Yamaha XSR 2016 - Installing the Cylinder Head

CYLINDER HEAD
5-21
EAS30282
INSTALLING THE CYLINDER HEAD
1. Install:
• Timing chain guide (exhaust side) “1”
• Cylinder head gasket “2”
• Dowel pins “3”
2. Install:
• Cylinder head
• Cylinder head bolt (M6) (4)
• Cylinder head bolt (M9) (8)
TIP
• Pass the timing chain through the timing chain
cavity.
• Lubricate the cylinder head bolt (M9) thread
and mating surface with engine oil.
3. Tighten:
• Cylinder head bolts “1”–“8”
• Cylinder head bolts “9”–“12”
* Following the tightening order, loosen the bolt
one by one and then retighten it to the specific
torque and the specific angle.
TIP
Tighten the cylinder head bolts “1”–“8” in the
tightening sequence as shown and torque them
in 2 stages.
4. Install:
• Exhaust camshaft
• Intake camshaft
Refer to “INSTALLING THE CAMSHAFTS”
on page 5-14.
Cylinder head bolt “1”–“8”
1st: 25 Nm (2.5 m·kgf, 18 ft·lbf)
*2nd: 16 Nm (1.6 m·kgf, 12 ft·lbf)
+90

Cylinder head bolt “9”–“12”
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
New
1
2
3
3
New
T
R
.
.
8
4
1
2
3
4
5
6
7
8
9
10
11
12