1989 Yamaha YZ 490 specifications.

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Engine and transmission 1989 Yamaha YZ 490
Engine type:
1 cylinders, Single
Displacement:
487 cc (29.76 cubic inches)
Bore × stroke:
87 mm × 82 mm (oversquare - shortstroke)
Throttle:
Cable operated
Valves:
Valves per cylinder:
4
Fuel and ignition:
Sparks per cylinder:
1
Fuel supply system:
Carburetor
Ignition type:
Digital CDI
Engine mounting:
Vertical
Lubrication system:
Wet sump
Gear box:
Manual
Clutch:
Wet, multiple discs, cable operated
Final drive:
Chain
Spark plug pipe type:
NGK, B8EG
Starter:
Electric
Chassis and suspension 1989 Yamaha YZ 490
Frame type:
steel, Single cradle frame
Front:
Suspension:
Cartridge
Tire:
80 / 100 R21 M
Tire pressure:
1 bar
Rear:
Suspension:
mono shock, Swingarm
Brake:
Drum
Tire:
110 / 100 R18 M
Tire pressure:
1 bar
Other 1989 Yamaha YZ 490
ABS available:
No
Number of riders:
2 persons