Please add your favorite Blogs and Forums:
Yamaha 4 stroke Snowmobiles: http://www.ty4stroke.com/
Yamaha 2 stroke Snowmobiles: http://www.totallyamaha.net/forums/
Yamaha Snowmobile Tech: http://www.totallyamaha.com/
83 to 87 Vmax: http://www.vintagevmax.com
Vmax4: http://www.vmax4.com/