How To Fix Shimano Gears On A Bicycle. Put the gear lever into top gear turn the pedals and allow the chain to go onto the smallest cog on the cassette. Locate the front set of gears the ones nearest the pedals.

The two most common tools fit Campagnolo and ShimanoSram cassette lockrings respectively. The Rapid Fire shifters replaced thumb shifters during the early nineties. Shimano gears are shifted by either a twist-grip shifter finger shifter or the shifters are incorporated into your brake levers.
If the left shifter is at 3 and the right is at 8 then you are in the hardest gear on the bike.
Locate the front set of gears the ones nearest the pedals. Put the gear lever into top gear turn the pedals and allow the chain to go onto the smallest cog on the cassette. Have a bicycle repair professional. Loosen the cable attached to the gear shifter if it wont advance to the next gear.
