Coolster CHALLENGER GK-6125A 2018, Manual, Page: 27 / 45

P25
Spark Plug Inspec�on
1. Remove the spark plug and inspect it each �me you change
the oil. The electrodes should be kept clean and free of carbon.
The presence of carbon or excess oil will greatly reduce engine
performance. If possible. check the spark plug gap using a wire
feeler gauge. This specifica�on is 0.6 ~ 0.7 mm.
2. Before installing the spak plug, coat the threads lightly with
graphite grease if possible, to ensure easy removal next �me the
spark plug needs inspec�on.
3. It is advisable to replace the spark plug at least once a year to
ensure easy star�ng and good engine performance
Note: If you have not installed when the spark plug torque
wrench, torque correct es�ma�on method is �ghtening its hand
to exceed 1 / 4 to 1 / 2 laps
0.6-0.7mm
Model: D7TC
Electrode Clearance: 0.6 ~ 0.7 mm
Torque: 12.5 N • M
Gearshi� cable adjustment
Handle stall leeway should be 2 to 5 mm
1. pinch-locking nut
2. rotate length of cable and fasten screw to the appropriate
area.
3. fastening the lock nut.
If you have trouble adjus�ng, please visit your local Coolster
dealer or repair shop.