Troubleshooting - Yamaha FZS600'98 Service Manual

EB900000
NOTE:
The following guide for troubleshooting does not cover all the possible causes of problems.
It should be helpful, however, as a guide to troubleshooting. Refer to the relative procedure in this
manual for inspection, adjustment and replacement of parts.
STARTING FAILURE/HARD STARTING
FUEL SYSTEM
Fuel tank
S Empty
S Clogged fuel filter
S Clogged fuel strainer
S Clogged fuel tank drain hose
S Clogged roll-over valve
S Clogged roll-over valve breather hose
S Deteriorated or contaminated fuel
Fuel cock
S Clogged fuel hose
ELECTRICAL SYSTEM
Spark plug
S Improper plug gap
S Worn electrodes
S Wire between terminals severed
S Improper heat range
S Faulty spark plug cap
Ignition coil
S Faulty spark plug lead
S Broken body
Full-transistor system
S Faulty ignitor unit
S Faulty pickup coil
STARTING FAILURE/HARD STARTING

TROUBLESHOOTING

Carburetor
S Deteriorated or contaminated fuel
S Clogged pilot jet
S Clogged pilot air passage
S Sucked-in air
S Deformed float
S Worn needle valve
S Improperly sealed valve seat
S Improperly adjusted fuel level
S Improperly set pilot jet
S Clogged starter jet
S Faulty starter plunger
S Improperly adjusted starter cable
Air filter
S Clogged air filter element
Fuel pump
S Faulty fuel pump
S Faulty fuel pump relay
Switch and wiring
S Faulty main switch
S Faulty engine stop switch
S Broken or shorted wiring
S Faulty neutral switch
S Faulty start switch
S Faulty sidestand switch
S Faulty clutch switch
Starter motor
S Faulty starter motor
S Faulty starter relay
S Faulty circuit cut-off relay
S Faulty starter clutch
9-1
TRBL
SHTG