KS Motorcycles K-LIGHT125, Maintenance Manual

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Ignition timing
*Note
Check the ignition system when the ignition timing is
incorrect.
Rotate the flywheel counterclockwise with a special
wrench and No. 14 sleeve. When the intake valve rises
to the highest point, slowly rotate the flywheel so that
the T mark line on the flywheel is aligned with the
center line of the rocker arm shaft under the cylinder
body.
First adjust the clearance of exhaust valve with a
special wrench and a pincer pliers and lock the nut of
exhaust valve.Then adjust the intake valve clearance
and lock the intake valve nut.
Cylinder pressure
Warm up the engine.
Insert a pressure gauge.
Move the choke handle to the fully open position.
●Rotate the throttle handle to the fully open position,
and backflush to start the engine.
Cylinder pressure: 1 ~ 1.2mpa
*Note
Start the engine until the meter reading no longer rises.
Reasons for low pressure:
. Improper valve adjustment
. Valve leakage
. Wear of piston ring or cylinder
. Washer of cylinder head for damage
Reasons for high pressure:
.Reasons for high pressure
Turn off the engine and remove the spark plug/spark
plug cap
It should be conducted in the reverse order of
disassembly.
First adjust the exhaust valve gap using special tools and vice,
and then adjust intake valve gap
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