TROUBLE SHOOTING
8
9
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
ENGINE DOES
FUEL SYSTEM
Fill up fuel at mixture ration 25 gal : 1 two cycle oil
NOT START
• Empty fuel or shortage
1. Remove spark plug
• Wet spark plug due to too much
intake of fuel
2. Exhaust exceeded fuel by pulling recoil starter
handle 5-6 times
3. Install spark plug
4. Turn choke lever to open position and pull
recoil starter handle
• Bent or disconnection of fuel pipe
Repair
• Poor function of carburetor
• Air leak from carburetor
• Incorrect carburetor adjustment
• Bad diaphragm in carburetor
• Incorrect carburetor valve hinge height adjust.
ELECTRICAL SYSTEM
• Ignition stop switch in stop position
Turn to "on" position
• No spark
1. Bad connection/Ignition coil
2. Incorrect air gap/Ignition coil
3. Bad ignition coil
• Short circuit of stop switch lead wire Repair or replace
• Dirty plug
Clean up or replace
• Wider spark plug gap
Adjust correct gap to 0.6mm
• Poor connection of high voltage cord
in ignition with spark plug
Correct connection
ENGINE WILL
FUEL SYSTEM
STOP SOON
• Shortage of fuel
Fill up fuel at mixture ration 25 gal : 1 two cycle oil
AFTER STARTING
• Choke lever in closed position
Turn to "open" position
OR IS LIKELY
• Air goes through to fuel system
Check for cracks on pipe or connector and pipe
is securely fixed.
TO STOP
• Poor function of carburetor
• Air leak from carburetor
• Incorrect carburetor adjustment
• Bad diaphragm in carburetor
• Incorrect carburetor valve hinge height adjust.
ELECTRICAL SYSTEM
• Bad spark plug
Replace
• Bad ignition coil
Replace