KS Motorcycles K-LIGHT125, Maintenance Manual

Page: 22 / 278

Yes No
The electrode of spark plug is
wet
The electrode of spark plug is dry
Check the fuel injector for
overflow
Drip a small amount of gasoline in the cylinder
for trial start
1. Check the fuel injector Check whether air
filter is blocked
It may flame out after
a short-time operation
It can continue to
work after startup
The inner part of throttle
valve is blocked or the
float is too high
There is a fault in the
starter device of
throttle valve
1. Check for air leakage at
the joint outside the
engine
2. Check whether gas
distribution is conducted
in correct time
3. Check whether the valve
clearance is too small
4. Check whether the seal
between valve and valve
seat is good
5. Check whether the piston
ring is stuck in the ring
groove or in lack of
elasticity
6. Check the wear of piston
ring and cylinder
1. Check whether the
air hole at fuel tank
cover is blocked
2. Check whether fuel
filter and pump is
blocked
3. Check whether the
fuel pump is working
properly
Remove and check
the spark plug
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