when refilling a crankcase on any 2 stroke you should use 80/90 weight gearcase oil, I refrane from using synthetic due to the extreme load the bike is under, it usually takes one bottle, but besure to check on the side of the case.
A YZ250 is much faster than a CRF250r. The YZ250 is a 2 stroke where as the CRF250r is a four stroke.
Per Clymer manual... .8 Liter .85 U.S. Quart
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.
625ml
None
1 quart
Rated 40 out of the box
The YZ250 only needs about three quarters of a liter of oil. This equates to about .79 quarts, or a little over 3 cups.
your crank case does not take oil at all. your transmission however will take usually 1 to 1.5 quarts of approved transmission oil.
what kind of case do you have? a rsd case
750cc's on a ratio cup.
5 QTS. with new filter.