How to use the TimeSert kit #4412321 to repair a 14mm spark plug hole thread. In this video I show you how on the Kawasaki KZ1000 Police P21 cylinder head. It is off the cylinder block so it's easier, but this kit is designed for use in situ when a spark plug thread is damaged but not completely obliterated. The tap selfaligns and allows a straight tapping operation so the hole is square.

00:00 Intro
01:07 Prepping the old threads
01:25 Discussing pros and cons
02:52 Showing the TimeSert kit
04:35 Inserting the tap into existing threads
05:25 Driving the tap cutting new threads
06:31 Using the counterbore tool
09:03 Prepping new threads for insert
09:20 Going over instructions for insert
10:13 Installing insert
11:25 Using driver to install insert
12:39 Examining finished insert
12:54 Installing spark plug new threads
13:15 Looking at insert from inside
14:16 General discussion and points
15:21 Outro