These are the known mechanical and performance specifications for your 1983 Yamaha IT 490.
Basic Specs
Engine
Displacement487.00 ccm (29.72 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression4.9:1
Bore/Stroke87.0 x 82.0 mm (3.4 x 3.2 inches)
Valves/Cylinder
FuelingCarburettor. 38mm Mikuni
IgnitionCDI
Exhaust
Lubrication
CoolingAir
Performance
Horespower35.00 HP (25.5 kW)
Torque42.03 Nm (4.3 kgf-m or 31.0 ft.lbs)
Top Speed
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity13.60 litres (3.59 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front Suspension43mm Telescopic adjustable forks
Front Travel300 mm (11.8 inches)
Rear SuspensionMono shock, adjustable spring preload and rebound damping
Rear Travel300 mm (11.8 inches)
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight125.0 kg (275.6 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre
Rear Tire/Tyre150/80-18
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments