Use and Care Manual

LH400ATV-2B OWNER’S/OPERATOR’S MANUAL 08.0
17. TROUBLESHOOTING
17-5
POOR MEDIUM AND HIGH SPEED PERFORMANCE
Carburetor Air cleaner
Improperly adjusted fuel level Clogged air cleaner element
Clogged main nozzle
Clogged or loose pilot jet
POOR SPEED PERFORMANCE
Ignition system Compression system
Dirty spark plug Worn cylinder
Improper heat range Worn or seized piston ring
Faulty igniter unit Cylinder head gasket broken
Faulty pick up coil Cylinder gasket broken
Fuel system Carbon deposit buildup
Clogged fuel tank breather hole Improper adjusted valve
Clogged air cleaner element clearance
Clogged jet Improper contacted
Improperly adjusted fuel level valve and valve seat
Improper carburetor air vent hose Faulty valve timing
setting Clutch
Refer to “CLUTCH SLIPPING
/DRAGGING” section
Engine oil
Improper oil level(low or
over Oil level)
Ignition system
Faulty spark plug
Faulty high tension cord
Faulty ignitor unit
Faulty pick up coil
Faulty ignition coil
Valve system
Improperly adjusted valve
clearance