Honda GXV340 Operating And Maintenance Manual page 20

3. Spark plug service
Recommended spark plug:
BPR5ES (NGK)
To ensure proper engine operation, the spark plug must be
properly gapped and free of deposits.
1. Remove the spark plug cap and 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.
SPARK PLUG WRENCH
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.
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