Repair Guide / Drivetrain See also:
Bicycle Drivetrain Tutorials
Video tutorials about drivetrain maintenance and repair.
Repair Guide / Drivetrain 
Order Parts & Tools
How To Replace Cotterless Crank Arms
Crank removal and installation procedure on a square-spindle, sealed bottom bracket.
Crank, Drivetrain
How To Replace Your Pedals
Applies to both 1/2″ and 9/16″ thread sizes. The left pedal has a reverse thread.
Drivetrain, Pedal
How To Adjust Your Front Derailleur
Applies to most 3-chainring derailleur systems. Adjust your Rear Derailer
Derailleur, Drivetrain, Front Derailleur
How To Calculate Chain Length
Measure the correct length of a new bike chain.
Chain, Drivetrain
How To Replace a Cassette Cluster
Applies to most Shimano cassette/freehub combos (not freewheels).
Cassette, Drivetrain, Freewheel
Why WD-40 is Bad for Your Bike Chain
Using WD-40 as a chain lube can actually damage your chain.
Chain, Drivetrain, Lubrication, Oil
How To Adjust Your Rear Derailleur
Applies to most 3-chainring derailleur systems. Adjust your Front Derailer
Derailleur, Drivetrain, Rear Derailleur
