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9-2
POOR IDLE SPEED PERFORMANCE
TRBL
SHTG
IGNITION SYSTEM
Battery
S Improperly charged battery
S Faulty battery
Fuse
S Burnt out, improper connection
Spark plug
S Improper plug gap
S Worn electrodes
S Wire between terminals broken
S Improper heat range
S Worn electrodes
S Faulty spark plug cap
Ignition coil
S Broken or shorted primary/secondary coil
S Faulty high tension cord
S Broken ignitin coil body
Ignition system
S Faulty ignitor unit
S Faulty pick up coil
S Broken magneto woodruff key
Switch
S Faulty main switch
S Faulty “ENGINE STOP” switch
S Faulty front and/or rear brake switch
S Faulty sidestand switch
Wiring
S Loose battery terminal
S Loose coupler connection
S Improperly grounded
S Broken wireharness
YP901000
POOR IDLE SPEED PERFORMANCE
POOR IDLE SPEED PERFORMANCE
Carburetor
S Loose or clogged pilot jet
S Damaged carburetor joint
S Improperly tightened carburetor joint clamp
hose
S Improperly adjusted idle speed
(Pilot screw), (Throttle stop screw), (CO test)
S Improperly adjusted throttle cable
S Flooded carburetor
Auto choke
S Faulty starter plunger
S Improper wax operation
S Faulty ignitor unit
S Faulty P.T.C. thermister
Air cleaner
S Clogged air cleaner element
Ignition system
S Faulty spark plug
S Faulty high tension cord
S Faulty ignitor unit
S Faulty pick up coil
S Faulty ignition coil
Valve system
S Improperly adjusted valve clearance