CN-10 Cable Cutter Adjustment

This article will discuss the adjustment of the CN-10, in the event that it is not cutting properly or there is play in the handles.



The Park Tool CN-10 Professional Cable and Housing Cutter

Cable cutters rely on correct adjustment to keep the cutting blades operating properly. If the tool is not cutting correctly it may need adjustment. The handle that is adjacent to the screw head is not threaded. The handle that is adjacent to the locknut is threaded. Adjustments are made from the screw head side after loosening the locknut.

There have been several generations of the CN-10, and the concepts below apply to all.

  1. Grab the handles and test them for play by moving them against the axis of the bolt. If there is knocking or play, the tool should be adjusted.
CN 10 Adjustment 1
  1. Loosen the locknut counterclockwise.
CN 10 Adjustment 2
  1. Turn the screw slightly clockwise. Adjust in small increments of 1/16th of a turn.
CN 10 Adjustment 3
  1. Secure the locknut and test for play as in step 1. Test for play only after securing locknut.
CN 10 Adjustment 4

Repeat 3 and 4 as necessary until play is gone. Make adjustments in small increments. NOTE: A small amount of drag in the blades is acceptable.

Test the cutter on cable and housing.


With much use, any cutter edge will begin to wear and not be as effective. When this occurs it is necessary to replace the cutters.

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