10 - 1
TRBL
SHTG
STARTING FAILURE/HARD STARTING
TROUBLESHOOTINGN
OTE:
The following troubleshooting does not cover all the possible causes of trouble. It should be helpful,
however, as a guide to troubleshooting. Refer to the relative procedure in this manual for checking,
adjusting and replacing of parts.
STARTING FAILURE/HARD STARTING
FUEL SYSTEM
Fuel tank
●Empty
●Clogged fuel filter
●Clogged fuel strainer
●Clogged fuel breather hose
●Deteriorated or contaminated fuel
Fuel cock
●Clogged fuel hose
ELECTRICAL SYSTEM
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
●Faulty spark plug lead
●Broken body
CDI system
●Faulty CDI unit
●Faulty pickup coil
●Faulty charging/rotor rotation direction coil
●Broken woodruff key
Carburetor
●Deteriorated or contaminated fuel
●Clogged pilot jet
●Clogged pilot air passage
●Sucked-in air
●Deformed float
●Worn needle valve
●Improperly sealed valve seat
●Improperly adjusted fuel level
●Improperly set pilot jet
●Clogged starter jet
●Starter plunger malfunction
Air filter
●Clogged air filter element
Switches and wiring
●Faulty main switch
●Faulty engine stop switch
●Broken or shorted wiring
●Faulty neutral switch
●Faulty reverse switch
●Faulty start switch
●Faulty rear brake switch
Starter motor
●Faulty starter motor
●Faulty starter relay
●Faulty starter clutch