Bolt Cylinder Head

The specific method is as follows：

1. First twist from the middle to both sides, 50% of the final torque of the first twist, and then loosen all.

2. Then twist it 50% from the middle to the sides.

3. Finally, it is better to tighten the cylinder head screws according to the way of first middle and then both sides.

But do not screw too tight, otherwise it will lead to too much force on the bolt, not only cause the internal thread appears the situation of sliding teeth, or even direct pull is possible.So, before you tighten, you should always determine the torque of the bolt.

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