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Service Spark Plug
1) Remove the spark plug and inspect it each time you
change the oil. (use a spark plug wrench). The
electrodes should be kept clean and free of carbon. The
presence of the carbon or excess oil will greatly reduce
proper engine performance. If possible, check the spark
plug gap (area between the electrodes) using a wire
feeler gauge. This specification is0.7‐0.8mm.
2) Before installing spark plug, coat threads lightly with
graphite grease if possible to ensure easy removal next
time the spark plug needsinspection.
3) Itisadvisabletoreplacethesparkplugatleastoncea
year to insure easy starting and good engine
performance.
Chain Lubrication
To increase the chain life, it should be lubricated with a
spray on type chain lubricant.
Chain Adjustment
Check the chain adjustment after the first two hours of use.
Readjust if it has more than 1/2” flex.
1) Loose Nut#1
2) Adjust Nut #2. Turn Nut #2 clockwise in 1/2 turn
increments, then turn Nut #1 until tight. Follow this
procedure until chain is at propertension.
Repeat the above two steps until chain is adjusted to the
desired fit.
Adjustment of Front and Rear Shocks
There are five adjustable positions on each shock. The
default position is in the middle set by the manufacturer.
Use a round nut wrench as you adjust the shock, the tension
of the shock spring will increase as you screw to the left,
decrease as you screw to the right. Adjust accordingly to the
weight and riders.
Summary of Contents for CHALLENGER150
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