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4. TROUBLE SHOOTING
Problem
Possible Cause
Solution
F a i l u r e t o
start
There is no fuel in tank
Add fuel in tank
Fuel filter obstructed
Clean fuel filter
Fuel is too dirty
Replace fuel
There is water in fuel
Too much fuel in cylinder
Take out spark plug and dry it
Mixture ratio is improper
Mix properly
Spark plug fouled with oily
deposits
Clean the oily deposits
Spark plug insulation damage
Replace spark plug
Spark gap is too large or
small
Adjust spark plug 0.6-0.7mm
High voltage wire breach or
break off
Replace or tighten
Coil looseness
Tighten coil
Piston ring /broken
Replace ring
Piston ring cementation
Eliminate deposit from ring
Spark plug loose
Tighten plug
Conjoint surface of the
cylinder and crank case leak
Eliminate
High voltage wire and spark
plug contact poor
Tighten the spark plug cap
Stop switch failure or short
circuit
Repair or replace