Cylinder Head Assembly; Breather Hose - Yamaha EF3000iSE Service Manual

CYLINDER HEAD COVER AND CYLINDER HEAD
3. Measure:
• Cylinder head warpage
Measure the warpage on the contact
surface of the cylinder head at six
points using a straightedge and thick-
ness gauge.
Warpage limit:
SVU3120J
Out of specification → Resurface or
replace.

CYLINDER HEAD ASSEMBLY

1. Install:
• Cylinder head bolts 1 to 4.
NOTE:
Tighten the bolts to the specified torques in
two steps and in order from 1 to 4.
Cylinder head bolts:
SWL3340J

BREATHER HOSE

1. Inspect:
• Breather hose 1
NOTE:
Contact the end of the breather hose to the
reed valve stopper a.
SVU3140J
3-27
ENG
0.05 mm (0.0020 in)
1st: 12 Nm (1.2 m · kg, 8.7 ft · lb)
2nd: 20 Nm (2.0 m · kg, 14 ft · lb)