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All 650's Empty rear brake reservoir.

Doohanisthegoat

2016
CBR650F ABS
Mar 14, 2020
Edinburgh, Scotland
Riding Since
1989
For some reason the rear brake reservoir on my bike is completely empty. I don't often use the rear brake so was wondering what I should look for to see what caused it?
 

baugustine

2014
CBR650F
Staff
May 21, 2016
Ventura, CA
Look at the connection points of the lines (on the master cylinder itself, at the brake lever assembly and then the caliper). You should see something wet. Be advised, brake fluid is caustic and removes paint and clearcoats rather quickly.
 
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