Air filter, Muffler, Spark plug – Craftsman 917.388111 User Manual

Page 13: Cleaning

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TO CHANGE ENGINE OIL

NOTE: Before tipping lawn mower to drain
oil, empty fuel tank by running engine until

fuel tank is empty.

1. Disconnect spark plug wire from spark

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

2. Remove engine oil cap; lay aside on a

clean surface.

3. Tip lawn mower on its side as shown

and drain oil into a suitable container.

Rock lawn mower back and forth to re­

move any oil trapped inside of engine.

4.

5.

6

.

7.

8

.

9.

Wipe off any spilled oil from lawn

mower or side of engine.

Slowly pour oil down the oil fill spout,

stopping every few ounces to check the

oil level with the dipstick.
Stop adding oil when you reach the

FULL mark on the dipstick. Wait a
minute to allow oil to settle.

Continue adding small amounts of oil,

rechecking the dipstick until oil level

settles at FULL. DO NOT overfill, or

engine will smoke heavily from the muf­

fler on startup.
Always be sure to retighten oil dipstick

before starting engine.

Reconnect spark plug wire to plug.

AIR FILTER
Your engine will not run properly and may

be damaged by using a dirty air filter.

Replace the air filter cartridge every 100

hours of operation or every season, which­
ever occurs first. Service air cleaner more
often under dusty conditions.

TO CLEAN AIR FILTER

1. Loosen screw and tilt cover to remove.

2. Carefully remove cartridge.
3. Clean by gently tapping on a flat sur­

face. If very dirty, replace cartridge.

ACAUTION: Petroleum solvents, such as

kerosene, are not to be used to clean car­

tridge. They may cause deterioration of the

cartridge. Do not oil cartridge. Do not use
pressurized air to clean or dry cartridge.

4. Install cartridge, then replace cover

making sure the tabs are aligned with

the slots in the back plate. Fasten
screw securely.

Back plate

MUFFLER

Inspect and replace corroded muffler as it

could create a fire hazard and/or damage.

SPARK PLUG

Replace spark plug at the beginning of

each mowing season or after every 100

hours of operation, whichever occurs

first. Spark plug type and gap setting

are shown in the “PRODUCT SPECIFIC­

ATIONS" section of this manual.

CLEANING

IMPORTANT: For best performance,
keep mower housing free of built-grass

and trash. Clean the underside of your

mower after each use.

ACAUTION: Disconnect spark plug wire
from spark plug and place wire where it

cannot come in contact with plug.
• Clean the underside of your lawn

mower 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 lawn mower unless the
electrical system, muffler, air filter and
carburetor are covered to keep water
out. Water in engine can result in short­
ened engine life.

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2/23/2007 10:59:50 AM

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