Loading ...
Loading ...
Loading ...
14 Section 6 — Maintenance
WARNING: If the engine has been running, the
muffler will be very hot. Be careful not to touch the
muffler.
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 electrode. See Figure 6-10. The gap
should be set to 0.024-0.031 in.
Electrode
0.024-0.031 in.
Figure 6-10
4. Check that the spark plug washer is in good condition
and thread the spark plug in by hand to prevent cross-
threading.
5. After the spark plug is seated, tighten with a spark plug
wrench to compress the washer.
NOTE: When installing a new spark plug, tighten 1/2 turn
after the spark plug seats to compress the washer. When
reinstalling a used spark plug, tighten 1/8-1/4 turn after the
spark plug seats to compress the washer.
IMPORTANT: The spark plug must be securely tightened.
An improperly tightened spark plug can become very hot
and may damage the engine.
Fuel Filter Service
The fuel filter cannot be cleaned and should be replaced every
100 operating hours; more often if run with old gasoline.
1. Remove all fuel from tank by running engine until it stops
from lack of fuel.
2. Use pliers to squeeze tabs on the clamps, then slide the
clamps away from the fuel filter. See Figure 6-11.
Fuel Filter
Fuel Line
Tab
Clamp
Figure 6-11
3. Twist and pull the fuel lines off of the fuel filter.
4. Replace with a new fuel filter.
5. Secure the fuel lines with the clamps.
LINE is extremely flammable and the vapors are explosive.
Clean Engine
If the engine has been running, allow it to cool for at least half
an hour before cleaning. Periodically remove dirt build-up from
Loading ...
Loading ...
Loading ...