Bolens 120-337A - Manual (Page 13)

FIGURE 26.
NOTE
When replacing the blade, be sure
the side of the blade marked “Bot­
tom” or having the part number is
facing the ground when the mower
is in the operating position.
To insure safe operation of your unit, ALL nuts
and bolts must be checked periodically for correct
tightness.
Blade Mounting Torque
3/8" Dia. Bolt—375 in. lb. min., 450 in. lb. max.
5/16" Dia. Bolt 150 in. lb. min., 250 in. lb. max.
ENGINEOIL
CHECK OIL LEVEL before starting engine and
after every 5 hours of operation.
ADD oil as necessary to keep level full to point of
overflowing.
Before removing oii fill plug, clean area around
plug to prevent dirt from entering oii fill hole.
Engine should be in a level position when check­
ing oil.
CHANGE OIL after first 5 hours of operation.
Thereafter change every 25 hours. Change oil
while engine is warm. Oil may be drained thru
drain on bottom of engine. To drain completely,
always place engine level when draining thru the
bottom. Oil capacity 1-1/4 pints. See figure 27.
DECK
The underside of mower deck should be cleaned
after each period of use as grass clippings, leaves,
dirt and other matter will accumulate. This ac­
cumulation of grass clippings, etc., is undesirable
as it will invite rust and corrosion and may cause
an uneven discharge of grass clippings at the next
cutting.
Pay particular attention to the area of the rear baf­
fle and chain. Grass may accumulate in this area
and must be cleaned out periodically to prevent
possible problems with the clutch engagement.
The deck may be cleaned by tilting the mower for­
ward or on its side and scraping clean with a
suitable tool or by washing with a stream of water
from a garden hose.
A
CAUTION
Do not direct the stream of water at
a hot engine as damage to the
engine may result. Be sure spark
plug wire is disconnected.
FIGURE 27.
AIR CLEANER
CLEAN AIR CLEANER and re-oil element every 25
hours under normal conditions. Clean every few
hours under extremely dusty conditions. Poor
engine performance and flooding usually in­
dicates that the air cleaner should be serviced.
See figure 28.
1. Remove screw.
2. Remove air cleaner carefully to prevent dirt
from entering carburetor.
3. Take air cleaner apart and clean.
a. WASH foam element in kerosene or a li­
quid detergent and water to remove dirt.
b. DRY foam completely by wrapping and
squeezing in a cloth.
c. SOAK foam with engine oil. Squeeze to
distribute and remove excess oil.
4. Reassemble parts and fasten to carburetor.
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