SPARK PLUG
Recommended plugs:
Standard:A7RTC(ST50-11)
CR6HSA(ST125-11)
For most riding conditions this spark plug heat
range number is satisfactory. However, if the
motorcycle is going to be operated for extended
periods at high speeds or near maximum power
in hot climates, the spark plug should be changed
to a colder heat range(a higher number).
Never use a spark plug with an improper heat
range.Severe engine damage could result.
1.Disconnect the spark plug cap.
2.Clean any dirt from around the spark plug base.
3.Remove the spark plug.
4.Usually inspect the spark plug electrodes for
wear, The center electrode should have square
edges and the side electrode should not be
eroded.
5.Discard the spark plug if there in apparent wear
or if the insulator is cracked or chipped.
NOTICE
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6.Check the spark plug gap(1)using a wire-type
feeler gauge. if adjustment is necessary,bend the
side electrode(2)carefully.
The gap should be:
0.6-0.7mm(0.02-0.03in)
7.Make sure the plug washer is in good condition.
8.With the plug washer attached, thread the spark
plug in by hand to prevent cross-threading.
9.Tighten a new spark plug1/2turn with a spark
plug wrench to compress the washer.If you are
reusing a plug, it should only take 1/8-1/4 turn
after the plug seats.
(1)Spark plug gap
(2)Side electrode
NOTICE
The spark plug must be securely tightened.An
improperly tightened plug can become very hot
and possibly damage the engine.
10.Reinstall the spark plug cap.
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