1983 and 84, 19.9 oz. per leg....... per manual.
r1 fork oil capacity
Lance's Haynes manual says: Capacity: 555cc, Type: Yamaha fork oil "01" or equivalent
238ml per fork
fork oil amount yamaha thunderace
fork oil capacity for a 2009 yz450f is 6.73 us oz recommended oil is Yamaha suspension oil "S1"
XJ900 Year 1983 is 286 ccSee http://www.motorbikespecs.net/index.dyn?flag=2&model_id=2147989&make=Yamaha for lots more models.
20.5 oz
482 cm3
440 cc
seven inches from the top with the fork collapsed and the spring out
14.7 us oz