Maintenance, Spark plug maintenance, Air cleaner maintenance – Sears 536.79751 User Manual

Page 12

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MAINTENANCE

AIR CLEANER MAINTENANCE

Replace the filter once a year; more often under dusty or

dirty conditions. DO NOT attempt to clean or oil the air
filter.

To install a new air filter, do the loilowing:

Disconnect the spark plug wire from the spark plug.

Turn the cover (See Fig , 9) to the left (counterclock

wise) and remove the cover and the air filler from the

flange,.

® Discard the air filter.

® Clearr the cover and the flange thoroughly

® Insert the new air filter into the cover.

® Push the cover firmly against the flange and turn it

to the right (dock’/vise) as tar as it wil! go (See Fig
9 Be sure the retainers are locked around the
flange.

® Reconnect the spark plug wire

CAUTION: NEVER RUN THE ENGINE
WITHOUT THE AIR CLEANER ELEMENT
INSTALLED. A DEFECTIVE AIR CLEANER
CAN RESULT IN LOSS OF ENGINE POWER
AND CAN CAUSE EXCESSIVE WEAR OR
DAMAGETOTHE ENGINE COMPONENTS
IF DIRT OR DUST IS PERMinCD TO EN
TER THE ENGINE THROUGH THE CAR
BURETOR, A DAMAGED AIR CLEANER,
OR ONE THAT iS CLOGGED WITH DUST
OR DIRT SHOULD BE REPLACED IMME
DIATELY.

SPARK PLUG MAINTENANCE

Clean the spark plug and reset the gap periodically.
Clean the area around the spark plug base, before
removal, to prevent dirt from entering into the engine.
Replace the spark plug if the electrodes are pilled or

burned or iflhe porcelain is cracked. Clean the spark plug
by carefully scrapping the electrodes (do not sand blast
or use a wire brush). Be sure the spark plug is clean and
free of foreign material. Check the electrodes gap with a
wire teeier gauge and reset to .035 If necessary. If a new
spark plug is needed, reierto the Engine Operation and

Maintenance manual for the proper replacemen! spark

plug,.

Before reinstalling the sparkplug, coat the threads lightly

with graphite to insure easy removal, Tighten the spark

plug firmly info the engine. If a torque wrench is available,

torque the spark plug to 15 foot- pounds.

TURN

COVER

TO THE LEFT

CLOCKWISE)
TO REMOVE

FLANGE

FILTER

RETAINER

SLOT

TURN COVER
TO THE RIGHT

(CLOCKWISE)
TO REMOVE

FIG. 9