User Guide

30
RAPIDFIRE SHIFTERS
Inspection
Once a month, check the shift cables for kinks, rust, broken strands, or frayed ends.
Also check the housing for bent ends, cuts, and wear. If you suspect a problem with your
shift cables, do not ride your bicycle. Replace the cable and/or housing before riding your
bicycle by following the instructions covering adjustment, or take your bicycle to your
Fisher dealer for service.
Once a month, check the operation of the left shift lever/front derailleur. When the left
thumb shift lever is pushed, the front derailleur should shift the chain from a smaller to
a larger chainring. When the left finger shift lever is pushed, the derailleur should shift
the chain from a larger to a smaller chainring. The chain should not fall off the inner or
outer chainrings at any time.
Once a month, check the operation of the right shifter/rear derailleur. When the right
thumb shift lever is pushed, the rear derailleur should shift the chain from a smaller to
a larger cog. When the right finger shift lever is pushed, the rear derailleur should shift
the chain from a larger to a smaller cog. After the shift, the rear derailleur should be
positioned such that it does not rub on the chain. The chain should not fall off the inner
or outer cogs at any time.
Adjustment
Left Shift lever/Front derailleur
To make the low gear adjustment on the front derailleur, first shift the chain onto the
smallest front chainring and the largest cassette cog. Loosen the derailleur cable clamp
bolt until the cable is free. Turn the low gear adjusting screw (usually marked “L”) until the
inner chain guide of the derailleur is approximately 0.5 mm from the chain. While pulling
on the front derailleur cable, push the left finger shift lever several times to ensure that
the shifter is in the small chainring position. Screw the adjusting barrel on the left shifter
to its most clockwise position. Pull the front derailleur cable taut, insert the cable in the
groove found above the derailleur cable clamp bolt, and tighten the cable clamp bolt to
32-52 lb•in (3.6-5.9 Nm).
To make the high gear adjustment on the front derailleur, shift the rear derailleur to
the smallest cog. Next, turn the high gear adjusting screw (usually marked “H”) counter-
clockwise until it cannot interfere with the motion of the derailleur. While pedaling the
bicycle with your hand, carefully shift onto the outside chainring. Position the front derail-
leur with the left thumb shift lever so that the outer chain guide of the front derailleur
is approximately 0.5 mm from the chain. Re-tighten the high gear adjusting screw until
it meets resistance. If you have turned it too far, the front derailleur will move toward
the smaller chainring.
Right Shift lever/Rear derailleur
To make the high gear adjustment on the rear derailleur, shift the chain onto the
smallest rear cog and the largest front chainring, then loosen the rear derailleur cable
clamp bolt until the cable is free.
Stand behind the bicycle to see that the smallest rear cog, the chain, and the two
derailleur pulleys are in line. If they are not aligned, turn the high gear adjusting screw
(usually marked “H”) until this line is established. While pulling on the rear derailleur
cable, push the right finger shift lever until the shifter is in the small cog position.
Screw the adjusting barrel on the right shift lever to it’s most clockwise position.
Screw the adjusting barrel on the rear derailleur to it’s most clockwise position, and
then rotate it one turn counter-clockwise. Pull the shift cable taut, insert the cable
into the clamp bolt groove on the rear derailleur, and tighten the cable clamp bolt to
32-52 lb•in (3.6-5.9 Nm).
To make the low gear adjustment on the rear derailleur, first turn the low gear adjusting
screw on the rear derailleur (usually marked “L”) far enough counter-clockwise so that
it will not restrict the movement of the derailleur. While pedaling the bicycle with your
hand, carefully shift the chain onto the smallest front chainring and the largest rear cog.
Do not over-shift the rear derailleur, or the chain may wedge between the large cog and