Operators Manual

English - 65
Troubleshooting
8.1 Engine does not start
Remove the spark plug from the cylinder, and holding the cylinder, pull the recoil starter and check
whether any sparks appear between the spark plug electrodes.
Symptom/Category Cause Action
There are no sparks at the spark plug
Spark plug
1. The spark plug electrodes are wet Dry them
2. Carbon has built up on the spark plug
electrodes
Remove the carbon or replace
with a new one.
3. Insulation is poor due to cracks, etc. on
the spark plug insulator
Replace with a new one.
4. The gap between the spark plug electro-
des is excessively small or large
BPMR8Y: Adjust to 0.65 mm
Magneto
1. Poor coil insulation Replace
2. The cable trunking has been damaged or
the cable is broken
Repair or replace
3. Poor air gap between the rotor and coil
Adjust to 0.3 mm
4. Damage to the plug and gap spring Replace
Switch
1. The switch is OFF
Set the switch to “RUN”
2. The switch is faulty Replace
3. The primary wire is earthed Repair or replace
There are sparks at the spark plug
Compression is
good and fuel flows
1. Excessive fuel intake Discharge the excess gas
2. Fuel is too thick Repair or replace the carbu-
retor
3. Overflow Adjust or replace the carbure-
tor
4. The air cleaner is soiled Clean in a gasoline mixture
and dry thoroughly
5. Poor quality fuel is being used Replace with good quality fuel
Fuel flows, but
compression is poor
1. The spark plug is loose Tighten
2. Wear or damage to the cylinder, piston,
piston
Replace
3. Gas is leaking from around the cylinder
and crankcase
Replace gasket with new one
and re-assemble
No fuel flows
1. Poor carburetor adjustment Adjust
2. Blockage inside the carburetor Clean
3. Blockage in the fuel filter Clean or replace the fuel filter
4. Fuel hose damage or blockage Adjust
8 Troubleshooting