39
Troubleshooting
Problem
Possible Causes
Remedy
Gear shift not working properly
-Dérailleur cables sticking/stretched/
damaged
-Rear dérailleur not adjusted properly
-Indexed shifting not adjusted properly
-Lubricate/tighten/replace cables
-Adjust dérailleur
-Adjust indexing
Slipping chain
-Excessively worn/chipped chain ring or
freewheel sprocket teeth
-Chain worn/stretched/stiff link in chain
-Non-compatible chain / chain ring /
freewheel
-Replace chain ring, sprockets, and
chain
-Replace chain
-Lubricate or replace link
-Consult a bicycle mechanic
Chain jumping off
freewheel or chain ring
-Chain ring out of alignment
-Loose chain ring
-Bent or broken chain ring teeth
-Rear dérailleur side-to-side travel out
of adjustment
-Re-align if possible, or replace
-Tighten mounting bolts
-Repair or replace chain ring or chain
ring set
-Adjust dérailleur travel
