11
SERVICE AND MAINTENANCE
2. Remove the paper element (c). To loosen debris, gently tap
the filter on a hard surface. If the filter is excessively dirty or
damaged, replace with a new filter.
3. Insert the cover’s bottom tabs into slots in bottom of base.
4. Tilt the cover up into place and secure with tabs.
Spark Plug Service
WARNING
If the engine has been running, the muffler will be very
hot. Allow engine and muffler to cool before performing
any maintenance.
WARNING
DO NOT check for spark with spark plug removed. DO NOT
crank engine with spark plug removed.
To ensure proper engine operation, the spark plug must be
properly gapped and free of deposits.
1. Remove the spark plug boot (a) and use a spark plug wrench
to remove the spark plug (b) (Figure 10).
a
b
Figure 10
2. Visually inspect the spark plug. Discard the spark plug if there
is apparent wear, or if the insulator is cracked or chipped.
Clean the spark plug with a wire brush if it is to be reused.
3. Measure the plug gap with a feeler gauge. Correct as
necessary by bending side electrode (c) (Figure 11). The gap
should be set to 0.030 in (0.76mm).
0.030 in.
0.76mm
c
Figure 11
2. Remove oil drain plug (a) and allow oil to drain into a suitable
container (Figure 8).
NOTE:
Select engines are equipped with an oil drain located on
the rear of the engine.
a
Figure 8
3. Reinstall the drain plug and tighten it securely.
4. Refill with the recommended oil and check the oil level. See
Oil Recommendations and Checking Oil Level/Adding Oil on
page 5.
5. Reinstall the oil fill cap securely.
IMPORTANT:
Used motor oil may cause skin cancer if repeatedly
left in contact with the skin for prolonged periods. Although this
is unlikely unless you handle used oil on a daily basis, it is still
advisable to thoroughly wash your hands with soap and water as
soon as possible after handling used oil.
NOTE:
Please dispose of used engine oil in a manner that is
compatible with the environment. We suggest you take it in
a sealed container to your local service station or auto parts
store for recycling. Do not throw it in the trash or pour it on the
ground.
Air Filter Service
WARNING
Never use gasoline or low flash point solvents for
cleaning the air filter element. A fire or explosion could
result.
Paper filters cannot be cleaned and must be replaced once a year
or every 100 operating hours; more often if used in extremely
dusty conditions.
IMPORTANT:
Never run the engine without the air filter. Rapid
engine wear will result.
1. Press down on the tabs (a) securing the air filter cover (b). Pull
back and remove the cover (Figure 9).
a
b
c
Figure 9
