How To Tighten Bike Chain With Derailleur. But if you are dealing with a multi-gear bike and the chain is loose it can injure your foot. They control how far the derailleur can move.
For a few people the bike is a life saver for getting the chance to work or school in the event that they cant bear or would prefer not to be subject to an engine vehicle or open transportation. Leave the derailleur in the smallest cog and adjust the high limit screw. How to tighten Bike Chain with a Derailleur.
On the rear derailleur find high and low limit screws labeled H and L.
If the shift is acceptable and there is not much noise the L-limit screw is not tight. The top pulley should align with the largest cog in the cassette. Put the gear lever into top gear turn the pedals and allow the chain to go onto the smallest cog on the cassette. When its an old chain the best.
