Electrical Systems; Incorrect Engine Idling Speed; Engine; Fuel System - Yamaha XVZ13TF 1999 Service Manual

ELECTRICAL SYSTEMS

Battery
S Improperly charged battery
S Faulty battery
Fuse(-s)
S Blown, damaged or incorrect fuse
S Improperly installed fuse
Spark plug(-s)
S Incorrect spark plug gap
S Incorrect spark plug heat range
S Fouled spark plug
S Worn or damaged electrode
S Worn or damaged insulator
S Faulty spark plug cap
Starting system
S Faulty starter motor
S Faulty starter relay
S Faulty starting circuit cut-off relay
S Faulty starter clutch
EAS00846

INCORRECT ENGINE IDLING SPEED

ENGINE

Cylinder(-s) and cylinder head(-s)
S Incorrect valve clearance
S Damaged valve train components
Air filter
S Clogged air filter element

FUEL SYSTEM

Carburetor(-s)
S Faulty starter plunger
S Loose or clogged pilot jet
S Loose or clogged pilot air jet
S Damaged or loose carburetor joint
S Improperly synchronized carburetors
S Improperly adjusted engine idling speed
(throttle stop screw)
S Improper throttle cable free play (at the flange
of the throttle grip)
S Flooded carburetor
S Faulty air induction system
TROUBLESHOOTING
Ignition system
S Faulty ignitor unit
S Faulty pickup coil
S Broken generator rotor woodruff key
S Switches 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
S Improperly grounded circuit
S Loose connections
Ignition coil(-s)
S Cracked or broken ignition coil
S Broken or shorted primary or secondary coils
S Faulty spark plug lead
ELECTRICAL SYSTEMS
Battery
S Improperly charged battery
S Faulty battery
S Spark plug(-s)
S Incorrect spark plug gap
S Incorrect spark plug heat range
S Fouled spark plug
S Worn or damaged electrode
S Worn or damaged insulator
S Faulty spark plug cap
Ignition coil(s)
S Broken or shorted primary or secondary coils
S Faulty spark plug lead
S Cracked or broken ignition coil
Ignition system
S Faulty ignitor unit
S Faulty pickup coil
S Broken generator rotor woodruff key
9-2
TRBL
SHTG