TROUBLE
Spark plug
No flash
Magneto
Compression ratio and
fueling well
F u e l i n g w e l l b u t
Normal
compression ratio bad.
Carburetor not fueling
(2)Engine lacks power
TROUBLE
The compression ratio is fine
Engine overheats
Engine noisy or knocking
(3)Engine stops while running
TROUBLE
Engine stops suddenly
The engine stops slowly
CAUSE
1.Poles wet
2.Covered with carbon
3.The insulation damaged
4.Spark gap incorrect
5.The poles burned
1.The wrap of wire damaged.
2.Insulation of coil bad
3.The wire of coil broken.
4.The electronic firing unit defective
1.Too much fuel in cylinder
2.Water or dirt in fuel
1.Cylinder and piston ring wore or tore
2.The plug loose
1.No fuel in tank
2.Fileter gauze clogged
3.The air hole of the tank clogged
CAUSE
1. The filter plate clogged
2 . A i r p a s s e s t h r o u g h t h e
connection of carburetor
3.Engine overheat
4.Water in fuel
5.The carbon clogs muffler
1.Mixed gas (fuel) thin
2.Cylinder covered with carbon
3.Oil bad
4.No connection with hose
1.Fuel bad
2.Carbon in cylinder
3.The running parts wore and
tore.
CAUSE
1.The lead wire of plug loose
2.Piston bitten
3.Plug covered with carbon
4.Fuel used up
1.Carburetter clogged
2.The air hole in the tank clogged
3.Water in fuel
-11-
Clean the carbon
Adjust 0.6~0.7mm
Remedy or replace
Replace them
REMEDY
Clean
Tighten
Stop the engine and cool it
Refill with fresh fuel
Clean
Adjust the carburetor.
Clean
Use 2-T engine oil and adjust the
mix ration.
Correctly assemble the machine
Replace
Clean
Check and replace
REMEDY
Replace firmly
Change or remedy
Clean plug
Fill the fuel tank
Clean
Clean
Refill with fresh fuel
REMEDY
Dry it
Replace
Replace
Replace
Replace
Replace
Drain
Replace
Tighten it
Fuel
Clean
Clean