Full instructions are included with each Throttle Shaft Repair Kit. In summary, the steps are:

1. Disassemble and clean the carburetor or throttle body.
2. Lubricate the tool and throttle body using WD-40 or equivalent light oil. Insert the chuck end of the tool into a hand-held drill and tighten the chuck.
3. Insert the pilot end into the the throttle shaft hole in the carburetor or throttle body.
4. With slight pressure and turning at moderate speed ream out the hole until the built-in stop on the tool is reached.
5. Remove the tool.
6. Drive the bushing in using a hex-head bolt as driver (see Full Instructions).
7. Reassemble the throttle body or carburetor.

Unlike old-style reaming tools, the revolutionary Zako ATS does not require precision machining skills, a drill press, complicated jigs, additional drill bits etc.

The Zako ATS Throttle Shaft Tool is a one-piece, foolproof solution to installing bushings with perfect alignment, every time!