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This instructable will show you how to tune up your front derailleur. This is a quick process that shouldn't run more than 20 minutes.
You will need a set of allen keys and a screw driver.
First thing to check is that the derailleur is in the right spot. Shift to the big ring and see if the derailleur cage is just a few millimeters above...
If not, then loosen the cable, and adjust the height by adjusting the clamp that holds it on the seat tube.
You want the cage of the derailleur to be lined up perfectly with the teeth of the front chain rings. When you tighten the clamp on the front derail...
Now with the cable still off of the derailleur you want to set the lower limit. the lower limit keeps the chain from falling off the chainring and on...
Now that you have the chain on the big ring in the back, its time to set the limit screw on the front derailleur. The screw closest to the frame usu...
Now attach the cable.
Now shift to the big ring in the front and small ring in the back.
Trim the other limit screw so the derailleur cage is just barely not touching the chain. If the limit is out to far it will pop over the big ring an...
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