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Loose Chain

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Post  alext on Sat Aug 06 2011, 10:22

Can someone explain in simple terms (cos Im blonde!) how to tighten my chain? Is it a simple DIY job?
Cheers!
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Post  Wooster on Sat Aug 06 2011, 10:57

Loosen rear axle nut with bike on deck then bung it up on rear paddock stand.
At the ends of the swing arm the adjusters have two nuts on them, the furthest ones are lock nuts, so slacken them off.
Tighten the (inner) adjuster nut on the chain side first until you have about 15mm of play up and down on the lower part of the chain.
N.B. the chain stretches unevenly, so rotate the rear wheel and adjust based on the tightest part of it.
On both sides of the axle bolt, there's a chromed ring with a notch in the top, and on the swing arm a series of marker grooves (a ruler basically).
Note the position on the chain side and tighten the other side until it matches.
Tighten the two lock nuts and then tighten the axle nut (with the wheel on the deck again).

That's you, jobs a good un. Smile


Last edited by Wooster on Sat Aug 06 2011, 10:58; edited 1 time in total
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Post  weasley on Sat Aug 06 2011, 10:57

It is pretty simple as long as you have the right tools.

Essentially you loosen the rear wheel spindle using a big socket - the wheel can now slide forwards and backwards; you move it so the chain is at the right tension then retighten it. To move it you use the smaller bolts and nuts on the rear of each swingarm leg; unlock the rear-most nut, use the inner nut to tighten or loosen the chain, tighten up the axle, then retighten the locknuts.

You have to make sure the wheel stays in line, so turn each nut on the rear the same amount. You need to have the bike on a paddock stand to do this and will need a big enough socket (is it 28mm or 32mm?) and ideally a torque wrench to retighten the rear wheel (115 Nm, although a long bar and a good tug should do it).
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Post  Wooster on Sat Aug 06 2011, 10:58

Snap.. tongue
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Post  alext on Sat Aug 06 2011, 11:00

Thank you!
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Post  stretchie_ on Mon Aug 08 2011, 09:41

Alright Alex... Need a hand?
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