Honda Power Equipment HT-R3811 - page 44

3. Spark plug service.
Recommended spark plug: BPR5ES (NGK)
WlGEPR-U (ND)
To ensure proper engine operation, the spark plug must be properly gapped
and free of deposits.
1. Raise the rear body and remove the spark plug cap.
2. Clean any dirt from around the spark plug base.
3. Use a spark plug wrench to remove the spark plug.
SPARK
SPARK PLUG
WRENCH
4. 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.
5. Measure the plug gap with a feeler gauge.
The gap should be 0.7 - 0.8 mm (0.028 - 0.031 in). Correct as
necess;iry by carefully bending the side electrode.
0.7 - 0.8 mry
(0.028 - 0.031 in)
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