KS Motorcycles K-LIGHT125, Руководство по обслуживанию

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Fault diagnostic procedure for poor idle speed of engine
Yes No Yes No
No Yes
Yes No
Yes No
The idle speed of engine
is poor
The idle speed of engine
is too high
Engine does not
have idle speed
The idle speed of
engine is instable
Check the compression
pressure of cylinder
Move the throttle valve with
hands, to check whether it has
been completely closed
Check whether engine ignition
is conducted in correct time
using ignition timing light
The compression pressure
of cylinder is insufficient
The compression pressure
of cylinder is normal
1. Check the joints
outside the engine for
air leakage
2. Check whether gas
distribution is
conducted in correct
time
3. Check whether the
valve clearance is too
small
4. Check whether the
leak tightness
between valve and
valve seat is good
5. Check whether the
piston ring is broken
or stuck in the ring
groove or in lack of
elasticity
6. Check the wear of
piston ring and
cylinder
Readjust the idle speed of
electronic fuel injector
Check
whether the
metering hole
of idle speed
is too large
Check whether the
steel wire rope of
throttle control
cable can be pulled
flexibly in the
cable jacket and
whether the throttle
spring is too soft
1. Check whether there is
fault in the ECU
ignition device
2. Check whether the
alternator flywheel and
trigger coil are
loosened
Engine has idle
speed after
adjustment
Engine still does
not have idle speed
after adjustment
Air adjusting screw
or adjusting screw
of throttle is not
adjusted properly
Check whether the airway
of throttle is blocked
Clean and
dredge
Check whether throttle opening is
too large
Adjust the throttle
valve opening to
the standard value
1. Check the heat insulator of throttle valve
for cracks
2. Check whether the mounting nut connected
to the throttle valve is loosened
3. Check fuel pump
4. Check reed valve for air leakage
Adjustable
electrode gap
Check the mixing
ratio of combustible
mixture
Check
whether
the spark
plug
clearance
is too
small
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