Spark Plug Service - Honda HS621 Owner's Manual

Spark plug service
Recommended spark plug:
BPR5ES (NGK) W 1 GEPR-U (NIPPONDENSO)
mmm
If the engine has been running, the muffler will be very hot. Be careful not
to touch the muffler while it is hot.
.
To ensure proper engine operation, the spark plug must be properly
gapped and free of deposits.
1, Remove the spark plug cover then the spark plug cap.
2 Clean any dirt from around the spark plug base.
3. Use the wrench supplied in the tool kit to remove the spark plug.
SPARK PLUG WRENCH
4.lnspect the spark plug. Discard it if the electrodes are worn or if the
insulator is cracked or chipped. If it is to be reused, clean the electrode
and insulator with a wire brush.
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