MTD 145-660A User manual

Owner's Operating
Service Instruction
Manual
• ASSEMBLY
• OPERATION
• REPAIR PARTS
10 *
Model Nos.
145-660A
145-672A
145-760A
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WARRANTY
For one year from date of purchase, MTD Products Inc will replace for the original purchaser, free
of charge, F.O.B. factory or authorized service firm, any part or parts found to be defective in material
or workmanship. All transportation charges on parts submitted for replacement under this warranty
must be paid by the purchaser. This warranty does not irfMude replacement of* parts which become
inoperative through misuse, excessive use, accident, neglect, improper maintenance or alterations by
unauthorized persons. This warranty does not include the engine, motor, battery, battery charger or any
component parts thereof. For service on these units, refer to the applicable manufacturer's warranty.
The above warranty will apply only to the original owner and will be effective only if the warranty
card has been properly processed. It will not apply where the unit has been used commercially.
Warranty service is available through your local authorized service dealer or distributor. UNDER
NO CIRCUMSTANCES WILL THE RETURN OF A COMPLETE UNIT BE ACCEPTED BY THE
FACTORY UNLESS PRIOR WRITTEN PERMISSION HAS BEEN EXTENDED.
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MTD PRODUCTS INC
PRINTED IN U.S.A.
5389 WEST 130th STREET • P. 0. BOX 2741 CLEVELAND OHIO 44111
FORM NO. 770-5651

I IMPORTANT
SAFE OPERATION PRACTICES FOR RIDING VEHICLES
1. Know the controls and how to stop quickly—
READ THE OWNER'S MANUAL.
2. Do not allow children to operate vehicle. Do not
allow adults to operate it without proper instruc¬
tion.
3. Do not carry passengers. Keep children and pets a
safe distance away.
4. Clear work area of objects which might be picked
up and thrown.
5. Disengage all attachment clutches and shift into
neutral before attempting to start engine .
6. Disengage power to attachment(s) and stop engine
before leaving operator position.
7. Disengage power to attachment(s) and stop en¬
gine before making any repairs or adjustments.
8. Disengage power to attachment(s) when transport¬
ing or not in use.
9. Take all possible precautions when leaving ve¬
hicle unattended such as disengaging power-
take-off, lowering attachments, shifting into neu¬
tral, setting parking brake, stopping engine and
removing key.
10. Do not stop or start suddenly when going uphill or
downhill. Mow up and down face of steep
slopes; never across the face.
11. Reduce speed on slopes and in sharp turns to pre¬
vent tipping or loss of control. Exercise extreme
caution when changing direction on slopes.
12. Stay alert for holes in terrain and other hidden
hazards.
13. Use care when pulling loads or using heavy
equipment.
A. Use only approved drawbar hitch points.
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 owner's manual.
14. Watch out for traffic when crossing or near road¬
ways.
15. When using any attachments never direct dis¬
charge of material toward bystanders nor allow
anyone near vehicle while in operation.
16. Handle gasoline with care-it is highly flammable.
A. Use approved gasoline container.
B. Never remove cap or add gasoline to a run¬
ning or hot engine or fill fuel tank indoors.
Wipe up spilled gasoline.
C. Open doors if engine is run in garage — ex¬
haust fumes are dangerous. Do not run engine
indoors.
17. Keep the vehicle and attachments in good operat¬
ing condition, and keep safety devices in place.
Use guards as instructed in owner's manual.
18. Keep all nuts, bolts, and screws tight to be sure
the equipment is in safe working condition.
19. Never store the equipment with gasoline in the
tank inside a building where fumes may reach an
open flame or spark. Allow engine to cool before
storing in any enclosure.
20. To reduce fire hazard keep engine free of grass,
leaves or excessive grease.
21. 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.
22. Do not change the engine governor settings or
overspeed the engine.
23. When using the vehicle with mower, proceed as
follows:
(1) Mow only in daylight or in good artificial light.
(2) Never make a cutting height adjustment while
engine is running if operator must dismount to
do so.
(3) Shut engine off when removing grass catcher
and/or unclogging chute.
(4) Check blade mounting bolts for proper tight¬
ness at frequent intervals.
24. Check grass catcher bags frequently for wear or
deterioration. Replace with new bags for safety
protection.
25. Look behind to make sure the area is clear before
placing the transmission in reverse and backing
up.
2

INDEX
Safe Operation Practices . 2
Index and Assembly Instructions .3
Activating the Battery .4
Attaching the Cutting Deck. 6
Controls and Preliminary Checks .8
Operating Instructions . 10
Maintenance .11
Illustrated Parts for Tractor. 1 8, 20 & 22
Parts List for Tractor.. 19, 21 & 23
Gear Box for Deck .25
Parts List for Gear Box.25
Illustrated Parts for 34" Deck . 26
Parts List for 34" Deck .27
Illustrated Parts for Transaxle.28
Parts List for Transaxle .29
Wiring Diagram and F'arts List for 8 H. P. Tractor .... 30
Wiring Diagram and Parts List for
10 H. P. Tractor . 3 1
Troubleshooting Chart . 3 2
Battery Warranty .33
Parts Information.34
ASSEMBLY
GRASS CATCHER Model No. 194-015A is available as
optional equipment for the mowers shown in this man¬
ual.
f WARNING f
The mower shall not be operated with¬
out the entire grass catcher or chute de¬
flector in place.
NOTE
Under normal usage bag material is subject to wear,
and should be checked periodically. Be sure any re¬
placement bag complies with the mower manufactur¬
er's recommendations.
Use factory replacement bag Number
764-0121.
ASSEMBLY
The steering wheel, seat and deck wheels, with the
necessary hardware, are easily assembled to the ma¬
chine. The battery must be activated and installed
as outlined in this section and the cutting deck must
be attached.
TIRE PRESSURE
For shipping purposes, the tires on your unit may be
over-inflated. Tire pressure should be reduced before
unit is put into operation. Pressure should be approx¬
imately 15 p.s.i. Equal tire pressure should be main¬
tained on all tires. Maximum tire pressure is 30 p.s.i.
ITT 1 rm
Vi" Nut
Vi" Lockwasher
W Lockwasher
‘ V* x % Bolt
Cotter Pin
K
Vi" I.D. Washer
Cotter Pin
Wing Nut
FIGURE 1. HARDWARE SUPPLIED
3

Step 6. Place rubber pad "N" over one of the mount¬
ing holes in the seat spring. See figure 4.
Step 7. Place the bolt on the seat through the rubber
pad and the seat spring.
Step 8. Assemble the rubber washer "M" and flat
washer "D" over the seat bolt and secure with
nut "C".
Step 9. Activate the battery.
FIGURE 4. SEAT ASSEMBLY
FIGURE 5. BATTERY
CAUTION
Always add electrolyte to battery be¬
fore battery is installed in vehicle.
A. Remove fill plugs.
B. Place package upright; pull tab back to edge of
carton, pull out hose; snip off end of hose. Fill each
cell until electrolyte level rises to split ring at bot¬
tom of vent well.
ASSEMBLY
The steering wheel, seat, battery and cutting deck
(8HP), with the necessary hardware are easily assem¬
bled to the machine.
NOTE
Reference to right hand side of machine
is from the normal operating position
facing forward.
Step 1. Remove the tractor and all parts from the car¬
ton. Make certain that ali loose parts and
literature have been removed before the car¬
ton is discarded.
Step 2. Place the steering wheel over the tapered end
of the steering column. Press it down until
the threaded end sticks through the steering
wheel. See figure 2.
NOTE
Line up the two flat sides of the steer¬
ing wheel hole and the two flat sides of
the steering column.
Step 3. Place the washer "B" over the steering col¬
umn, then the nut "A".
Step 4. Tighten the nut with a Vi" wrench.
Step 5. Press the cap on the steering wheel by hand
TOOLS NEEDED
Vi" Open End or Box Wrench
%" Open End or Box Wrench
(2) 7/16" Open End Wrench
Pliers
FIGURE 2.
4

DO NOT OVERFILL
C. After filling cells, wait five to ten minutes and add
additional electrolyte if necessary to ring electro¬
lyte to proper level.
D. Replace fill caps.
E. Charge battery for 10 to 15 minutes at 25-30 amps,
or for 30 minutes at 4-6 amps.
^ WARNING ^
Electrolyte is a mixture of sulphuric acid
and water. Avoid contact with skin,
eyes, and clothing. If electrolyte is
spilled flush area with clear water and
neutralize with solution of water and
baking soda or water and ammonia.
INSTALLING THE BATTERY
Step 1. Place the battery in the battery case with the
terminals to the rear. (See figure 6.)
NOTE
The positive battery terminal is marked
Pos. ( + ). The negative battery terminal
is marked Neg. (—).
Step 2. Hook the hold down rods under the battery
case and place the hold down over both rods.
Step 3. Secure the hold down with the wing nuts "L".
Tighten hand tight. (See figure 6.)
FIGURE 6.
Step 4. Attach the positive cable (from the starter
solenoid) and the small wire (from the am¬
meter) to the positive battery terminal with
the bolt "E", lockwasher "G" and nut "F" in
the assembly pack. (See figure 7.)
Step 5. Attach the negative cable, grounded, to the
negative battery terminal with the bolt "E",
lockwasher "G" and nut "F" in the assembly
pack.
FIGURE 8.
FIGURE 7.
Step 6. Cut the black rubber tubing approximately 6
inches long.
Step 7. Push the rubber tubing into the manifold of
the battery and place the other end into the
drain tube. (See figures 8 and 9.)
5

I
NOTE
The vented battery allows any gases or
liquid from the battery to be carried to
the rear of the mower through the drain
tube.
CAUTION
If the tractor is tipped up on end for any
reason the battery must be removed.
There may be a small amount of acid
in the drain tube that can come out
when the tractor is tipped.
FIGURE 9
TIRE PRESSURE
Reduce the tire pressure to 15 psi for operation. The
tires have been over-inflated for shipping. Equal tire
pressure should be maintained on all tires. Maximum
tire pressure is 30 psi.
FIGURE 10. DECK WHEEL ASSEMBLY
FIGURE 11. FRONT LINK ASSEMBLY
DECK ASSEMBLY
Step 1. Place the deck wheel over the deck axle and
secure it with washer "I" and cotter pin "K".
See figure 10.
Step 2. Attaching the cutting deck.
a. Place either blocks of wood or bricks un¬
der the rear wheels so the cutting deck
can slide under the tractor.
b. There are six link arms (4 long, 2 short)
on the cutting deck. Swing ail six arms
into the forward position.
c. From the front of the rider, grasp both
front links and hook them in the pins in
frame and secure with cotter pins "H".
See figure 11.
d. Place the two center links through the hole
in the foot rest and attach the short slotted
link to the pin in the lift arm and attach
the long link to the pin in the frame. See
figure 12. $
Short Slotted Link
long Link
T
Cotter Pin H
fmjSm
FIGURE 12. CENTER LINK ASSEMBLY

e. Place washer "J" over the short slotted link
and secure both links with cotter pins "H".
See figure 12.
f. Pull the belt through the slot in the frame
of the tractor.
9- Remove the top bolt on the belt guard.
See figure 13.
NOTE
Different heat shields are used depend¬
ing on the style of muffler used on your
tractor. If the heat shield on your tractor
is attached to the belt guard it is neces¬
sary to remove the bolt and nut shown
in figure 13.
FIGURE 13. BELT GUARD
h. Unplug the safety switch. See figure 14.
i. Remove the two bottom bolts on the belt
guard. Lift off the belt guard. See figure
14 .
j. Attach the deck belt to the engine pulley.
See figure 15.
NOTE
Be sure the bottom part of the belt goes
through the two brackets.
k. Remove the idler belt guard. See figure 16.
l. Reassemble the belt guard to the tractor.
m. Move the PTO lever to the ON position
and reassemble the idler belt guard. See
figure 17.
FIGURE 14. BELT GUARD REMOVAL
FIGURE 15. ATTACHING THE DECK BELT
7

CONTROLS AND PRELIMINARY CHECKS
CONTROLS
The controls on your tractor may be considered as
the following:
a. Throttle Control. The throttle control is used to reg¬
ulate the engine speed and choke the engine. The en¬
gine should be operated from % to full throttle when
operating the cutting deck or snow thrower. (Optional)
b. Gear Shift Lever. Use the following guide for gear
selection.
1st Gear:
Heavy grass cutting
Snow Blade
Snow Thrower
Pulling heavy loads
2nd Gear:
Normal grass cutting
Light snow throwing
Pulling light loads
3rd Gear:
Light grass cutting
Road Gear
Reverse:
Used to back up
FIGURE 18. CONTROLS
c. Parking Brake. To set the parking brake, pull the
parking brake lever back and hold it in the locked po
sition while moving the locking arm to the left. See
figure 16.
d. Clutch-Brake Pedals. Depress both of them all the
way down to stop or shift gears. Release pedals slowly
to engage. See figures 15. and 17.
8

FIGURE 19. PARKING BRAKE
NOTE
The pedals must be depressed in order
to start the engine.
CAUTION
Do not shift while in motion.
e. PTO Lever. The PTO lever engages the deck bell
when it is moved forward. Moving it to the rear dis¬
engages the deck belt. The engine will not start un¬
less the PTO is in the OFF position as shown in figure
20 .
f. Lift Lever. Depress the thumb button and pull back
on the lift lever to raise the attachments. See figure 20.
g. Ignition Switch. Turn the switch all the way to the
right to engage the starter. As soon as the engine
starts, release the ignition key so that the starter is
switched off. Turn the key to the left to shut off the
engine. See figure 18.
NOTE
The dutch-brake pedal must be de¬
pressed and the PTO lever must be in
the OFF position before the starter will
operate.
h. Light Switch.Pull the light switch out to turn on the
lights. See figure 18.
i. Ammeter. The ammeter registers the rate of battery
charge or discharge. The ammeter should register on
the plus ( + ) side when the engine is running in the
fast position until the battery is completely charged.
With a fully charged battery or with the engine idling
the ammeter will not show a charge. See figure 18.
FIGURE 20. CONTROLS
j. C utting Height 34" Cut Deck. Set the cutting height
by setting both wheel height adjusters in the desired
position and moving the lift lever all the way forward.
See figure 21.
FIGURE 21. WHEEL HEIGHT ADJUSTER 34" DECK
NOTE
When cutting over rough terrain, set
the cutting height with the lift lever
and set the wheel height adjusters so
they just clear the ground.
42" Cut Deck. The cutting height is adjustable by mov¬
ing the height adjustment lever by the right deck
wheel. Both deck wheels raise and lower together.
See figure 22.
9

I
FIGURE 22. WHEEL HEIGHT ADJUSTER-42" DECK
CHECKING OIL AND GASOLINE
NOTE
When packaged for shipment, the ma¬
chine contains no oil or gasoline. Be¬
fore starting the engine, oil must be
added to the engine crankcase and gas¬
oline to the tank. DO NOT mix oil with
gasoline.
flriggs & Stratton. Use a high quality detergent oil clas¬
sified "For Service SC or SD or MS". Nothing should
be added to the recommended oil.
Summer. (Above 4-0° F.) Use SAE 30. If not available
use SAE 10W-30 or SAE 10W-40.
Winter. (Under 40° F.) Use SAE 5W-20 or SAE 5W-30.
If not available, use SAE 10W or SAE 10W-30. Below
0° F., use SAE 10W or SAE 10W-30 diluted 10% with
kerosene.
Place the engine level. Fill the oil sump to the FULL
mark on the dipstick. Pour slowly. See figure 23.
Crankcase Capacity
10 H.P. 2% pints
8 H.P. 3 pints
FIGURE 23. BRIGGS & STRATTON DIPSTICK
OPERATING INSTRUCTIONS
iwARNING J
The mower shall not be operated with¬
out the entire grass catcher (optional) or
chute deflector in place.
NOTE
Under normal usage the grass catcher
bag material is subject to wear and
should be checked periodically. Be sure
any replacement grass catcher bag com¬
plies with the mower manufacturer's
recommendations.
Use factory replacement bag number
764-0121.
After striking a foreign object, stop the engine (motor),
remove the wire from the spark plug, thoroughly in¬
spect the mower for any damage and repair the dam¬
age before restarting and operating the mower.
STARTING THE ENGINE
Refer to page for information regarding oil and
gasoline requirements, check that spark plug wire is
connected, then proceed as follows:
Step 1. Be sure the fuel shut-off valve is open. See
figure
Step 2. With the machine set on level ground place
the gear shift lever in NEUTRAL (N) position.
See figure 18.
Step 3. Place the PTO lever in the OFF position as
shown in figure 20.
Step 4. Depress the clutch brake pedals all the way
down. See figures 20.
Step 5. Set the throttle control in the CHOKE position.
Step 6. Turn the ignition key to the right to START
position to start the engine. Allow the key to
return to the ON position. See figure 18.
10

NOTE STOPPING THE RIDER
A brief break-in period is essential to
ensure maximum engine and mower
life. This consists of running the engine
at half speed for a period of time re¬
quired to use one tank of gasoline. It
is also recommended to change crank¬
case oil after the first 2 hours of oper¬
ation.
Step 7. Set the desired cutting height. See figures 21
and 22.
Step 8. Lower the cutting deck with the lift lever. See
figure 20.
Step 9. Slowly engage the PTO lever. See figure 20.
STOPPING THE ENGINE
To stop the engine, turn the ignition key to the left to
the OFF position. Do not leave the key in the ignition
switch.
^ WARNING J
To stop the rider from moving forward or backward,
depress the clutch-brake pedals. See figure 18.
CAUTION
1. Keep all shields and guards in place.
2. Before leaving the operator's position:
Shift transmission to neutral
Set parking brake
Disengage attachment clutch
Shut off engine
Remove ignition key
3. Wait for all movement to stop and remove
spark plug lead before servicing machine.
4. Keep people and pets a safe distance away
from machine.
CAUTION
Whenever the mower is left unat¬
tended, disconnect the spark plug lead
and remove the ignition key.
STOPPING THE BLADES
Move the PTO lever towards you to stop the blades
from turning. See figure 20.
Parking brake MUST be disengaged be¬
fore unit is put into motion
NOTE
Unit is equipped with separate brake
and clutch pedals. To efficiently stop, it
is necessary to disengage clutch when
applying brakes.
MAINTENANCE
b. Oil Change
TROUBLESHOOTING
Refer to the chart on page 32 for troubleshooting en¬
gine problems.
CRANKCASE OIL
To ensure maximum engine performance, perform the
following periodic maintenance:
a. Oil Check
Check the oil level in the crankcase before each use
of the machine and after every two hours of operation.
Keep the oil level between ADD and FULL. See figure
23.
After the first two hours of operating a new engine,
drain the oil (see figure 24) from the crankcase while
engine is still hot and refill crankcase with new oi!;
thereafter change the oil after every 25 hours of op¬
eration. This procedure ensures for minimum wear
of engine parts and provides for virtually trouble-free
operation. To change the oil, proceed as follows:
Step 1. Remove oil filler plug.
Step 2. Drain the oil through the hole in the frame.
Step 3. Replace oil filler plug.
Step 4. Refill crankcase with oil. See page 10 for
quantity and type of oil.
11

I
Oil Drain Plug
FIGURE 24. BRIGGS & STRATTON OIL DRAIN PLUG
TRANSAXLE LUBRICATION
STEERING GEAR LUBRICATION
Lubricate the teeth on the steering segment, pinion
gear and slide with automotive multi-purpose grease
after every 24 hours of operation. See figure 26.
The transaxle is lubricated at the factory with three
pints of SAE 90 E.P. oil. When replacing or adding oil
remove the oil fill plug and fill the gear case until it
overflows from the fill plug. Replace the oil fill plug.
Remove the drain plug from the bottom of the trans¬
axle to drain the oil. The transaxle oil should be
checked when the oil is cold. Change the oil once a
year. See figure 25.
FIGURE 26. STEERING ASSEMBLY
RIGHT ANGLE DRIVE LUBRICATION
Check the lubricant level after every 24 hours of oper¬
ation. Lubricate with 4 ounces of E.P.G. Lithium grease.
Remove the four screws and take off the plate to check
Front Wheels— The front wheel bearings are self-lu¬
bricating oilite bearings. No additional lubrication is
necessary.
Rear Wheels— The rear wheel bearings are lubricated
by the oil in the transaxle.
King Pins— The king pins have self-lubricating oilite
bearings and require no additional lubrication.
Deck Wheel Bearings —The deck wheels should be re¬
moved once a year, cleaned and lubricated with a mul¬
ti-purpose type of grease.
FIGURE 27. GEAR CASE GREASE LEVEL
STEERING ADJUSTMENT
The "play" or looseness of the steering can be ad¬
justed by loosening the two hex bolts on the bracket
and lightly tapping the bracket towards the front of
the tractor. If the pinion gear becomes worn it can be
rotated one-half turn by removing the pin. (See figure
26.)
12

AIR FILTER
Under normal operating conditions, the air cleaner,
located on top of the carburetor, must be serviced
after every ten hours of use. Under extremely dusty
operating conditions, the air cleaner must be serviced
after every hour of operation. See figure 28.
Step 1. Remove the wing nut and cover.
Step 2. Remove the paper element from the support
base.
Step 3. To clean, tap the paper element (either top or
bottom) on a flat surface or wash in a non¬
sudsing detergent and flush from the inside
until the water is clear. After washing, air dry
thoroughly before using.
FIGURE 28A. BRIGGS & STRATTON AIR FILTER 8 H.P.
AIR FILTER 10 H.P. ENGINE
Clean and re-oil foam pre-cleaner at 3 month intervals
or every 25 hours, whichever occurs first.
1. Remove wing nut and cover.
2. Remove foam pre-cleaner element by sliding it up
off of the paper cartridge.
3 . A—Wash foam in liquid detergent and water.
B—Squeeze dry.
C—Oil with one ounce engine oil. Squeeze to dis¬
tribute oil evenly.
4. Assemble to paper cartridge. Reassemble cover and
wing nut. Screw wing nut down tight.
FIGURE 28B. BRIGGS & STRATTON AIR FILTER 10 H.P.
Yearly or every TOO hours, whichever occurs first, re¬
move paper cartridge. Clean by tapping gently on flat
surface. If very dirty, replace cartridge, or wash in
liquid detergent and water. Rinse until water remains
clear. Cartridge must be air dried thoroughly before
using.
NOTE: Service more often under dusty conditions.
CLUTCH-BRAKE PEDAL ADJUSTMENT
To adjust the angle of the clutch-brake pedal, remove
the cotter pin and washer on the clutch rod and turn
the clutch rod in or out of the ferrule to obtain the
most comfortable angle of the pedal when the pedal
is released. Replace the washer and cotter pin. See
figure 30.
The brake adjustment is made by using a Vi" deep well
socket and turning the adjusting nut clockwise through
the opening in the back panel. This reduces the dis¬
tance between the brake band and the drum. See fig¬
ure 29.
CAUTION
If the spring tension idler goes below
the height of the engine pulley when
the clutch-brake pedal is depressed it
will cause excessive belt wear and the
brake should be adjusted. See figure
30.
TRANSMISSION BELT REMOVAL
^ WARNING ^
Remove spark plug lead.
Step 1 Remove the deck belt from the engine pulley
in reverse order as described in the assembly
portion of this manual. See figures 10 through
15.
Step 2. Remove the hex bolt from the spring tension
idler.
13

NOTE: DO NOT ALLOW SPRiNG TENSION IDLER TO PIVOT BEYOND
THIS POINT WHEN BRAKE IS APPLIED. ADJUST BRAKE PEDAL TO
PLACE SPRING TENSION IDLER IN PROPER POSITION.
Stationary Idler
\.
Frame
Ferrule
Belt Clip
Spring Tension Idler
Transmission
Drive Belt
Clutch Rod-
Tiansaxle Pulley
Engine Pulley
Shoulder Bolt-
'Hex Nut
Clutch-Brake Pedal
Cotter Pin and Washer
FIGURE 30. CLUTCH
Hex Bolt
FIGURE 31. ENGINE PULLEY
NOTE
The idler bracket is notched so the belt
clip will be correctly positioned 1 .
Step 3. Remove the hex bolt holding the engine pul¬
ley to the crankshaft of the engine. Pull the
pulley off so the belt can be removed. See fig¬
ure 31.
BRAKE PEDAL ADJUSTMENT
Step 2. Remove the bolt holding the pulley to the
gear box.
Step 3. Slide off the pulley and remove the belt.
Step 4. Remove the shoulder bolt near the transaxle
pulley. See figure 30.
FIGURE 32. DECK DRIVE BELT
Step 5. Remove the hex nut on the pulley.
Step 6. Slide off the pulley.
Step 7. Re-assemble in reverse order with a new V-
belt.
DECK DRIVE BELT
Step 1. Remove the belt guard over the belt. See fig¬
ures 32 and 33.
BLADE DRIVE BELT-34"
Step 1. Remove the two belt guards on the deck pul¬
leys. (See figure 40.)
Step 2. Unhook the idler spring.
Step 3. Loosen the bolts holding the mounting bracket
to the deck.
Step 4. Remove the belt.
Step 5. Replace the belt and reassemble in reverse or¬
der.
14

FIGURE 33.
BLADE BELT-42" (See Separate Manual)
STARTER-GENERATOR BELT (8 H.P. Only)
After the first ten hours of operation and periodically
thereafter, the belt should be tightened or checked on
the starter-generator. If the starter-generator turns
over and the engine does not crank or there is a high
pitched squeel when the starter-generator is turned on,
it is an indication of a loose belt. To tighten, LOOSEN
the two bolts on the bracket and LOOSEN the two
bolts on the adjusting strap. Swing the starter-gener¬
ator away from the engine, towards the rear of the
mower, until the belt is tight. (Belt should deflect !4"
when depressed with your thumb). Tighten all bolts.
To remove the belt, loosen the starter-generator as
described above and remove the belt from both pul¬
leys. See figure 34.
REMOVING AND SHARPENING BLADES
Remove the center bolt and lockwasher. See figure
35. Pull the blade and blade adapter from the blade
spindle.
The adapter can be removed from the blade by re¬
moving the two adapter bolts, lockwashers and nuts.
FIGURE 35. BLADE REMOVAL
FIGURE 34. STARTER-GENERATOR BELT
15

[
WHEEL ADJUSTMENT
The caster (forward slant of the kingpin) and the cam¬
ber (tilt of the wheels out at the top) requires no ad¬
justment. Automotive steering principles have been
used to determine the caster and camber on the tractor.
The front wheels should toe-in Va inch. To adjust the
toe-in, loosen the hex jam nut, remove the elastic
locknut, drop the tie-rod end out of the hole in the
steering arm and screw the tie-rod end in or out to
make the adjustment. The distance "B" must be less
than "A" by Va inch. See figures 37 and 38.
To adjust the toe-in follow these steps:
1. Remove the elastic locknut and drop the tie rod
from the wheel bracket. See figure 36.
2. Loosen the hex jam nut on the tie rod. See figure 36.
3. Adjust the tie rod assembly for correct toe-in. Di¬
mension "B" should be approximately Va" less than
dimension "A". See figure 37.
A. ) To increase dimension "B", screw tie rod into
tie rod end.
B. ) To decrease dimension "B", unscrew tie rod
from tie rod end.
C.) Reassemble tie rod. Check Dimension. Readjust
if necessary.
CLEAN COOLING SYSTEM
Grass particles, chaff or dirt may clog the air-cooling
system, especially after prolonged service in cutting
dry grasses. Continued operation with a clogged cool¬
ing system may cause severe overheating and possible
engine damage. It is necessary to remove the blower
housing to completely clean this area. See figure 38.
FUEL SHUT-OFF VALVE AND FILTER
The fuel shut-off valve is located under the gasoline
tank and is opened by turning it counter-clockwise.
See figure 40.
The filter should be replaced once a year to insure
operating your engine with clean fuel. To replace the
filter, shut off the fuel valve and compress the legs of
the clamps on both sides of the filter and slide them
back. Replace the filter and replace the clamps.
FIGURE 39. SHUT-OFF VALVE
CARBURETOR ADJUSTMENTS
Minor carburetor adjustment may be required to com¬
pensate for differences in fuel, temperature, altitude
and load.
To Adjust Carburetor: Turn needle valve clockwise un¬
til it just closes. Caution: Valve may be damaged by
turning it in too far.
Now open needle valve 1 Va turns counter-clockwise.
Close jdle valve in same manner and open 114 turns.
This initial adjustment will permit the engine to be
started and warmed up prior to final adjustment.
FIGURE 37. TOE-IN
16

Finai Adjustment: Turn needle valve in until engine
misses (lean mixture) then turn it out past smooth op¬
erating point until engine runs unevenly (rich mix¬
ture). Now turn needle valve to the mid-point between
rich and lean so the engine runs smoothly. Hold throt¬
tle at idle position and set idle speed adjusting screw
until fast idle is obtained (1750 RPM). Hold throttle in
idle position and turn idle valve in (lean) and out
(rich) until engine idles smoothly. Then reset idle
speed adjusting screw so that engine idles at 1750
RPM. Release throttle—engine should accelerate with¬
out hesitation or sputtering. If engine does not accel¬
erate properly, the carburetor should be re-adjusted
to a slightly richer mixture.
CHOKE-A-MATIC CARBURETOR CONTROL
ADJUSTMENTS
Proper choke and stop switch operation is dependent
upon proper adjustment of remote control on the pow¬
ered equipment.
To Check Operation of Choke-A-Matic Controls:
a. Remove air cleaner.
b. Move remote control lever to CHOKE position. The
carburetor choke should be closed.
c. Move remote control to STOP position. Lever should
make good contact with stop switch.
To Adjust:
Place remote control lever on equipment in FAST (high
speed) position. Loosen control casing clamp screw
"B". Move control casing "A" and wire until lever "D"
touches choke operating link at "C". Tighten casing
clamp screw "B". Replace air cleaner.
OFF-SEASON STORAGE
If the machine is to be inoperative for a period longer
than 30 days, the following precautions are recom¬
mended:
Step 1. Working outdoors, drain all fuel from the
fuel tank. Use a clean dry cloth to absorb
the small amount of fuel remaining in the
tank, then run the engine until all fuel in car
buretor is exhausted.
^ WARNING ^
Do not drain fuel while smoking, or
if near an open fire.
Step 2. Drain all the oil from the crankcase (this
should be done after the engine has been
operated and is still warm) and refill the
crankcase with clean new oil.
Step 3. Disconnect the spark plug wire and remove
the spark plug from the cylinder. Pour about
six drops of engine oil into the cylinder and
then pull the recoil starter several times to
spread the oil on the cylinder wall. Replace
the spark plug, but DO NOT connect the wire.
Step 4. Clean the engine and the entire mower thor¬
oughly.
Step 5. Lubricate all lubrication points indicated in the
Maintenance Section, then wipe the entire
machine with an oiled rag in order to protect
the surfaces.
WHEEL SPACERS
The spacers on the rear wheels must be on the outside
of the wheels as shown in figure 42 when using th<
mowing deck.
If tire chains or a draw bar hitch is used on the tracto
it will be necessary to remove the cotter pins, spacer
and wheels. Place the spacers on the axles and secur
with the cotter pins.
NOTE
You cannot operate the tractor with
mowing deck when the spacers are
installed on the inside of the wheels.
17

IF YOU WRITE TO US ABOUT THIS ARTICLE
OR IF YOU ORDER REPLACEMENT PARTS AL¬
WAYS MENTION THIS MODEL & SERIAL NO
MODEL

PARTS LIST FOR 145-660A, 145-672A AND 145-760A
1 REF.
NO.
PART COLOR
NO. CODE
DESCRIPTION
NEW
PART
REF.
NO.
PART COLOR
NO. CODE
DESCRIPTION
NEW
PART
1 723-0155 Gas Gauge
31
—
Engine Part f
2
10970 Hoodf
32
—
Engine Part f
12369
Hood j
33
—
Engine Part f
3
723-0296
Hood Lock Ass'y.
34
—
Engine Part f
4
723-0149
Fuel Tank
35
—
Engine Part f
5 723-0151
Fuel Tank Strap
36
—
Engine Part f
6 712-0138 Hex NutVi-28 Thd.*
37
736-0329
Spring Lockwasher Vi*f
7 736-0329
Spring Lockwasher 14"*
38
710-0258
Hex Scr. 14-20 x .63* f
8 710-0195 Hex Hd. Scr. V 4 -28 x .62"*
39 09284
Belt Coverf
9 712-0287 Hex Nut 14-20 Thd.* 40
710-0148
Hex Scr. #8-32 x ,38*f
10
1 1967 Battery Box Ass'y-
41
710-0344
Hex Scr. %-16 x 114*
11
710-0279
Mach. Scr. 14-20 x 1.75"*
42
736-0300
Flat Washer .385 I.D.*
12
—
Engine -r
43
731-0208
Grille Insert
13
11999 Reinforcement Bracketf
44
736-0105
Belleville Washer
14 723-0153 Gas Hose 14 I.D. x 1014 Lg.
45
712-0130
Hex Locknut %-16*
15 723-0154 Gas Filter
46
710-0533
Hex Scr. %-18 x 2Vi*
16
723-0157 Hose Clamp
47
11946
Front Pivot Support
17 723-0152 Gase Hose 'A I.D. x 114 Lg.
48
736-0119
Spring Lockwasher 5/16*f
18
736-0119
Spring Lockwasher 5/16*
736-0169
Spring Lockwasher %*f#
19
712-0267
Hex Nut 5/16-18 Thd.*
49
712-0267
Hex Nut 5/16-18*f
20
—
Engine
712-0798
Hex Nut %-16*f#
21
—
Engine Part f
50
725-0222
Headlamp
22 738-0380
Hex Scr. 5/16-24 x 1.75"f
51
735-0156
Headlamp Mount
23
—
Engine Part f
52
719-0201
Grillef
24
736-0119
Spring Lockwasher 5/ 1 6"*f
719-0218
Grille!
25
712-0267
Hex Nut 5 / 16-1 8*t
53
710-0255
Truss Mach. Scr. 14-20 x .75*
26
725-0143
Starter—Generatorf 54
736-0329
Spring Lockwasher 14 Scr.*
27 710-0380
Hex Scr. 5/16-24 x 1.75f
55
712-0287
Hex Nut 14-20 Thd.*
28
—
Engine Part t
56
12635
Heat Shield
N
29
—
Engine Part f
57
754-0134
V-Belt % x 33.2 G-8110-1884
30
736-0264
Flat Washer .344 I.D.*f
*For faster service obtain standard nuts and bolts locally. If these items
cannot be obtained locally, order by part number and size as shown
on the parts list.
f8 H.P. Engine Tractor (660)
$10 H.P. Engine Tractor (672)
#10 H.P. Engine Tractor (760)
When ordering parts if color is important, use the ap¬
propriate color code listed below. (For example 11970
—459 Hood)
459—Mag. Flake
395—Heather Green
464—Willow Green
458—Arctic Blue
462—Red Flake
19