Honda WD20X Owner's Manual page 21

3. Spark plug service
Recommended spark plug: BPRGES(NGK)
W2OEPR-U(NlPPONDENS0)
To ensure proper engine operation, the spark plug must be properly
gapped and free of deposits.
1. Remove the spark plug.
The muffler becomes very hot during operation and remains hot for a
while after stopping the engine. Be careful not to touch the muffler while
it is hot.
2. Visually inspect the spark plug. Discard it 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 the side electrode.
The gap should be:
0.70-0.80
mm (0.028-0.031 in)
0.7-0.8
mm
(0.028-0.031
in)
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