91OWNER’S MANUAL
TROUBLESHOOTING CHART
PROBLEM POSSIBLE CAUSE REMEDY
Grinding noise when
pedalling
Pedal bearings too tight Adjust bearings
Bottom bracket bearings too tight Adjust bearings
Chain fouling derailleurs Adjust chain line
Derailleur jockey wheels dirty / binding Clean and lubricate jockey wheels
Freewheel does not
freewheel
Freewheel internal pawl pins are
jammed
Lubricate. If problem persists, replace
freewheel
NOTE: Regular maintenance by your bicycle retailer is recommended
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