Rear Sprocket | Front Chainwheel |
| Pull up |
| 10 mm |
| Straightedge |
Lubrication |
|
CHAIN
Inspection
The chain must be kept clean, rust free and frequently lubricated in order to extend its life as long as possible. It will require replacement if it stretches, breaks, or causes inefficient gear shifting. Make sure that there are no stiff links, they must all move freely.
The chain should be lubricated with light oil at least every month, or after use in wet, muddy, or dusty conditions. Take care to wipe off excess oil, and not to get oil on the tires or rim braking surfaces.
Adjustment and Replacement
On derailleur geared bicycles the rear derailleur automatically tensions the chain.
To adjust the chain on single speed freewheel, coaster hub braked or
1. Loosen the rear axle nuts (and coaster brake arm clip if fitted) and move the wheel forward to loosen, or backward to tighten, in the frame.
2. When correctly adjusted, the chain should have approximately 10mm of vertical movement when checked in the center between the chainwheel and rear sprocket. Center the wheel in the frame and
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chainwheel when pedaling forward.