18
2 stroke
Problem
Possible cause
Remedy
Improper fuel mixing ratio
Replace with correct 25:1 fuel mix
Machine is overworked
Operate properly – do not
overload
Fan cover, cylinder fins, etc. dirty
Clean and remove dirt and debris
Engine makes knocking noise
Cylinder overheating
Clean fins
Use of incorrect fuel
Replace with correct fuel
Poor acceleration
Fuel filter clogged
Contact Service Centre
Fuel system clogged
Excessively low idle
Speed up idle/Contact Service
Centre
Excessively lean carburettor
setting
Contact Service Centre
Clogged air filter
Clean filter
Air leakage
Loose carburettor
Contact Service Centre
Loose fuel pick up tube
Insert firmly/Contact Service
Centre
Engine stops during operation
Switch is bumped
Keep hands clear of switch
Engine stops abruptly
Shorting of spark plug
Clean spark plug
Piston scored, ignition failure
Contact Service Centre
Miscellaneous
Fuel tank empty
Refuel
Carburettor or fuel tank clogged
Contact Service Centre
Engine is difficult to shut off
Overheated engine
Run at idle
Overheating or electrical fault
Overheated spark plug
Clean and adjust gap to 0.7mm
(0.25")
Defective kill switch
Contact Service Centre
Poor contact of ground wire
Contact Service Centre
Unit main body
Loose impeller
Contact Service Centre
Irregular vibration
Broken clutch spring, bent main
shaft
Contact Service Centre
Worn shaft bearings
Contact Service Centre
Damaged impeller
Contact Service Centre
Troubleshooting
Not
for
Reproduction
