12
SIS ADJUSTMENT
If your bicycle is equipped with the Shimano Index System (SIS) you can pre-set the gear shifter
to change gear simply by clicking the shifter up or down to the required gear. The next few pages
and diagrams show how to set this up (if your dealer has not already done it). If you have any
problems you should get your dealer to set the SIS up.
Top adjustment
Turn the top rear adjustment screw on the gear mechanism so that, looking from the rear, the
guide pulley is below the outer line of the top gear.
Low adjustment
Turn the low gear adjustment screw so that the guide pulley moves to a position directly below
the low gear.
1
. Operate the shifting lever to shift the chain from the top gear to 2nd gear.
*If the chain
will not move to the 2nd gear
, turn the cable adjusting barrel to increase the
tension
1 (counter clockwise)
*If the chain
moves past the 2nd gear
, decrease the tension
2 (clockwise)
CABLE
ADJUSTMENT
BARREL
TOP
2nd
3rd
Be sure to perform oil maintenance at each part of the transfer mechanism. The optimum oil is
dry molybdenum oil or the equivalent.
LOW
ADJUSTMENT
SCREW
LOW GEAR
GUIDE
PULLEY
TOP
ADJUSTMENT
SCREW
TOP GEAR
OUTER SLIDE
GUIDE
PULLEY
COUNTER
CLOCKWISE
CLOCKWISE
CABLE ADJ.
BARREL
1
2
2. Next, with the chain on the 2nd gear,
increase the inner cable tension while turning
the crank forward. Stop turning the cable
adjusting barrel just before the chain makes
noise against the 3rd gear. This completes
the adjustment.
Front Derailleur
The adjustment of the sideways movement of the front changer is by means of two gear stop
screws situated on the body of the changer mechanism. The inner screw limited the inner travel
of the changer cage, the outer limits the outward movement
Use the following procedure for adjustment:
1
. While turning the pedals forward select the middle (on a triple chainset) or the top chainring
then select the smallest rear sprocket.
2
. While turning the pedals adjust the inner screw on the front changer so that the chain will just
drop into the lower ring with the gear lever fully forward.
3
. Select the largest rear sprocket. If there is any evidence of chain rub adjust the inner screw
until this just ceases.
4
. With the chain still on the largest rear sprocket select the ring below the largest at the front.
Adjust the outer screw so that the chain just selects the outer chainring when the gear lever
is moved through its full arc range.
