17. TROUBLESHOOTING
17-5
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
OVER HEATING OR OVER-COOLING
OVER HEATING OVER-COOLING
Summary of Contents for LH400ATV-2B
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