Changing EngineOil
NOTE: Check the oil level before each use and after every five
hours of operation to be sure the correct oil level is maintained.
Refer to Checking Oil Level in the Operation Section
1. Drain fuel from the tank by running the engine until the
fuel tank is empty. Be sure the fuel fill cap is secure.
2. Place a suitable oil collection container under the oil drain
plug.
3. Remove the oil drain plug, Figure 7-2.
4_
5_
6.
Figure 7-2
Tip the engine to drain oil into the container. Used oil must
be disposed of at a proper collection center.
Reinstall the drain plug and tighten it securely.
Refill with the recommended oil and check the oil level,
refer to Assembly & Set-Up Section for instructions.
Reinstall the oil filler cap/dipstick securely.
CAUTION: Thoroughly wash your hands with soap
and water as soon as possible after handling
used oil.
NOTE: Pleasedispose of used motor oil in a manner that is
friendly to the environment. Takeit to a recycling center or other
collection center.
SparkPlug
/1_ WARNING! DO NOT check for a spark with the
spark plug removed. DO NOT crank the engine with
the spark plug removed.
ii1_ WARNING! If the engine has been running, the
muffler will be very hot. Be careful not to touch the
muffler.
To ensure proper engine operation, the spark plug must be
properly gapped and free of deposits.
1. Remove the spark plug boot and use a spark plug wrench
to remove the plug, Fig. 7-3.
k,. Spark Plug Boot
J
Figure 7-3
2_
Visually inspect the spark plug. Discard the spark plug if
there is any 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_
F
Measure the plug gap with a feeler gauge. Correct as
necessary by bending the side electrode, Fig. 7-4. The gap
should be set to .02-.03 inches (0.60-0.80 mm).
Electrode
.02=.03 in.
(0.60=0.80 ram)
Figure 7-4
4_
Check that the spark plug washer is in good condition
and thread the spark plug in by hand to prevent cross-
threading.
SECTION7 -- ENGINEMAINTENANCE 17
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