
Replacing the Cassette
Before you replace the cassette, you must obtain a cassette lockring tool and a cassette pliers or chain whip.
You should keep all of the trainer parts and installation kit items together (Installation Kit, page2).
NOTICE
You must be familiar with bike tools and cassette maintenance, or you may damage the trainer. If you have
never removed or installed a bike cassette before, Garmin® recommends you take the trainer to an experienced
bike technician.
TIP: If you have multiple bikes with different cassette systems, it is easiest to leave the cassette on the freehub
body and replace them together. You can use this graphic as a reference, knowing that each cassette variation
has unique requirements.
1Open the installation kit .
2If you have a cassette that is compatible with the included freehub body, follow these steps:
2.1Use the cassette pliers or chain whip to hold the cassette in place.
2.2Use a cassette lockring tool to turn the lockring counter clockwise.
This requires strength and leverage.
2.3Remove the cassette, leaving the freehub body in place.
2.4Go to step 4.
3If you have a cassette that requires a different freehub body, follow these steps:
3.1Use the cassette pliers or chain whip to hold the cassette in place.
3.2Use a cassette lockring tool to turn the lockring counter clockwise.
This requires strength and leverage.
3.3Use the blue tool to remove the locknut .
3.4Remove the cassette, lockring, and freehub body .
You can keep all of these parts together in case you decide to switch to an 11 speed system.
3.5Install the new freehub body and the locknut.
3.6Go to step 4.
4Place the cassette on the freehub body, and attach the lockring.
Some 9 or 10 speed cassettes may require an extra spacer between the cassette and lockring. For more
information, see the manufacturer's instructions.
5Before you tighten the lockring, check for clearance.
Some 12 speed cassettes may require an extra spacer between the trainer and the cassette.
14 Device Information