Join Date: Aug 2008
Location: Lethbridge, Alberta, Canada
Sounds like the brake shoe actuating cam is sticking when the brake pedal is released.
You probably need to take the rear wheel off, pull the brake shoes out and thoroughly clean the brake housing and cam.
Check brake shoes and drum for wear or deep scoring.
Measure drum diameter and check against maximum specs allowed.
Relube the cam with with a bit of moly lube or high temp brake grease.
If the return springs are worn or stretched they need to be replaced.
The Clymer service manual says you need a 5 mm bolt to pull the swingarm pivot bolts, but does not specify thread pitch.
My tap and die set has two choices- 0.8 or 0.9 mm.