Honda EU65is Owner's Manual page 47

4.SPARK PLUG SERVICE
RECOMMENDED SPARK PLUG: BPR6ES (NGK)
To ensure proper engine operation, the spark plug must be properly
gapped and free of deposits.
1.Open the left maintenance cover.
2.Loosen the cover screw and remove the spark plug inspection cover.
SPARK PLUG
INSPECTION COVER
3.Disconnect the spark plug cap, and remove any dirt from around the
spark plug area.
4.Remove the spark plug with a spark plug wrench.
W20EPR-U (DENSO)
COVER SCREW
SPARK PLUG WRENCH
SPARK PLUG CAP
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