1. Dismount the right crankarm (-> I.13.) Don't forget to use the small tube to protect the thin shifting shaft while pulling off the crankarm with a standard puller!

2. Unscrew the 6 Torx screws (Torx wrench T25), that hold the chainring. In case of loosing a screw: they mustn't be longer than 6.7 mm! Please use the original Schlumpf parts, if replacing such a screw!

3. Tightening torque: 8 Nm (5.5 lbft)

Standard 27 t. chainrings are black anodized. High polished and chrome plated chainrings availabe on request.