Yamaha XV19SX(C), Service Manual

Page: 288 / 494

CYLINDER HEADS
5-39
EAS24250
INSTALLING THE CYLINDER HEADS
1. Install:
• Cylinder head gasket “1”
• Dowel pins “2”
NOTE:
The “1D7” mark on the cylinder head gasket
must face up and towards the left side of the cyl-
inder.
2. Install:
• Cylinder heads
• Washers
• Cylinder head nuts
NOTE:
Lubricate the cylinder head nuts and washers
with engine oil.
3. Tighten:
• Cylinder head nuts
NOTE:
Tighten the cylinder head nuts in the proper
tightening sequence as shown and torque them
in two stages.
4. Install:
• Copper washers
• Oil pipe 1
• Oil pipe union bolt (M8)
• Oil pipe union bolts (M10)
NOTE:
Tighten the three union bolts evenly, and then
torque them to specification.
5. Install:
• Engine bracket (right upper side)
• Engine bracket bolts (right upper side)
• Engine mounting bolts (right upper side)
• Engine bracket (left upper side)
• Engine bracket bolts (left upper side)
• Engine mounting bolts (left upper side)
NOTE:
• Apply locking agent (LOCTITE®) to the
threads of the engine mounting bolts (left up-
per side).
• Do not fully tighten the bolts.
6. Tighten:
• Engine mounting bolts (right upper side)
• Engine mounting bolts (left upper side)
• Engine bracket bolts (right upper side)
• Engine bracket bolts (left upper side)
T
R
.
.
Cylinder head nut
60 Nm (6.0 m·kg, 43 ft·lb)
New
2
2
1 New
3
1
2
4
A
A. Front cylinder
B. Rear cylinder
T
R
.
.
Oil pipe union bolt (M8)
XV19S(C)/ XV19M(C)/
XV19CTS(C)/ XV19CTM(C):
18 Nm (1.8 m·kg, 13 ft·lb)
XV19CS(C)/ XV19C(C):
17 Nm (1.7 m·kg, 12 ft·lb)
T
R
.
.
Oil pipe union bolt (M10)
21 Nm (2.1 m·kg, 15 ft·lb)
3
1
2
4
B
New