Air filter, Muffler, Spark plug – Craftsman 917.77341 User Manual

Page 11: Cleaning

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TO CHANGE ENGINE OIL
NOTE: Before tipping trimmer to drain
oil, drain fuel lank by running engine
until fuel tank is empty.
• Disconnect spark plug wire from spark

plug and place wire where it cannot
come in contact with spark plug.

• Remove engine oil cap; lay aside on a

clean surface.

• Tip trimmer on its side as shown and

drain oil into a suitable container.

Rock trimmer back and forth to remove

any oil trapped inside of engine.

• Wipe off any spilled oil on trimmer and

on side of engine.

• Fill engine with oil. Fill only to the

"FULL“ line on the dipstick. DO NOT

overfill.

• Replace engine oil cap.
• Reconnect spark plug wire to spark

plug.

Container

AIR FILTER
Your engine will not run properly and

may be damaged by using a dirty air

filter.

Replace the air filter every year, more
often if you mow in very dusty, dirty
conditions. Do not wash air filter.

TO CHANGE AIR FILTER
• Remove the air filter by turning

clockwise to the stop and pull away
from collar.

• Remove filter from inside of cover.
• Clean the inside of the cover and the

collar to remove any dirt accumulation.

• Insert new filter into cover.
• Put air filter cover and filter into collar

aligning the tab with the slot.

• Push in on cover and turn counter*

clockwise to tighten.

Collar

Turn

clockwise

to remove

Slot

Air filter

Air filter
cover

Turn
counterclockwise to
tighten

MUFFLER

Inspect and replace corroded muffler as
it could create a fire hazard and/or

damage.

SPARK PLUG

Change your spark plug each year to
make your engine start easier and run
better. Set spark plug gap at .030 inch.

CLEANING
IMPORTANT:
For best performance,
keep trimmer free of built-up grass and

trash. Clean the underside of your
trimmer after each use.

ACAUTION: Disconnect spark plug wire

from spark plug and place wire where it

cannot come in contact with the spark
plug.
• Turn trimmer on its side. Make sure air

filter and carburetor are up. Clean the

underside of your trimmer by scraping
to remove build-up of grass and trash.

• Clean engine often to keep trash from

accumulating. A clogged engine runs

hotter and shortens engine life.

• Keep finished surfaces and wheels

free of all gasoline, oil,etc.

• We do not recommend using a garden

hose to clean trimmer unless the
electrical system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in
shortened engine life.

11

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