Operation Manual

SPARK PLUG SERVICE
Recommended spark plugs: BPR4HS (NGK)
To ensure proper engine operation, the spark plug must be properly gapped
and free of deposits.
If the engine has been running, the muffler will be very hot. Be careful not to
touch the muffler.
1.
2.
3.
4.
5.
Remove the spark plug cap.
Clean any dirt from around the spark plug base.
Use the
wrench supplied in the tool kit to remove the spark
plug.
PLUG
WRENCH
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.
Measure the spark plug electrode gap with a suitable gauge. The gap
should be 0.7 - 0.8 mm (0.028 - 0.031 in). Correct the gap, if necessary,
by carefully bendino the side electrode.
1t
0.7 - 0.8 mm (0.028 - 0.031 in)
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