2008年11月12日 · The 490 SHOULD have and could HAVE been a relative to the yz 250, but many things went wrong. Also, showing up on a two stroke motorcycle forum and posting how …

2013年11月13日 · hello, I just got a 1989 yz 490, wondering about what kinda mods guys were doing to them? thanks

2006年12月23日 · Had a 75 MX 400, 76 YZ 400, 82 490, 87 490. I never checked compression once. After blowing the YZ and MX 400 up twice I went to a 32:1 and ran a bit rich. I would run …

2010年7月30日 · ive got my eye on an 82 yz 490, im trying to sell my 79 yz 250 project to fund it. the bike seems in good shape, he says its mint, but i havent seen it yet. ive read some other …

2013年8月30日 · Home Forums Dirt Bikes Make / Model Specific Yamaha Motorcycles Yamaha 2 Stroke yz 490 motor

2012年5月3日 · I'm looking for ways to get my 1983 Yz 490 to start easier. My main type of racing is dead-engine-start Hare Scrambles.

2013年11月13日 · All Activity Home Forums Dirt Bikes Dirt Bike Technical Forums Motorcycle Suspension 1989 yz 490 suspension upgrades

2011年2月28日 · The new water cooled 490 hopefully will put those bad memories to rest. The vibration issue was one I recall hearing about, that has been solved with new thicker aluminum …

2010年11月4日 · I am looking at buying a 1986 YZ490. It seems to be in good shape, and runs good. Are these goods bikes, or duds?

2011年1月18日 · My 490 will be getting the head cut as soon as the motor is opened up. Needs some small things but from the looks of the bike it isnt in too bad of shape. I plan on finishing …