Installation - Yamaha RS90K Service Manual

1
1
6 2 4
7 3 1
CYLINDER HEAD

INSTALLATION

1. Install:
2
New
2. Install:
NOTE:
Pass the timing chain through the timing chain cav-
ity.
3. Tighten:
8
NOTE:
The tightening procedure of the cylinder head bolts
is angle controlled, therefore tighten the bolts using
the following procedure.
5
Tightening steps:
• Lubricate the cylinder head bolts and washers
• Install the washers and cylinder head bolts.
• Tighten the cylinder head bolts in the proper
• Loosen and retighten the cylinder head bolts in
5-26
• Dowel pins 1
• Gasket 2 New
• Cylinder head
• Cylinder head bolts (M10)
with engine oil.
tightening sequence as shown.
Cylinder head bolt (M10):
1st:
25 Nm (2.5 m · kg, 18 ft · lb)
the proper tightening sequence as shown.
Cylinder head bolt (M10):
2nd:
25 Nm (2.5 m · kg, 18 ft · lb)
ENG