Honda GX240 Owner's Manual page 28

4. Spark plug service
Recommended spark plug: GX240 BPRGES (NGK)
W20EPR-U (ND)
'GX340 BPGES-11, BPRGES-1 1 (NGK)
W20EPU11, WZOEPR-Ul 1 (ND)
CAUTION: Use only the recommended spark plugs or equivalent. Spark
plugs which have an improper heat range may cause engine damage.
To ensure proper engine operation, the spark plug must be properly gap-
'ped and free of deposits.
1. Remove the spark plug cap, and use a spark plug wrench to remove the
plug.
m If the engine'has been running, the-muffler will be very hot. Be
careful not to touch the muffler.
2.
3.
Visually inspect the spark plug. Discard it if the insulator is cracked or
chipped. Clean the sp,ark plug with a wire brush if it is to be reused.
Measure the plug,gap with a feeler gauge. The gap should be 0.7-0.8
mm (0.028-0.03.1 in) for the GX240, and 1 .O- 1 .l mm (0.039-
0.043 in) for the GX340.
/
->
GX240
0.7-0.8 mm
(0.028-0.031 in)
GX340
lll,,ll,,,,,li,l,,
e
1.0-1.1 mm
-
(0.039-0.043 in)
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