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TROUBLE SHOOTING
1) ENGINE DOES NOT START
Description Cause Countermeasure
No spark in the spark plug
Spark Plug 1. Wet spark plug electrodes Make them dry
2. Carbon deposited on the electrodes Cleaning
3. Insulation failure by insulator damage Exchange
4. Inproper spark gap Adjust to 0.6~0.7mm
5. Burn out of electrodes Exchange
Magneto 1. Ignition coil inside failure Exchange
2. Damaged cable sheath or disconnected cable Exchange or repair
Switch 1. Switch is OFF ON the switch
2. Switch failure Exchange
3.Primary wiring earthed Repair
Sparks appear in the spark plug
Compression & 1. Over sucking of fuel Drain excess fuel
fueling is normal 2. Too rich fuel Adjust carburetor
3. Overflow Carburetor adjust or exchange
4. Clogging of air cleaner Wash with mixed gasoline
5. Faulty fuel Change with proper fuel
Fueling normal but 1. Worn out cylinder, piston, or piston ring Exchange
poor compression 2. Gas leakage from cylinder and crank case gasket Apply liquid gasket and reassemble.
No fuel supply 1. Choked breather air hole Cleaning
2. Clogged carburetor Cleaning
3. Clogged fuel filter Exchange fuel filter