Each leg takes a 13.1 oz of 10 weight.
Alter oil weight selection between 5 and 15 and compressed fill height between 140 mm and 220 mm to adjust damping and bottoming resistance for your needs.
The stock spring rate is 0.325 Kg/mm.
According to the Yamaha Service Manual 17.6 US oz/18.3 Imp oz per fork is the standard capacity.
625ml
Rated 40 out of the box
I belive that the forks on a 250f are the same so that would make it 100mm for a person who would weigh inbetween 160-190lbs.
Stock it would be in the 45-47hp range.
Fork oil level 105mm is standard (or 19.4 oz or 572 cc)
72 hp @7.000rpm 90 flp's 90flp torque @ 7.500rpm
352cc of 10wt fork oiul
3.7
qt fork oil and type oil for the front fork on each side
Each front fork holds: 400cm3 or 14.1 oz or 13.5 US oz.
A YZ250 is much faster than a CRF250r. The YZ250 is a 2 stroke where as the CRF250r is a four stroke.