Difference between revisions of "Yamaha YZ490"
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|photo= 1982-Yamaha-YZ490J-Yellow-0.jpg | |photo= 1982-Yamaha-YZ490J-Yellow-0.jpg | ||
|aka = | |aka = | ||
|manufacturer = | |manufacturer = Yamaha | ||
|parent_company = | |parent_company = | ||
|production = 82-90 | |production = 82-90 | ||
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|predecessor = [[Yamaha YZ465]] | |predecessor = [[Yamaha YZ465]] | ||
|successor = | |successor = | ||
|class = | |class =Motorcross | ||
|engine = 490 | |engine = 490 | ||
|bore_stroke = | |bore_stroke = | ||
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{{Motorcycle | {{Motorcycle | ||
|name = | |name = Yamaha YZ490 | ||
|aka = YZ 490 | |aka = YZ 490 | ||
|manufacturer = | |manufacturer = Yamaha | ||
|parent_company = | |parent_company = | ||
|production = 1987 | |production = 1987 | ||
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|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = | |class = All | ||
|engine = single cylinder, two-stroke | |engine = single cylinder, two-stroke | ||
|bore_stroke = | |bore_stroke = | ||
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[[Category:Yamaha motorcycles]] | [[Category:Yamaha motorcycles]] | ||
[[Category:1980s motorcycles]] | [[Category:1980s motorcycles]] | ||
[[Category:Multiple Infoboxes]] | [[Category:Multiple Infoboxes]] | ||
Latest revision as of 20:05, 23 November 2019
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| 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 | edit source]
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.
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 | edit source]
1982 Yamaha YZ490J in Yellow
1982 Yamaha YZ490J in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1982 Yamaha YZ490 in Yellow
1983[edit | edit source]
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1983 Yamaha YZ490K in Yellow
1984[edit | edit source]
1984 Yamaha YZ490 in Yellow
1984 Yamaha YZ490 in Yellow
1984 Yamaha YZ490 in Yellow
1985[edit | edit source]
1985 Yamaha YZ490 in White/Red
1985 Yamaha YZ490 in White/Red
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
1985 Yamaha YZ490 in White
See Also[edit | edit source]
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| Yamaha YZ490 | |
| Manufacturer | |
|---|---|
| Also called | YZ 490 |
| Production | 1987 |
| Class | All |
| Engine | single cylinder, two-stroke |
| 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 | edit source]
The engine was a air cooled single cylinder, two-stroke.
Drive[edit | edit source]
The bike has a 5-speed transmission. Power was moderated via the wet plate.
Chassis[edit | edit source]
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).