www.shimano.com has detailed basic manuals for all their components.
What are you having problems with adjusting?
Tips:
On the side of the cantilevers there is a tiny 2mm set screw, these adjust tension and will help to balance the two brakes for centering.
Make sure the cable assembly is centered over the brakes.
Pads - if you can't get them to stay in place you may have to replace the conical washers or the pads or both.
×