Operation Manual

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2. Remove the spark plug cap. Remove any dirt from around the spark plug
area.
3. Use the proper size spark plug wrench to remove the spark plug.
If the engine has been running, the muffler will be very hot. Be careful
not to touch the muffler.
4. 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.
5. Measure the plug gap with a feeler gauge. Correct as necessary by
bending the side electrode.
The gap should be:
0.6 – 0.7 mm (0.024 – 0.028 in)
6. Check that the sealing washer is in good condition, and thread the spark
plug in by hand to prevent cross-threading.
SPARK PLUG
SPARK PLUG CAP
SIDE ELECTRODE
0.6 – 0.7 mm
(0.024 – 0.028 in)
SEALING WASHER