Okay. I have ridden bikes a lot but never done much work on them. I am very mechanical and do a lot of my own repairs on cars and engines so I should be able to fix my bike. My problem is, I don't know what the names of the parts are or where to buy them.

Okay, so what do you call the barring system where the pedals rotate. These bearings are shot on my bike. Where can I go to buy these parts and how do I know which ones to buy?

My bike is a Schwinn Men's Trailway 28"/700c Hybrid Bike