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CYLINDER HEAD
Warpage limit:
0.03 mm (0.0012 in)
If the warpage is out of specification,
resurface the cylinder head.
Place # 400 ~ 600 grit wet sandpaper on
the surface plate, and re-surface the head
using a figure-eight sanding pattern.
NOTE:
Rotate the cylinder head several times to
avoid removing too much material from one
side.
ASSEMBLY AND INSTALLATION
Cylinder head
1. Install:
Dowel pin 1
Gasket 2
2. Install:
Cylinder head
Copper washer
Bolt (cylinder head)
NOTE:
Apply Quick gasket
1215) on end of the cylinder head bolts (M6),
as shown.
Apply the engine oil on the contact surfaces of
the bolts (cylinder head) and copper washers.
Follow the numerical order shown in the illus-
tration. Tighten the bolts in two stages.
Quick gasket
ACC-QUICK-GS-KT
Yamaha bond No. 1215:
90890-85505
4 - 16
ENG
New
M8
22 Nm (2.2 m · kg, 16 ft · lb)
M6
10 Nm (1.0 m · kg, 7.2 ft · lb)
®
(Yamaha bond No.
®
:
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