Engine Running Unsmoothly (Low Speed And Idling) - PGO G-MAX 50 Service Manual

3.Engine running unsmoothly (low speed and idling)

Check and adjust
Check ignition timing
Adjust carburetor air screw
Check if there is air
Leakage on carburetor
gasket
Remove spark plug, insert
To spark plug cover and
Connect with ground
Start engine, then check
The sparking
Good sparking
Check generator
good
△
Trouble condition
Correct Not correct
Good Faulty
adjustment Not correct
No leakage
Sparking abnormal
Or no sparking
fault
The reason
heat protector gasket broke
leakage
A.C. generator malfanction
CDI faulty
AC generator faulty
mixture too thick
( loose the screw)
mixture too lean
( tight the screw)
carburetor locking nut loosen
gasket crack
hose leakage
Intake manifold gasket broken
Carburetor O ring distorted
spark plug dirty
CDI out of order
AC magnet abnormal
ignition coil faulty
H.V. coil disconnect or
short circuit
main switch is abnormal
hose is damaged
air pipe is blocked or
damaged