Spark plug service – HONDA EM3800SX User Manual
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Recommended spark plugs:
Spark Plug Service
The gap should be:
PLUG CAP
SPARK PLUG WRENCH
0.028
0.031 in
(0.70
0.80 mm)
In order to service the spark plug, you will need a spark plug wrench
(commercially available).
Use a spark plug wrench to remove the spark plug.
Remove the spark plug cap.
Clean any dirt from around the spark plug base.
If the engine has been running, the muffler will be very hot. Be careful
not to touch the muffler.
To ensure proper engine operation, the spark plug must be properly
gapped and free of deposits.
BPR5ES (NGK)
Measure the plug gap with a
feeler gauge.
Correct as necessary by carefully
bending the side electrode.
0.028
0.031 in (0.70
0.80 mm)
Visually inspect the spark plug.
Discard it if the insulator is
cracked, chipped or fouled.
W16EPR-U (DENSO)
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