| Yamaha YZ490 | |
| Manufacturer | |
|---|---|
| Production | 82-90 |
| Class | Motorcross |
| Predecessor | Yamaha YZ465 |
| Engine | 490 |
| Top Speed | 88 mph |
| Spark Plug | NGK B9EG '82 , '83-85 , '86-87 NGK B8EG '88-90 |
| Front Tire | 3.00-21 '82 80/100-21 '86-87 , '88-90 100/90-21 '83-85 |
| Rear Tire | 140/80-18 '83-85 110/100-18 '88-90 140/90-18 '82 80/100-18 '86-87 |
| Weight | |
| Recommended Oil | Yamalube 10w-40 |
| Related | Yamaha IT490 |
| Manuals | Service Manual |
The Yamaha YZ490 is a motorcycle produced by Yamaha from 1982 to 1990.
Yamaha introduced the YZ 490 in 1982, after a solid run with the YZ465.
Problems[edit]
Sadly, the 490 was heavier than the 465, nowhere near as reliable, horribly difficult to start (hot or cold), came with a grim suspension, vibrated enough to bring blisters to your hands and was impossible to jet.
1982 Yamaha YZ80 - Photos, Specs, and Reviews. Lots of power this my first dirt bike. Threw me on my butt 2 times wheelie in almoast every gear havent been through all gears yet gives the rider behind you a big roost right in the face. YAMAHA YZ60J 1982 Genuine owners Service Manual VMX MX DG FMF. Yamaha YZ Clymer Motorcycle Repair Manuals & Literature. 1982 Yamaha YZ80J. Bike is mostly original. Side covers, tires, sprockets, chain, air filter and graphics have been replaced. Steering bearings and seals have been replaced. Yamaha YZ125 YZ 125 Illustrated Parts List Diagram Manual 2002 - 2005 HERE. Yamaha YZ250 YZ 250 FR Motorcycle Assembly Manual HERE. Yamaha YZ400 YZ 400 E Workshop Maintenance Service Repair Manual 1977 1978 HERE. Yamaha YZ400 YZ 400 F G Workshop Maintenance Service Repair Manual 1979 - 1982 HERE. Motorcycle Manuals, carl salter, Website about motorbikes. Free Motorcycle Manuals for download. Lots of people charge for motorcycle service and workshop manuals online which is a bit cheeky I reckon as they are freely available all over the internet.
If you jetted it rich enough to keep this dog from seizing, it would blubber, puke, foul plugs and produce no power. If you jetted it to run strong, it would invariably seize. It came with air leaks, a wandering ignition, gimpy motor mounts and the worst case of Yamahop at high speeds since the original DT-1. Yamaha issued a mountain of service bulletins to try to fix the problems. None of them worked.
1982[edit]
1983[edit]
1984[edit]
1984 Yamaha YZ490 in Yellow
1984 Yamaha YZ490 in Yellow
1984 Yamaha YZ490 in Yellow
1985[edit]
See Also[edit]
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| Yamaha YZ490 | |
| Manufacturer | |
|---|---|
| Also called | YZ 490 |
| Production | 1987 |
| Class | All |
| Engine | |
| Top Speed | 88 mph |
| Horsepower | 53.77 HP (40.1 KW) @ 7000RPM |
| Fuel System | carburetor |
| Transmission | Gear box: 5-speed Final Drive: chain |
| Brakes | Front: single disc Rear: expanding brake (drum brake) |
| Weight | 235.89 pounds (107.0 Kg) (dry), |
| Recommended Oil | Yamalube 10w-40 |
| Manuals | Service Manual |
The Yamaha YZ490 was a single cylinder, two-stroke All motorcycle produced by Yamaha in 1987. Claimed horsepower was 53.77 HP (40.1 KW) @ 7000 RPM.
Engine[edit]
The engine was a air cooled single cylinder, two-stroke.
Drive[edit]
The bike has a 5-speed transmission. Power was moderated via the wet plate.
Chassis[edit]
Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The bike weighed just 235.89 pounds (107.0 Kg).