Table of Contents
Advertisement
EB900000
NOTE:
The follow ing guide for troubleshooting does not cover all the possible causes of trouble. It
should be helpful, how ever, as a guide to basic troubleshooting. Refer to the relative proce-
dure in this m anual for checks, adjustm ents, and replacem ent of parts.
STARTING PROBLEM S
ENGINE
Cylinders and cylinder head(-s)
• Loose spark plug
• Loose cylinder head
• Dam aged cylinder head gasket
• Worn or dam aged cylinder
• Incorrect valve clearance
• Incorrectly sealed valve
• Incorrect valve-to-valve-seat contact
• Incorrect valve tim ing
• Faulty valve spring
• Seized valve
Pistons and piston rings
• Incorrectly installed piston ring
• Dam aged, w orn or fatigued piston ring
• Seized piston ring
• Seized or dam aged piston
Air filter
• Incorrectly installed air filter
• Clogged air filter elem ent
Crankcase and crankshaft
• Incorrectly assem bled crankcase
• Seized crankshaft
ELECTRICAL SYSTEM S
Battery
• Faulty battery
• Discharged battery
Fuses
• Blow n, dam aged or incorrect fuse
• Incorrectly installed fuse
Spark plugs
• Incorrect spark plug gap
• Incorrect spark plug heat range
• Fouled spark plug
• Worn or dam aged electrode
• Worn or dam aged insulator
• Faulty spark plug cap
Ignition coils
• Dam aged ignition coil
• Broken or shorted prim ary or second-
ary coils
• Faulty spark plug lead
STARTING PROBLEM S
TROUBLESHOOTING
FUEL SYSTEM
Fuel tank
Fuel pump
Fuel cock
Carburetors
Ignition system
Sw itches and w iring
Starting system
9 - 1
• Em pty fuel tank
• Clogged fuel filter
• Clogged fuel tank breather hose
• Clogged rollover valve (California only)
• Clogged
rollover-valve-to-fuel-tank
hose (California only)
• Deteriorated or contam inated fuel
• Faulty fuel pum p
• Faulty fuel pum p relay
• Clogged or dam aged fuel hose
• Deteriorated or contam inated fuel
• Clogged pilot jet
• Clogged pilot air passage
• Sucked-in air
• Dam aged float
• Worn needle valve
• Incorrectly installed needle valve seat
• Incorrect fuel level
• Incorrectly installed pilot jet
• Clogged starter jet
• Faulty starter plunger
• Incorrectly adjusted starter cable
• Faulty ignitor unit
• Faulty pickup coil
• Faulty m ain sw itch
• Faulty engine stop sw itch
• Broken or shorted w iring
• Faulty neutral sw itch
• Faulty start sw itch
• Faulty sidestand sw itch
• Faulty clutch sw itch
• Incorrectly grounded circuit
• Loose connections
• Faulty starter m otor
• Faulty starter relay
• Faulty starting circuit cutoff relay
• Faulty starter clutch
TRBL
SHTG
Advertisement
Table of Contents
Troubleshooting
