Park Tool Co.
6 Long Lake Rd. St. Paul, MN 55115 (USA) www.parktool.com
CT-7
Screw Type Chain Tool
for 1/8” and 3/16” Chain
Instructions:
1/8” and 3/16” chains are commonly used on track, BMX, and freestyle
bicycles. Below are general instructions for using the CT-7 to separate and
assemble links when sizing, installing, or removing these chains.
For chains that use a “master link” system, follow the manufacturer’s
instructions for separation and assembly. Use the CT-7 only to add or
remove links when sizing the chain.
Note: The CT-7 is designed for use with 1/8” and 3/16” chains only. Park Tool
CT-2, CT-3, CT-4, or CT-5 should be used for 3/32” derailleur type chains.
Chain Separation:
1. If chain is installed on bike, loosen rear wheel axle nuts to relieve
chain tension.
2. Place link of chain over the primary cradle of tool and center chain
tool pin in chain rivet.
3. Turn handle to force rivet out backside of chain. Do not press old rivet
completely out backside of chain. Only press rivet enough to allow
chain to be separated.
Chain Assembly:
1. Place assembled link of chain over primary cradle of tool and center chain tool pin on chain rivet.
2. Turn handle until rivet is pressed into chain. When properly assembled, an equal amount of rivet should be showing on each side of chain.
3. Remove tool and inspect link. Because of the extreme pressure needed to assemble a chain, sometimes a “tight link” develops. If this happens,
place link over tight link cradle and turn handle until pin contacts rivet. Turn handle slightly to press on rivet and loosen tight link.
Use Park Tool CTP or CTP-C Replacement Chain Tool Pin
Tight link cradle
Kettenlösefach
Cavalier pour
maillon dur
Receptaculo para
eslabon apretado
Primary cradle
Montagefach
Cavalier primaire
Receptaculo primario
© 2009 Park Tool Co.
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