Specifications

13.4 LOSS POWER
RAISE WHEELS OFF GROUND DOES NOT SPIN FREELY
AND SPIN BY HAND
SPIN FREELY
PESSURE LOW CHECK TIRE
POSSIBLE REASON
★ Brake dragging
★ Drive chain too tight
★ Damaged wheel bearing
★ Wheel bearing needs lubrication
★ Punctured tire
★ Faulty tire valve
★ Fuel / air mixture ratio too rich or lean
★ Clogged in air cleaner
★ Clogged in muffler
★ Restricted fuel flow
★ Clogged fuel tank cap breather hole
★ Faulty pulse generator
★ Faulty CDI unit
★ Leaking head gasket
★ Worn cylinder and piston rings
★ Clean
★ Clean the spark plug
★ Spark plug is incorrect heat range
★ Excessive carbon deposited in
Combustion chamber
★ Wrong type of fuel
★ Fuel / air mixture ratio is lean
★ Use of poor quality fuel
★ worn piston and cylinder
★ Fuel / air mixture ratio is lean
★ Wrong type of fuel
★ Ignition timing too advanced
★ Excessive carbon deposited in
Combustion chamber
OVERHEATING
FOULED OR DISCOLOED
O.K.
O.K.
N
.G.
ENGINE SPEED INCREASE
ENGINE SPEED DOES
N
OT INCREASE
ACCELERATE OR RUN
AT HIGH SPEED
CHECK FOR ENGINE
OVERHEATING
CHECK SPARK PLUG
TEST CYLINDER COMPRESSION
CLOGGED
O.K.
TOO LOW
O.K.
CHECK CARBURETOR
C
HE
C
K I
G
NITI
O
N TIMIN
G
C
HE
C
K TIRE PRE
SSU
RE
PRESSURE NORMAL
ACCELERATE LIGHTY
O.K.
KNOCKS