Bolens 137-465A - Manual (Page 11)

Variable Speed— See page 28.
Front Pivot Bar— Lubricate at least once a season
with light oil.
Steering and Drag Link— Should be lubricated
once a season with light oil.
Lubricate the four rear axle bearings with SAE
30 oil once a season. See figure 19.
The chain can be lubricated by wiping it with an
oily rag.
The differential and transmission are sealed at the
factory and require no further lubrication.
FIGURE 19. REAR AXLE ASSEMBLY
CHAIN ADJUSTMENT
To tighten the chain, loosen two locknuts on each
side of rear axle as shown in figure 19.
Tighten the adjusting nuts (figure 20) equally on
both sides. Tighten until the chain has
Vz inch
slack between the sprockets.
The adjusting nuts can be tightened individually
to align the axle.
Tighten the 4 locknuts after the adjustment is
made.
Adjastingi %
Chain
FIGURE 20. CHAIN ADJUSTMENT
AIR CLEANER
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. Refer to figure 21.
When assembling the air cleaner, make certain the
lip of the foam element extends over edge of the
air cleaner body. The foam element will form a
protective seal.
Step 1. Remove two screws and lift off complete
air cleaner assembly.
Step 2. Remove screen and spacers from foam
element.
Step 3. Remove foam element from air cleaner
body.
Step 4. a. Wash foam element in kerosene or
liquid detergent and water to remove
dirt.
b. Wrap foam in cloth and squeeze dry.
c. Saturate foam in SAE 30 engine oil,
then squeeze out excess oil.
d. Assemble parts, fasten to carburetor
with screw.
CLEANING ENGINE AND BLADE HOUSING
Any fuel or oil spilled on the machine should be
wiped off promptly. Grass, leaves, and other dirt
must not be left to accumulate around the cooling
fins of the engine or on any part of the machine.
Clean the underside of the blade housing after
each mowing.
BELTS
Check that belts are free of oil or dirt. Wipe the
belts periodically with a clean rag.
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