Segment: Enduro/Offroad
Production years: 1983, 1984

YAMAHA IT 490 1983-1984 2 Photos
YAMAHA IT 490 (1983-1984)YAMAHA IT 490 (1983-1984)

The big news in the powerplant is the bump in displacement from 465 to 487cc, accomplished simply by increasing the cylinder bore two millimeters. This follows the large, seven-millimeter increase in stroke which boosted the IT's displacement from 425 to 465cc in 1981. Aside from the trendiness involved in increasing their open-classers' engine sizes, most manufacturers are nudging 500cc because more displacement is the most straightforward route to better power.

YAMAHA IT 490 1983-1984

YAMAHA IT 490 490

engine specs
Type:Two stroke, single cylinder, read valve, air cooled
Displacement:490 cm3
Bore X Stroke:3.4x3.2 in OR 86 mm
Compression Ratio:4.9:1
Horsepower:35/6000 KW(hp)/RPM
Torque:31/5500 lb-ft/RPM OR 42/5500 Nm/RPM
Fuel System:VM38SS Mikuni carburetor
transmission specs
Clutch:Wet multi-discs
Primary Drive:-
Final Drive:Chain
chassis specs
Front Suspension:43mm Telescopic adjustable forks
Rear Suspension:Mono shock, adjustable spring preload and rebound damping
Front Brake:Drum
Rear Brake:Drum
dimension specs
Overall Length:-
Overall Width:-
Seat Height:37.2 in OR 945 mm
Weelbase:56.5 in OR 1435 mm
Ground Clearance:13.1 in OR 333 mm
Weight:271 lbs OR 123 kg
Fuel Capacity:3.6 gallons OR 13.6 L
tyres specs
Front:3.00 -21
Rear:150/80 -18
power system specs
Power pack:-
Nominal Capacity:-
Maximum Capacity:-
Charger type:-
Charging time (normal):-
Charging time (quick):-
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