Troubleshooting; Poor Idle Speed Performance; Air Cleaner; Wiring - Linhai LH400ATV-2B Owner's/Operator's Manual

17. TROUBLESHOOTING

Improperly charged battery
Faulty battery
Fuse
Burnt out, improper connection
Spark plug
Improper plug gap
Worn electrodes
Wire between terminals broken
Improper heat range
Faulty spark plug cap
Ignition coil
Broken or shorted primary/
secondary coil
Faulty high tension cord
Broken ignition coil body

POOR IDLE SPEED PERFORMANCE

Carburetor
Loose or clogged pilot jet
Damaged carburetor joint
Improperly tightened carburetor
joint clamp hose

Improperly adjusted idle speed
(Pilot screw), (Throttle stop screw)
Improperly adjusted throttle cable Faulty ignition coil
Flooded carburetor
POOR MEDIUM AND HIGH SPEED PERFORMANCE
Carburetor
Faulty ignitor unit
Faulty pick up coil
Broken magneto
woodruff key
Switch
Faulty main switch
Faulty "ENGINE STOP"
switch
Faulty brake switch

Wiring

Loose battery terminal
Loose coupler connection
Improperly grounded
Broken wireharness

Air cleaner

Clogged air cleaner element
Ignition system
Faulty spark plug
Faulty high tension cord
Faulty ignitor unit
Faulty pick up coil
Valve system
Improperly adjusted
valve clearance
Air cleaner
17-4