Tightening The Cylinder Head - Yamaha YZF-R1 Kit Manual

Tightening the Cylinder Head

1. In the following order (1→10), apply initial
tightening of 10 N•m (1.0 kgf•m).
2. In the following order (1→10), apply
additional tightening of 25 N•m (2.5 kgf•m).
3. In the following order (1→10), apply
additional tightening of 45 N•m (4.5 kgf•m).
4. In the following order (1→10), loosen each
bolt. Then, tighten at 15 N•m (1.5 kgf•m)
and tighten at rotating angle of 160°.
(Note: Do not loosen all bolts at once.
Repeat loosening and tightening operation
one by one bolt.)
TIP
The numbers 1 to 10 show the sequence
in which the bolts are tightened.
Apply engine oil to the bearing surface
and thread part of the bolt.
Use a new bolt only. (Do not reuse)
8
9
6 2
3 1
4
5
– 66 –
10
7
10