User Guide

SPARK PLUG SERVICE
In order to service the spark plug, you will need a spark plug wrench
(commercially available).
Recommended spark plugs: ZGR5A (NGK)
J 16CR-U (DENSO)
I
To ensure proper engine operation, the spark plugs must be properly .
gapped and free of deposits.
If the engine has been running, the exhaust pipe and muffler will be
very hot. Be careful not to touch the exhaust pipe or muffler.
1. Remove the spark plug caps.
2. Clean any dirt from around the spark plug bases.
3. Use a spark plug wrench to remove the spark plugs.
4.Visually inspect the spark plugs. Discard them if the insulator is
cracked or chipped. Clean the spark plugs with
a wire brush if they
are to be reused.
I
5. Measure the plug gap with a feeler
gauge.
Correct as necessary by carefully
bending the side electrode.
The gap should be:
0.028-0.031 in (0.70-0.80 mm)
0.028-0.031 in
(0.70-0.80 mm)
46