I assume it fell apart from off road use and vibrations – screw on the underside came off in my hand and bits everywhere incl. the quick release leaver.
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Steps to fix:
- Turn the leaver upside down so you can work with it on top of the handlebars and everything wont fall out (Pic 1)
- Undo screw on base and remove case ( Pic 1)
- Lock leaver sits on the base (now top if upside down) (Pic 2)
- Whilst requiring some force (lockout cables pulling it), you can lift the large lock leaver up and out of the way
- The release lever sits in a cradle, and a tiny spring is required (Pic 3)
- The tiny sprint sits in an etched groove. With out it there’s no spring back
- Place lock leaver back on top and screw back together (+ lubricate?)
- Fixed!
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This release sits on a 2017 Giant Anthem Advanced