Problem | Possible Cause | Remedy |
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Gear shifts not working properly | - | Derailleur cables | - | Lubricate/tighten/replace cables |
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| sticking/stretched/damaged |
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| - Front or rear derailleur not adjusted | - | Adjust derailleurs |
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| properly |
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| - Indexed shifting not adjusted properly | - | Adjust indexing |
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Slipping chain | - | Excessively worn/chipped chainring | - Replace chainring, sprockets and |
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| or freewheel sprocket teeth |
| chain |
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| - | Chain worn/stretched | - | Replace chain |
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| - Stiff link in chain | - Lubricate or replace link |
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| - | Non compatible chain/chainring/ | - Seek advice at a bicycle shop |
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| freewheel |
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Chain jumping off freewheel | - | Chainring out of true | - |
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sprocket or chainring | - | Chainring loose | - | Tighten mounting bolts |
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| - Chainring teeth bent or broken | - Repair or replace chainring/set |
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| - Rear or front derailleur | - | Adjust derailleur travel |
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| travel out of adjustment |
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Constant clicking noises when | - | Stiff chain link | - Lubricate chain / Adjust chain link |
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pedaling | - | Loose pedal axle/bearings | - | Adjust bearings/axle nut |
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| - Loose bottom bracket axle/bearings | - | Adjust bottom bracket |
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| - Bent bottom bracket or pedal axle | - Replace bottom bracket axle or |
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| pedals |
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| - | Loose crankset | - | Tighten crank bolts |
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Grinding noise when pedaling | - | Pedal bearings too tight | - | Adjust bearings |
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| - Bottom bracket bearings too tight | - | Adjust bearings |
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| - | Chain fouling derailleurs | - | Adjust chain line |
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| - | Derailleur jockey wheels | - Clean and lubricate jockey wheels |
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| dirty/binding |
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