THE UNI-THREAD SYSTEM ENABLES YOU TO
CREATE STRONGER OR REPAIR DAMAGED
THREADS IN SIX EASY STEPS

STEP 1
STEP 2
STEP 3
DRILLING
CHECK
TAPPING

Clear the damaged thread with a Standard Drill. Up to M12 (1/2") the Kits include the correct drill.
To repair a spark plug thread no pre-drilling is necessary if using the special Spark Plug Tap

Check that thread and pitch of the tap and bolt match.

Use the Tap for cutting the holding thread into the cleared hole. It is recommended to use a suitable cutting oil.
STEP 4
STEP 5
STEP 6
INSTALL THE INSERT
TANG REMOVAL
Place 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 light downward pressure untill a half turn below the surface. Don't work against thread direction as the tang could break. After finishing, lift the Installation Tool and use the Tang break Tool to remove the tang. For bigger sizes and Spark Plug Taps use Long Nose Pliers to remove the tang. Due to the narrow and exact tolerances the new thread normally is stronger than the original one.