- 1). Put the bicycle into the stand and secure it down. Insert the chain tool over one link on the chain and turn the tool's handle while it is over the link pin, pushing it out and opening the chain. Remove the chain.
- 2). Insert the 8mm hex wrenches into the center crank bolts in the center of the chain-rings and cranks. Hold one crank in one hand and use opposite force with the other to loosen and then unscrew the center crank bolts.
- 3). Insert the spanner teeth into the housings on the inner rings of the cranks. Pull off the cranks.
- 4). Unscrew the double chain-ring using a 5mm hex wrench on the small chain-ring retaining pins. Pull off the ring you do not wish on the bike.
- 5). Place the cranks back onto the bicycle and insert the 8mm hex wrenches into the screws and tighten the cranks back onto the spline and bicycle.
- 6). Run the chain back up and around the chain ring and cassette at the rear wheel (the gear cluster). Bring the open ends of the chain together and hold it together around the gears. If there is slack on the chain more than 4mm, remove a link from the chain with the chain tool. Pull the chain together over the drivetrain (gears and chain ring) and tighten the chain together again with a new link pin and the chain tool.
- 7). Crank the pedals by hand and check the chain is moving over the single chain-ring smoothly. Once satisfied, remove the bike and go enjoy your single-chain ring ride.
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