Segment: Enduro/Offroad
Production years: 1983, 1984
2 Photos
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 | Gearbox: | 5-Speed | Clutch: | Wet multi-discs | Primary Drive: | - | Final Drive: | Chain |
|---|
| chassis specs | Frame: | Steel | 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): | - | Range: | - |
|---|