Service manual says,(241cm (8.48 Imp oz-8.15 US oz) Recommended oil , 15wt or equivalent
352cc of 10wt fork oiul
3.7
qt fork oil and type oil for the front fork on each side
According to the Yamaha Service Manual 17.6 US oz/18.3 Imp oz per fork is the standard capacity.
How much fluid in the front forks of a 1985 atc 250r take. I am changing the fork seals
Each front fork holds: 400cm3 or 14.1 oz or 13.5 US oz.
I think 1L to 1.5L will be the quantity.
12.75 .oz #10 fork oil 6psi pressure
800cc
About 137bhp at the back wheel
There isn't an 850 venture. Only a 1200 and 1300.
7.8 oz. of 10wt fork oil