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Yamaha YZ250F(E) User Manual

Yamaha YZ250F(E)
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CYLINDER HEAD
5-21
EAS1SM1218
INSTALLING THE CYLINDER HEAD
1. Install:
Timing chain guide (intake side) “1”
Dowel pin “2”
Cylinder head gasket “3”
Cylinder head “4”
TIP
Install the cylinder head gasket with its char-
acter stamp “a” rearward of the vehicle as
shown.
While pulling up the timing chain, install the
timing chain guide (intake side) and the cylin-
der head.
2. Install:
Washer “1”
Cylinder head bolt “2”
Cylinder head nut “3”
3. Tighten:
Cylinder head bolt “1” – “4”
Cylinder head nut “5”, “6”
TIP
Apply molybdenum disulfide grease to the
threads and contact surfaces of the bolts and
to both contact surfaces of the washers.
Tighten the bolts and nuts to the specified
torque in two or three steps in the proper tight-
ening sequence as shown.
Cylinder head bolt “1” – “4”
33 Nm (3.3 m·kgf, 24 ft·lbf)
Cylinder head nut “5”, “6”
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
New
1
2
2
4
3
a
1
3
2
2
T
R
.
.
1
5
6
4
2
3
FWD
x2 x4

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Yamaha YZ250F(E) Specifications

General IconGeneral
BrandYamaha
ModelYZ250F(E)
CategoryMotorcycle
LanguageEnglish

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