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Old 11-23-09, 12:11 AM
  #4  
MikeWinVA
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Join Date: Oct 2009
Location: Northern/Central VA
Posts: 212

Bikes: Specialized Sirrus, Univega Activa ST Hybrid, 70's Schwinn Traveler, Giant Innova, Nishiki Mixte

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The first thing to do is check the alignment of the front dérailleur (FD). Set the dérailleur to the largest chain ring. Make sure that there is about 1 MM (thickness of a penny) of clearance between the outboard edge of the FD and the chain ring in height. This will require you to loosen the dérailleur and raise or lower as needed on the seat tube. Then be sure that the outboard edge of the FD is parallel with the chain ring and not cocked or rotated.

The 2 screws on the dérailleur limit the high and low positions or the maximum and minimum throw of the dérailleur. They stop the chain from being thrown into the frame on the inboard side or onto the crank on the outboard side. However, they can be set where the dérailleur does not have enough travel and will not shift in the full range. Read the directions on the park site, as they are better than we can give here briefly.
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