A YZ250 is much faster than a CRF250r. The YZ250 is a 2 stroke where as the CRF250r is a four stroke.
87 Yamaha YZ250
Selling a 1997 yz250 really depends on the condition it is in and the person selling it. Most 1997 yz250 usually sell for around a thousand dollars and lower.
Yamaha YZ250 hands down. Both bikes are designed for a different purpose. The YZ250 is a 2 stroke motocross bike. The WR250F is a four stroke enduro bike.
Yz250
I have a 1988 Yamaha YZ250 and my manual states .028 is the setting that you should use.
Unfortunately, a newer yz250 model engine will not be able to fit the frame of a 1991 model. These engines were designed to specifically fit the frames of certain models of the vehicle and are not universal.
A dead battery would cause an 89 YZ250 not to start. Another reason it might not start is because it is out of gas.
Yz250 by Yamaha
u kick start it
It should maybe a minor adjustment needed.
I am fairly sure the fork style changed... I would not take the chance if possible