Eton ATV8F - Loss Power Diagnosis

18-4 Loss Power
RAISE WHEELS OFF GROUND DOES NOT SPIN FREELY
AND SPIN BY HAND
SPIN FREELY
PESSURE LOW CHECK
TIRE
Possibility
★ 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
C
HE
C
K TIRE PRE
SSU
RE
ACCELERATE LIGHTY
C
HE
C
K I
G
NITI
O
N TIMIN
G
TEST CYLINDER COMPRESSION
CHECK CARBURETOR
CHECK SPARK PLUG
CHECK FOR ENGINE
OVERHEATING
ACCELERATE OR RUN
AT HIGH SPEED
PRESSURE NORMAL
ENGINE SPEED DOES
NOT INCREASE
ENGINE SPEED INCREASE
N.G.
O.K.
TOO LOW
O.K.
CLOGGED
O.K.
O.K.
O.K.
FOULED OR DISCOLOED
OVERHEATING
KNOCKS