley D. Front Support Plate
B. Capscrew, 7/16-14 x 1 E. Belt Tenion Lever
C. Pins and Clips
A. Clutch Pulley
B. Idler Pulleys
C. Mower Pulley
7

Mower Setup, Hitching & Unhitching
10. Attach the lift cable to the mower lift bracket
(figure 12).
A. Lift Cable
UNHITCHING THE MOWER
1. Unhook lift cable from mower. To fasten cable out
of the way, pin the cable end to the cable portion
behind the lift pulley under the tractor.
2. Lift the belt tension lever (E, figure 10) for slack and
remove the V-belt from the mower drive pulley.
3. Remove the idler pulley support bracket (A, figure
10) from the tractor. Remove clutch cover to
remove V-belt from front clutch.
4. Use the same leverage system as for installation to
remove the hitch pins and lower mower to ground.
Store pins in mower hitch.
5. Remove mower from under tractor.
8

Operation
CONTROLS
Refer to figure 13 to identify the controls.
^k WARNING
Before leaving the operator’s seat for any reason,
make sure front clutch switch is off, the engine is
stopped, ignition key is removed and parking brake
is set.
GENERAL INSTRUCTIONS
The tractor supplies both power and motion for the
mower. Therefore, tractor operation is vital to proper
operation of your mower. Read this section and also the
operating instructions in your tractor manual.
^k WARNING
Stop the engine, remove key, shift into neutral, set
parking brake, disengage PTO, and wait for all
moving parts to stop before attempting to service,
inspect, or adjust the mower.
CHECKS BEFORE STARTING
1. Check the mower to be sure it is properly installed
and to be sure that all nuts, bolts, and pins are
securely fastened.
2. Refer to the Normal Care Section of this manual to
determine and perform any needed care of the
mower.
3. Clear the lawn of all sticks, stones, wires and other
debris which may be caught or thrown by the
mower blades.
STOPPING THE MOWER
To stop the rotary mower blades during operation,
disengage the mower PTO by placing the clutch switch in
the OFF position. Always disengage the mower PTO
before raising the mower.
Figure 13. Locations
Item Name
Function
A Lift Lever Used to raise & lower
mower.
B Switch Used to engage and dis-
engage mower.
Functions of Controls
9

Operation
STARTING THE MOWER
To start the mower into operation when you arrive at the
work site (engine running) proceed as follows.
1. Use the tractor lift lever to lower the mower to its
work position.
2. Set engine speed control for desired mowing speed.
3. Engage the mower PTO clutch to start the mower
blades.
4. Start the tractor into motion at ground speed best
suited for conditions.
warning
For your personal safety, stop the mower immedi¬
ately if mower or tractor begins to vibrate exces¬
sively or if you strike a foreign object. Then stop the
tractor engine, remove key, and set the parking
brake. Check the tractor and mower and correct the
cause of vibration before starting again.
6. When operating the mower for the first time, begin
on level ground at a slow tractor speed until you
become familiar with all controls and the handling
of your tractor.
CUTTING HEIGHT
The exact cutting height will depend upon the type and
condition of your lawn and your own personal desires.
Most lawn should be mowed to keep the grass approxi¬
mately 2 to 3 inches (50 to 76 mm) high. Best results are
obtained by mowing grass often and not too short. To
help keep a green lawn, never mow more than 1 / 3 of the
height or more than 1 inch (25 mm) off the grass in a
single mowing.
For extremely tall grass, adjust for maximum cutting
height for the first mowing. Then readjust for the desired
height and mow again.
On thick or springy grass or soft ground, the mower roller
may sink into the lawn. In this case, it will be necessary to
readjust the cutting height to keep the grass at the same
height.
The cutting height is changed by turning the two cutting
height handles (see figure 14) equal amounts in the same
direction. Turn these handles clockwise for higher cut¬
ting; turn handles counterclockwise for lower cutting.
NOTE
Do not use the tractor lift system to raise and lower
the mower for height adjustments. Early belt
failures and poor cutting will result from this
practice.
If you want to adjust for a specifc cutting height, make
the adjustment on a hard level surface. Turn the blades so
they point straight forward and backward. Then measure
the distance between the surface and the rear tip of one
blade.
MOWING PATTERNS
Plan your mowing patterns to fit the area to be mowed. In
most cases, one or two passes should be made around the
area in a counterclockwise direction to keep the right side
of the mower close to trees, shrubs, fences, and buildings
as shown in figure 15. This practice will help eliminate
most of your hand trimming and keep the cut grass off
fences, buildings, and sidewalks.
Figure 15. Mow With Right Side Near Obstructions
10

Operation
Normally, the remainder of the area should be cut in a
clockwise direction as shown in figure 16. This will
prevent recutting of the grass and spread it evenly over
your lawn. The clippings, when decayed, make an
excellent organic fertilizer.
Figure 16. Mow In A Clockwise Direction
On frequently mowed lawns or when the grass is dry and
light, it may be practical to mow in a counterclockwise
direction. This practice will throw clippings toward the
center of the lawn where they can be easily gathered and
removed if desired.
Where possible, change the general mowing pattern for
each cutting. See figure 17 for mowing pattern diagrams.
Changing patterns will prevent matting of the lawn that
causes an uneven appearance.
Figure 17. Change Mowing Patterns
TRACTOR SPEED
Most forward speeds of the tractor may be useful for
mowing under some conditions. Higher speeds should be
used only for transporting on level ground. Always select
a speed slow enough to assure safe operation of the
tractor and a smooth even cutting of the grass. See
tractor manual, also.
fk WARNING
Operation On Slopes
For your personal safety, be especially careful when
operating with the mower on slopes. Always mow
up and down the face of slopes, and never across the
face. For added stability use two rear wheel weights
when mowing slopes from 20 to 35 percent (11.3 to
19.3 degrees). Never operate on slopes greater than
35 percent, which is a 3-1/2 feet rise in 10 feet
forward.
Also, use slow tractor ground speeds for better
handling and control when mowing slopes. Use
care when changing directions on any slope.
11

Normal Care
A WARNING
Before performing any maintenance, make sure
front clutch switch is off, the engine is stopped,
ignition key is removed and parking brake is set. !
NORMAL CARE INSTRUCTIONS
1. Before Each Use. Check the mower to be sure all
screws, nuts, bolts, and pins are in place and
securely fastened.
2. After Each Use. Check the underside of the mower
to remove all accumulated grass and dirt.
3. Every 25 Hours. With a grease gun, apply 2 or 3
shots of lithium base automotive grease to the
grease fitting inside the idler support bracket (figure
18). Keep grass off belts and pulleys.
4. Yearly. At least once a year check and lubricate
mower idler pulley pivot (see figure 19).
5. Yearly. At least once a year, and more often under
heavy use and immediately after striking any hard
object, clean, sharpen, and balance the mower
blades. See figure 19.
6. Y early. Check front clutch PTO shafts for rust and
wear. Clean out any dirt and debris. Lubricate with
light-weight oil or chain lube.
A-*284
1. Remove mower from tractor. (Refer
to procedure in Installation and
Adjustment Section).
2. Remove cotter pins to lift the bail
assembly.
3. Remove the taptite screws to remove
the right-hand cover (both covers can
be removed to check/clean inside of
mower deck).
4. Apply a few drops of oil to idler
pulley pivot. Be sure idler pivots freely.
5. Reinstall cover and taptite screws.
6. Reinstall adjusting rods or bail assem¬
bly and secure with cotter pins. Be sure
to spread legs of cotter pins.
Figure 19. Lubricate Idler Pulley Pivot (Yearly Care)
STORAGE
To protect your mower, store it in an enclosed, dry area.
To prepare the mower for off-season storage, perform the
following.
1. R emove mower from tractor. (Refer to procedure
in Installation and Adjustment Section).
2. Clean underside of mower to remove all grass and
dirt.
3. Coat all bare metal surfaces with paint or light coat
of oil to prevent rusting.
4. Check, sharpen, and balance the mower blades (see
figure 20).
12

Normal Care
1. Remove mower from tractor. (Refer to
procedure in Installation and Adjustment
Section).
2. Check each of the three blades. Blades
should be sharp and free of nicks and
dents. If not, sharpen blades as described
in remaining steps.
warning
For your personal safety, do not handle
the sharp mower blades with bare hands.
Careless or improper handling of blades
may result in serious injury.
3. To remove blade for sharping, use wood¬
en block to hold blade while removing
its blade mounting capscrew.
4. Use a file to sharpen blade to fine edge.
Remove all nicks and dents in bladeedge.
If blade is severely damaged, it should be
replaced.
5. Check and balance blade. Use a balanc¬
ing machine or the fixture shown. File
material off heavier end of blade until
it is balanced.
warning
For your personal safety, blade mounting
capscrews must be installed with the cup
washer and spline washer and then
securely tightened. Torque blade mount¬
ing capscrews to 45 to 55 Ft. Lbs. (61 to
74.6 N.m).
6. Reinstall each blade with the tabs point¬
ing up toward deck and secure with cap¬
screw, cup washer, and spline washer.
Use a wooden block to prevent blade
rotation and torque capscrews from 45 to
55 Ft. Lbs. (61 to 74.6 N.m).
WORKBENCH
CENTER THE BLADE’S CENTER HOLE
ON NAIL. DO NOT LET BLADE TOUCH
BENCH. A BALANCED BLADE WILL
REMAIN LEVEL.
Figure 20. Check, Sharpen, and Balance Mower Blades (Yearly Care - or as needed)
13

Troubleshooting
CONTENT OF SECTION
This section of the manual provides troubleshooting and
repair instructions for the more common and easily
corrected problems. For problems not covered in this
manual, it is recommended that you contact your dealer.
TROUBLESHOOTING PROCEDURES
Troubleshooting procedures are provided in figure 21.
To use these procedures, first locate the problem descrip¬
tion that best describes the trouble that you have
encountered. Check the possible causes one at a time in
the order that they are listed. Correct any problems that
are found and operate the mower again to verify that you
have eliminated the trouble.
Problem
1. Mower will not raise. A. Lift cable not attached or broken. Attach or
replace as necessary.
B. L ift lever problem. See tractor manual.
2. Mower cut is uneven. A. Mower not levelled properly. Repeat levelling
adjustment in mower installation procedure.
B. Tractor tires not inflated equally or properly.
See tractor manual for correct pressures.
C. Missing pin on mower hitch. Install pin.
3. Mower cut is rough looking. A. Engine speed too slow. Use 3/4 to full throttle.
B. Tractor ground speed too fast. Use low gear or
slower tractor ground speed.
C. Blades dull and require sharpening.
D. Mower drive belt oily or worn. Clean or replace
belt as necessary.
E. Mower idler pulley pivot sticking. Check/lubricate
as necessary. (See Normal Care).
F. Mower internal drive belt worm or broken. Replace
as instructed on next page.
G. Mower not levelled properly. See Adjustment.
4. Engine stalls easily with mower A. Tractor ground speed too fast. Use low gear or
engaged. slower tractor ground speed.
B. Engine speed too slow. Use 3/4 to full throttle.
C. Cutting height set too low when mowing tall grass.
Cut tall grass at maximum cutting height during
first pass.
D. Discharge chute jamming with cut grass. Mow grass
with discharge pointing toward previously cut area
Figure 21. Troubleshooting Procedures or wa ^ for drier conditions.
A WARNING
Before performing maintenance, make sure front
clutch switch is off, the engine is stopped, ignition
key is removed and parking brake is set.
Cause/Remedy
14

Troubleshooting
Problem
Cause/Remedy
5.
Excessive mower vibration.
A.
Blade mounting capscrews are loose: Torque
capscrews to 45 to 55 Ft. Lbs. (61 to 74.6 N.m).
B.
Mower blades are bent. Replace.
C.
Mower blades are out of balance. Remove, sharpen,
and balance blades as in figure 12.
6. Excessive belt breakage occurs.
A.
Loose or rough pulleys. File off rough edges
or replace as necessary.
B. Incorrect belt. Use belt designed for your mower.
C. Damaged mower pulley. See your dealer.
D. Mower not levelled properly. See Adjustment.
Figure 21. Troubleshooting Procedures
V-BELT REPLACEMENT
To replace the V-belt between the tractor PTO and the
mower, follow the mower removal and installation
instructions provided in the Installation and Adjustment
Section of this manual.
To replace the internal V-belt, proceed as follows:
1. Remove the mower from the tractor as instructed in
the Installation and Adjustment Section of this
manual.
2. Lift slightly the bail assembly to provide access for
cover removal.
3. Remove the 14 taptite screws (item E) from the
covers.
4. Remove the cover (item D).
5. Remove the old belt.
6. Clean the interior of the mower belt housing.
7. Check the idler pulley pivot (item C) to be sure it
moves freely. Lubricate the pivot with a drop or two
of oil if necessary, and wipe up any excess oil.
8. Install the new belt. Check to be sure the belt is
installed properly and is seated in all pulley grooves.
9. Reinstall the covers (item D) and secure them with
the taptite screws. When installing the right-hand
cover, be sure the belt is positioned in the belt guide
which is located on bottom of cover.
A. Bail Assembly
B. Cotter Pins
C. Taptite Screws
D. Cover
E. Pulley Pivot
10. R einstall the level adjusting rods (item A) or the
bail assembly. Reinstall the cotter pins (item B) and
spread cotter pin legs.
15

Adjustments
A WARNING
Before performing any adjustments, make sure
front clutch switch is off, engine is stopped, ignition
key removed and parking brake set.
DRIVE BELT TENSION
When the mower is fully installed, the top of the belt
tension arm should be in the green zone of the adjustment
decal on the idler support bracket (see figure 23). if not,
the belt tension needs adjustment.
To adjust belt tension, first loosen the locking nut on the
adjustment screw inside the idler support bracket. Then
turn the adjusting screw to set the top of the arm in the
green zone. Turning the screw clockwise increases belt
tension; turning it counterclockwise decreases belt ten¬
sion. Tighten locknut to hold adjustment.
MOWER LEVELING PROCEDURE
The following adjustment is important and should be
performed before using the mower. This adjustment is
normally required only when installing the mower for the
first time or when reinstalling the mower after repairs
were made to the tractor or mower hitches which might
have affected the level. To level the mower, proceed as
follows.
1. Check tractor tire pressures. The front tires should
have equal pressure and the rear tires should have
equal pressure. (Refer to your tractor Operator’s
Manual for correct tire pressure).
2. Turn both mower height adjustment handles (item
A, figure 24) fully clockwise to the highest cutting
height position.
A WARNING
For your personal safety, do not handle the sharp
mower blades with bare hands. Careless or im¬
proper handling of blades may result in serious
injury
3. Rotate the mower blades so the tips point straight
forward and backward as shown in figure 24.
4. Measure and note the distance from the front tip of
the center blade to the ground.
5. Measure the distances from the rear tips of the two
side blades to the ground. The side blade measure¬
ments should be the same, and the rear measure¬
ment should be 1/8 to 1/4 inch (3 to 6 mm) less than
the measurement for the center blade front tip made
in step 4.
NOTE
If the measurements taken are satisfactory the
mower is level and needs no adjustment. If the
measurements are incorrect, the mower bail assem¬
bly eyebolt must be adjusted according to step 6.
Both eyebolts must be adjusted to level the mower
front to back. If only slight side-to-side leveling of
the two side blades is required, the eyebolt of only
one side need be adjusted.
A. Adjustment Handle C. Eyebolt
B. Jam Nut
16

Adjustments
^WARNING
To avoid possible injury when performing step 6,
block up the front of the mower before removing
the eyebolts or yokes so the mower will not drop
down.
6. Level the mower according to the following.
a. Loosen the jam nuts (item B, figure 24).
b. Remove the cotter pins and then disconnect the
eyebolts or yokes (item C, figure 23) from the
mower hitch.
c. Turning the eyebolts or yokes changes the length
of the bail assembly arms. Shorten the bail
assembly arms to decrease the front height of the
mower. Lengthen the arms to increase the front
height. Be sure to give both eyebolts or yokes an
equal number of turns for front to back leveling.
d. Reinstall the eyebolts or yokes on the hitch (the
cotter pins need not be reinstalled yet) to check
the blade tip measurements. Continue the adjust¬
ment and check until the center blade front tip is
1/8 to 1/4 inch higher than the side blade rear
tips.
e. Reinstall the eyebolts or yokes on the hitch and
reinstall the cotter pins. Spread the cotter pins
around the hitch pins. Then reinstall the jam
nuts (item B).
FRONT PTO CLUTCH ADJUSTMENT
The front, electrically operated PTO clutch is adjusted at
the factory and does not require frequent adjustment.
However, if the clutch engages slowly or fails to engage at
all, adjust it as follows:
1. D isconnect tractor headlight wires and then re¬
move the hood. For easier access you may want to
remove the battery and battery support. RE¬
MEMBER, remove NEGATIVE BATTERY
CABLE FIRST AND INSTALL IT LAST.
NOTE
The best, most accurate way to adjust clutch is to
remove V-belt pulley and check clutch movement
using a dial indicator. Measure for .010 inch (.254
mm) clearance between mating clutch faces, if you
don’t have access to a dial indicator, the following
procedure should still be sufficient to adjust clutch.
2. If clutch has been slipping, tighten each of the three
adjusting nuts 1/3 turn (advance two faces of nut).
Be sure that all three nuts are turned equally.
3. Insert a .010 inch (.254 mm) feeler gauge in the
clearance gap as near to the adjusting nuts as
possible (figure 25). You may need to use a wire
feeler gauge or one designed with an angled end.
Do not insert feeler gauge more than 1/16 inch (1.6
mm). If feeler gauge can not be inserted at least 1/16
inch, turn the three adjusting nuts counterclockwise
1 / 2 of a turn and repeat check.
NOTE
With much wear a lip may form on larger clutch
face which will prevent feeler gauge from reaching
actual mating faces. At that time it may be neces¬
sary to adjust by trail and error. Set clutch for initial
.010 inch clearance. If clutch still slips advance
three adjustings nuts equally one face of nut at a
time until test operation shows satisfactory engage¬
ment and disengagement.
4. When adjustment is complete reinstall battery (if
removed) and tractor hood.
17

CONVERSION CHART
The following chart is for reference only.
FRACTION
DECIMAL
METRIC
1/32"
.031 .79 mm
1/16"
.062
1.59
mm
3/32"
.094
2.38
mm
1/8"
.125
3.17
mm
5/32"
.156
3.97 mm
3/16" .187
4.76
mm
7/32"
.219
5.56
mm
1/4"
.250
6.35
mm
9/32"
.281
7.14
mm
5/16"
.312
7.94
mm
11/32"
.344
8.73
mm
3/8"
.375
9.53 mm
13/32"
.406
10.32 mm
7/16"
.437
11.11 mm
15/32"
.469
11.91
mm
1/2"
.50
12.7
mm
17/32"
.531
13.49
mm
9/16"
.562
14.29
mm
19/32"
.594
15.08
mm
5/8"
.625
15.87 mm
21/32"
.656
16.77 mm
11/16"
.687
17.46
mm
23/32"
.719
18.26
mm
3/4"
.75
19.05
mm
25/32"
.781
19.84
mm
13/16"
.812
20.64
mm
27/32"
.844
21.43 mm
7/8"
.875 22.23 mm
29/32"
.906 23.02
mm
15/16"
.937
23.81
mm
31/32"
.969
24.61
mm
1"
1.0
25.4
mm
18