Features: 1.Drilling (1)Clear the damaged thread with a standard drill. (2)Up to M12(1/22'') the KITS include the correct drill. (3)To repair a spark plug thread no Pre-drilling is necessary if using the special Spark Plug Tap. (4)Please pay attention that for Fluteless Taps bigger holes are required. 2.Check: (1)check that thread and pitch of the tap and the bolt match. 3.Tapping: Use the special V-COIL-Taps for cutting the holding thread into the cleared hole. It is recommended to use a suitable cutting oil.
Install The Insert Please insert on installation Tool and position the adjustable ring so that the insert tang is centred in the tang slot. Wind the insert in with a slight downward pressure until a half turn below the surface. Don't work against thread direction as the tang could break.