Inspection/Adjustment - SANYANG INDUSTRY CO. XS125-K Service Manual

1.GENERAL INFORMATION
Torque specifications listed below for respective locations.
TROUBLE SHOOTING
A. HARD START OR CANNOT START
symptom
enough gasoline supplied
for carbuertor
spark plug jump
normal compression
engine dose not fire
spark plug dry
start engine with choke closed
1-4
inspection adjustment
loosen carburetor drain
screw, check inner side for
gasoline
no gasoline supplied
for carburetor
remove spark plug,insert it
into plug cap, check the
spark by touching engine
grid
spark weak or no spark
test cylinder
compression
pressure too low or no
pressure
follow the starter
keypoints to re-start
engine knocks, but no
starting
remove and check the
spark plug again
spark plug wet
cause
no gasoline in the tank
fuel tube between gasoline tank and
carburetor clogged.
float chamber fuel tube clogged
gasoline cover air hole clogged
fuel filter clogged
fuel filter screen clogged
gasoline auto fuel cup faulty
spark plug faulty
fouled spark plug
CDI unit fualty
pulse coil faulty
high voltage coil cable open or
short
high voltage coil open or short
main switch faulty
A.C.G. faulty
Battery faulty
valve too tight, no gap
valve seat faulty
cylinder, piston, piston ring
faulty
cylinder gasket leak
valve burnt out
valve timing faulty
crankcase leak when wmpress
Fuel tube clogged
muffler clogged
auto air cut poor action
inlet duct has air in
ignition timing incorrect
carburetor fuel adjusting
screw set faulty
air cleaner clogged
carburetor fuel level too high
auto air cut poor action
throttle excessively