It’s easy to confuse freewheels and cassettes, since at first glance, they are so much alike.
The freewheel is a single unit with bearings and pawls, mounted directly onto the hub. With a cassette, the bearings and pawls are part of another part, the freewheel hub. The cassette is mounted on this part, that makes freewheeling possible.
Freewheels are available with one to eight cogs.
It depends on the length of the axle which freewheel is suitable for your hub.
The rear wheel should be removed from the bicycle, before you can access the freewheel.
Step 1 : Removing the freewheel
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It is best to remove the freewheel with a mounted tire, so you will have sufficient grip on the wheel.
If there’s no tire mounted on the rim, place a mat underneath the rim to prevent damage to the edge.
Place the freewheel removal tool in the center of the freewheel and hold onto the tire. Then use an adjustable wrench on the removal tool to loosen the freewheel, until the freewheel can be removed from the hub in its entirety. (2, 3)
An easy way to remove the freewheel is by putting the removal tool in a vice. Put the wheel with the freewheel upside down on the removal tool. Now spin the wheel counter-clockwise by hand.
Step 2 : Mounting the freewheel
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Clean the hub and grease up the thread with some bearing grease. (1)
Put the freewheel on the hub by hand and tighten it as much as possible. (2)
Use the removal tool and the adjustable wrench for the last bit of tightening. (3)
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Step 1 : Removing the freewheel
