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brain fart

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hdbikedoc:
Anyone remember if a 1977 sporty uses dot 5 ?

Ohio HD:
I think '77 used DOT 3, maybe DOT 4.

hdbikedoc:
I thought they switched to dot 5 after 1976 ,don't want to screw up customers bike just installed a new line and need to add fluid to finish bleed, anyway to test ?

14Frisco:

--- Quote from: hdbikedoc on Sunday, July 29, 2012. 06:14:37 PM. ---Anyone remember if a 1977 sporty uses dot 5 ?

--- End quote ---

No memory of it, but the Service Manual states "Use D.O.T. 5 brake fluid only."

Isn't it cast into the cover of the master cylinder?

JC 92FXRS:
If you want to test to see what is in there now...withdraw a spoonful of the bikes fluid and put it in a small glass container, add a couple of drops of water and mix well. If the water goes into solution, i.e. the resulting mix is uniform you have DOT3, 4 or 5.1 fluid. If water stays separate and sort of rolls around like a ball in the bottom of the glass, and separate form the brake fluid, you have DOT5 fluid.
cheers, Jeff

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