| 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 |
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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.
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]
1982 Yz 100 For Sale
1982 Yamaha Yz 100 Manual Download
See Also[edit]
| ||||||
| |||||
| 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).
In Media[edit]
References[edit]
Complete coverage for your vehicle
Written from hands-on experience gained from the complete strip-down and rebuild of a Yamaha YZ100, Clymer can help you understand, care for and repair your Yamaha YZ100. We do it ourselves to help you do-it-yourself, and whatever your mechanical ability, the practical step-by-step explanations, linked to over 900 photos, will help you get the job done right. Regular servicing and maintenance of your Yamaha YZ100 can help maintain its resale value, save you money, and make it safer to ride.