Technical data

18.TROUBLESHOOTING
18-1 Engine Can Not Work
18.2 Poor Performance At Low And Idle Speeds
18.3 Poor Performance At High Speed
18.4 Loss Power
18.5 Poor Handling
18-1 Engine Can Not Work
Possibility
Ϫ No fuel In fuel tank
Ϫ Clogged float valve
Ϫ Clogged fuel tank cap breather hole
Ϫ Clogged at fuel tube
Ϫ Faulty spark plug
Ϫ Fouled spark plug
Ϫ Faulty CDI unit
Ϫ Faulty alternator
Ϫ Faulty engine stop switch
Ϫ Poorly connected ,broken or shorted wires
Ϫ Broken or shorted ignition coil
Ϫ Broken or shorted spark plug wire
Ϫ Faulty pulse generator
Ϫ Faulty ignition switch
Ϫ Worn cylinder and piston rings
Ϫʳ Damaged cylinder head gasket
Ϫ Auto choke off or damaged
Ϫ Auto choke power wire disconnected
Ϫ Improperly adjusted air screw
Ϫ Improperly ignition timing
Ϫ Fuel / air mixture ratio is too lean
Ϫ Carburetor flooded
Ϫ Improperly adjusted air screw
Ϫ Fuel / air mixture ratio too rich
Ϫ Auto choke stuck or damaged
Ϫ Air cleaner dirty
C
HE
C
K F
U
EL FL
OW
T
OC
ARB
U
RET
O
R
SPARK TEST
TE
S
T
C
YLINDER
CO
MPRE
SS
I
O
N
N.G.
N.G.
N.G.
O.K.
O.K.
WEEK OR NO SPARK
LOW COMPRESSION
S
TART THE EN
G
IN
G
ENGINE START BUT STOPS
O.K.
REMOVE AND INSPECT SPARK PLUG
ENGINE DOES NOT FIRE
WET PLUG