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Add 2 links (with the chain on both the largest sprocket and the largest chainring). This should leave just enough
slack so that the rear derailleur jockey wheels are pointing forward but so that they can still move up a fraction.
Then check that there is not too much slack when using the smallest chain ring and smallest cassette sprocket.
TIP – get an extra pair of hands to help with this. Make
sure that any links you alter with the chain link
remover are not stiff on the rivets. If in doubt, remove
fewer links than you think as removing links is easier
than riveting links back in. Use the quick disconnect
link to open the chain and then punch out links and
quick connect back together.
When you've finished adjusting the chain length, check
at the pulley plate where the chain enters and leaves
the chain tubes. The plastic clips should be adjusted
vertically so the chain is running centrally where it
enters and exits the chaintubes. This is also the
position where the chain runs at it quietest.
The chain tubes have come with a small piece of nylon
webbing with 2 square holes in it. This holds the back
end of the lower chaintube, and keeps it from sagging.
The webbing strap is slipped over the rear cable stop on
the frame. Pull the cable housing from the stop, and
then slip the hole in one end of the strap over the cable
stop. Loop the strap around the bottom chain tube and
then slip the other loop over the cable stop. Replace
the cable housing in the cable stop.
2.22 Check the gear shifting
Check the rear gears are shifting correctly. Raise the rear wheel off the ground by getting a helper to hold it up
or standing an object under the left side dropout so that the pedals can be turned making the chain turn the rear
wheel. Gently twist the right hand shifter up through the gears one click at a time whilst turning the pedals.
Take care on the rear cassette that the chain does not jump between the largest sprocket and the spokes. This is
prevented by the low adjustment limit screw on the rear derailleur which can be adjusted if required. Check also
that the chain doesn't drop off between the smallest sprocket and the dropout. This is adjusted using the High
Adjustment screw.
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