My manual says 38 ounces of fluid in the primary. The 06 holds 32 oz. (one quart), did they increase the capacity of the primary? Why? Also is there a mark that you should fill the primary to?

 

Forget about quantity, use the mark. There is a diaphragm on the clutch basket, with the bike sitting level the oil should just touch the bottom of the diaphragm.

 

Thanks, that's what I was thinking. I usually fill it up until it touches the silver ring around the clutch basket.

 

Youll find it will take more than the early models,I used to just put in a quart on my 05 ,when I changed oil on my 07 put in a quart and WTF came nowhere close to the clutch,OK maybe I better read the manual...yep takes more 38oz wet 44oz dry according to mother harley,didnt measure but had to put more than a quart..