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TROUBLESHOOTING
Possible cause Remedy
Insufficient power (Cont)
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 trimmer head Tighten firmly
Irregular vibration or trimmer head
spins with engine idling
Broken clutch spring, bent main
shaft
Contact Service Centre
Worn shaft bearings Contact Service Centre
Loose gear head Tighten bolt securely/Contact Service
Centre
If running difficulties continue, contact your closest Authorised Service Centre
Troubleshooting
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