When Bore up is being modified, a cylinder head nut is sometimes closed more highly than the nominal torque.
You may damage the Head nut or threaded stud bolts tightened with a sense not in possession of a torque wrench.
In such a case, it is a situation check, without getting impatient.
Stat bolt only, if it is threaded, you can easily repair.
For example, the restoration is easy if it is such situation.
![CIMG4286](https://cvtmotorcycle.com/wp-content/uploads/2016/05/CIMG4286-1.jpg)
One is cut in because of too much torque,Another one of them is in a state just before cutting….Oh, it is a common thing.
Let’s stop the use of pliers if in such a situation,And make a hole in a stud bolt and make a Model T wrench state
Make a hole in the transverse direction with an electric drill
calm down, and let’s pierce it carefully.
The diameter of the hole is a good match to the thin driver size.
![CIMG4287](https://cvtmotorcycle.com/wp-content/uploads/2016/05/CIMG4287.jpg)
Loosen the stud bolt, insert a screwdriver Once you have opened a hole.
Stud bolt of the other damaged Let’s try a double nut.
But it sometimes breaks from base around the crankcase.
Such case is serious,Let’s use screw extractor.
This will be the indispensable tool when doing motorcycle repairing.
![ex1](https://cvtmotorcycle.com/wp-content/uploads/2016/05/ex1.jpg)
![ex2](https://cvtmotorcycle.com/wp-content/uploads/2016/05/ex2.jpg)
But there is also a more serious situation,If it was broken screw extractor.
Let’s dig a bolt with an electric drill in such situation.
However, if you do this, you will want to create a new thread groove in the worst case tap.
The person whom there is not of the skill to be able to make a groove to put up a stud bolt perpendicularly should ask motorcycle shop.
Solution when the screw does not come off Please refer to be together.
https://cvtmotorcycle.com/en/solution-when-the-screw-does-not-come-off/
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