Hi this is my first post and I must say I am a total n00b when it comes to mechanics.
I ride a old repco lakeside mountain bike to work each day and over time it has developed a loud squeek when I pedal. I asked one of the guys at work about it and he identified the problem as loose cotter pins giving me brief instructions on how to fix the problem.
As I am a total n00b I'm worried that I will do something wrong and end up having to walk to work which is quite a distance.
Can someone help me out with some images or detailed instructions on how to fix this without damaging the bike?