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fork oil capacity for a 2009 yz450f is 6.73 us oz recommended oil is Yamaha suspension oil "S1"
120mm level
the front fork oil leval is to be set at 130mm from the top of the fork (air gap)..with the fork spring out ..and the fork fully collapsed ....
add 9.48oz 10 weight oil level should be 130mm from top of tube level
238ml per fork
fork oil amount yamaha thunderace
r1 fork oil capacity
255 cc each fork
Lance's Haynes manual says: Capacity: 555cc, Type: Yamaha fork oil "01" or equivalent
352cc of 10wt fork oiul
fork oil amounts for a Yamaha GT 80 are 108 to 116cc's per fork tube. you should use 10w motorcycle fork oil. this is good for all years from 1974 to 1980.
this is directly from Yamaha i work at a dealership 5w oil is recommended 329cc or 90mm oil height