HAND TOOLS:
DRILL
Drill out the damaged threads using the drill supplied in the kit. Drill to a sufficient depth to accommodate the insert length and the bolt or screw being used.
TAP
Tap the hole using the Heli-Coil tap supplied in the kit. Check the size on the shank of the tap to be sure it is the right size.Tap the hole to sufficient depth to accommodate the insert length and bolt or screw being used.
NSTALL
Install the appropriate length insert from the kit. Use the installation tool supplied in the kit or set. Wind the insert into the hole until the top coil is1/4 to 1/2 turn below the top surface.
TANG REMOVAL
Remove the tang by using the tang break-off rod (when supplied with the kit) or a punch which fits the inside of the insert. Place the punch or rod squarely on the tang and strike sharply.
For insert over 1/2 inch, 12mm, or for spark plug inserts, use long nose pliers. Holding the tang with the pliers, bend it alternately in and out until it comes free.
Note: For Spark Plug repairs, NO drilling is necessary. The Heli-Coil spark plug kit contains a piloted reamer tap.With this tap, the damaged threads are removed and new threads are cut in one continuous operation
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