9 - 2
TRBL
SHTG
INCORRECT ENGINE IDLING SPEED/POOR MEDIUM-AND-
HIGH-SPEED PERFORMANCE/FAULTY GEAR SHIFTING
EB901000
INCORRECT ENGINE IDLING SPEED
ENGINE
Cylinders and cylinder head
• Incorrect valve clearance
• Damaged valve train components
Air filter
• Clogged air filter element
FUEL SYSTEM
Carburetors
• Faulty starter plunger
• Loose or clogged pilot jet
• Loose or clogged pilot air jet
• Damaged or loose carburetor joint
• Incorrectly synchronized carburetors
• Incorrectly adjusted engine idling
speed (throttle stop screw)
• Incorrect throttle cable free play
• Flooded carburetor
ELECTRICAL SYSTEMS
Battery
• Faulty battery
• Discharged battery
Spark plugs
• Incorrect spark plug gap
• Incorrect spark plug heat range
• Fouled spark plug
• Worn or damaged electrode
• Worn or damaged insulator
• Faulty spark plug cap
Ignition coils
• Broken or shorted primary or second-
ary coils
• Faulty spark plug lead
• Damaged ignition coil
Ignition system
• Faulty ignitor unit
• Faulty pickup coil
EB902000
POOR MEDIUM-AND-HIGH-SPEED PERFORMANCE
Refer to “STARTING PROBLEMS”.
ENGINE
Air filter
• Clogged air filter element
FUEL SYSTEM
Carburetors
• Faulty diaphragm
• Incorrect fuel level
• Loose or clogged main jet
Fuel pump
• Faulty fuel pump
EB903000
FAULTY GEAR SHIFTING
SHIFTING IS DIFFICULT
Refer to “CLUTCH DRAGS”.
SHIFT PEDAL DOES NOT MOVE
Shift shaft
• Incorrectly adjusted shift rod
• Bent shift shaft.
Shift drum and shift forks
• Foreign object in a shift drum groove
• Seized shift fork
• Bent shift fork guide bar
Transmission
• Seized transmission gear
• Foreign object between transmission
gears
• Incorrectly assembled transmission
JUMPS OUT OF GEAR
Shift shaft
• Incorrect shift pedal position
• Incorrectly returned stopper lever
Shift forks
• Worn shift fork
Shift drum
• Incorrect axial play
• Worn shift drum groove
Transmission
• Worn gear dog
Содержание YZF-R1 1998
Страница 1: ...SERVICEMANUAL YZF R1 4XV1 AE1 98 ...
Страница 7: ...GEN INFO 1 ...
Страница 9: ...GEN INFO ...
Страница 18: ...SPEC 2 ...
Страница 20: ...SPEC ...
Страница 41: ...2 21 SPEC Crankcase tightening sequence TIGHTENING TORQUES ...
Страница 46: ...2 26 SPEC 1 Exhaust camshaft 2 Intake camshaft 3 Oil filter OIL FLOW DIAGRAMS ...
Страница 47: ...2 27 SPEC 1 Cylinder head 2 Crankshaft OIL FLOW DIAGRAMS ...
Страница 48: ...2 28 SPEC 1 Main axle 2 Oil delivery pipe 3 Drive axle OIL FLOW DIAGRAMS ...
Страница 50: ...2 30 SPEC 1 Thermostat housing 2 Water pump 3 Radiator 4 Radiator fan OIL FLOW DIAGRAMS ...
Страница 51: ...2 31 SPEC 1 Radiator cap 2 Thermostat 3 Thermostat housing 4 Water pump OIL FLOW DIAGRAMS ...
Страница 52: ...2 32 SPEC 1 Radiator 2 Thermo switch 3 Temperature sender OIL FLOW DIAGRAMS ...
Страница 64: ...2 44 SPEC ...
Страница 65: ...CHK ADJ 3 ...
Страница 128: ...3 61 CHK ADJ CHECKING AND CHARGING THE BATTERY Charging method using a variable voltage charger ...
Страница 129: ...3 62 CHK ADJ CHECKING AND CHARGING THE BATTERY Charging method using a constant voltage charger ...
Страница 134: ...ENG 4 ...
Страница 224: ...4 88 ENG ...
Страница 225: ...COOL 5 ...
Страница 227: ...COOL ...
Страница 245: ...5 18 COOL ...
Страница 246: ...CARB 6 ...
Страница 248: ...CARB ...
Страница 264: ...6 16 CARB ...
Страница 265: ...CHAS 7 ...
Страница 344: ...ELEC 8 ...
Страница 408: ...8 62 ELEC ...
Страница 409: ...TRBL SHTG 9 ...
Страница 417: ...9 6 TRBL SHTG ...