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The chainrings, chain and sprockets mesh in after a short period of use. Since the chain stretches while riding, after a while the chain can only be used with those chainrings and sprockets. If parts of the transmission system are replaced, it may cause problems when shifting or lead to the chain jumping over the sprockets when pressure is applied and extremely worn chains can even break.
This is how you check whether the parts of the transmission are worn:
1. First check the teeth on the chainrings and sprockets. If they are sharp and pointed they are worn and must be replaced along with the chain.
2. Check whether the chain has been unduly stretched. For this you’ll need to use a chain wear indicator. If the indicator easily falls into the chain links, the chain must be replaced. Picture 1 If this does not remedy the problem, then the other components must also be replaced.
If part A of the tool falls right through the link, we recommend that the chain is replaced if you are using alloy sprockets or chainrings. The same applies to part S of the tool if you are using steel sprockets or chainrings.
If in doubt, you can measure with part A because alloy is much softer than steel and therefore is subject to greater wear and tear.
Your chain can become worn after 700 to 800 km depending on your cycling style and weather conditions. Therefore check the wear on your chain regularly. If you cycle for some time with a worn chain, you may then have to replace the sprockets and chain ring as well, as a new chain will no longer fit into the worn sprockets and chain ring.
Replace your chain promptly before it becomes worn. If you are extremely unlucky, a worn chain could slip or tear while you are cycling resulting in a dangerous situation. Contact our Service Centre on +49 (0) 261 40 400 0; Mon - Fri 8.00 - 19.00