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Updated 23/05/07 RAOM0507 Apollo Bicycle Company Pty. Ltd. ABN: 60 001 914 469
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To adjust high gear:
- Turn the adjustment screw marked ‘H’ until the
top guide pulley lines up with the outside edge
of the outermost sprocket. Setting the guide
pulley beyond the outside edge of the sprocket
will cause the chain to come off when pedalling.
Setting the guide pulley too far toward the larger
cogs may prevent the chain wheel shifting onto
the small sprocket.
- Re-tighten the cable fixing bolt when adjustment
is complete.
- Position the right shifter all the way to the low
position (fully forward for downtube shifters,
fully back on MTB top bar shifters).
- Ensure that the derailleur cable is taut. If too
much slack is detected, loosen the cable fixing
bolt, pull the cable taut, and re-tighten the bolt.
To adjust low gear:
- Turn the adjustment screw marked ‘L’ anti-
clockwise until you can shift the chain onto the
largest rear sprocket and the smallest chainring.
- Move the shifter until the derailleur guide pulley
and the sprocket are aligned.
- Rotate the ‘L’ adjustment screw until it meets
resistance. The derailleur will move outward and
throw the chain off the sprocket when pedalling
if the screw is turned in too far. Conversely, if
the adjustment stops the derailleur moving far
enough, the chain may not engage in low gear.
- Test the adjustment by rapidly shifting the chain
up and down the freewheel.
Note: On bicycles equipped with indexed derailleur
systems (SIS) the chain should pause when moving
into each position. If the chain does not move easily
onto the large sprocket while on the small chainring,
screw out the ‘L’ adjusting screw slightly.
If the small sprocket is difficult to engage with the
chain on the large chainwheel, screw out the ‘H’
adjusting screw slightly.
If the chain does not easily shift to the large
freewheel cog or the large chainwheel, re-adjust the
cable either with the barrel adjuster or by repeating
the above procedures.