Yamaha XT250X 2008, Руководство по обслуживанию, Страница: 32 / 282

TIGHTENING TORQUES
2-13
EAS20320
TIGHTENING TORQUES
EAS20330
GENERAL TIGHTENING TORQUE
SPECIFICATIONS
This chart specifies tightening torques for stan-
dard fasteners with a standard ISO thread pitch.
Tightening torque specifications for special com-
ponents or assemblies are provided for each
chapter of this manual. To avoid warpage, tight-
en multi-fastener assemblies in a crisscross pat-
tern and progressive stages until the specified
tightening torque is reached. Unless otherwise
specified, tightening torque specifications re-
quire clean, dry threads. Components should be
at room temperature.
EAS20340
ENGINE TIGHTENING TORQUES
A. Distance between flats
B. Outside thread diameter
A (nut) B (bolt)
General tightening torques
Nm m•kg ft•lb
10 mm 6 mm 6 0.6 4.3
12 mm 8 mm 15 1.5 11
14 mm 10 mm 30 3.0 22
17 mm 12 mm 55 5.5 40
19 mm 14 mm 85 8.5 61
22 mm 16 mm 130 13.0 94
Item
Threa
d size
Q’ty Tightening torque Remarks
Camshaft sprocket cover bolt M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Timing chain tensioner bolt M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Intake manifold bolt M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Air induction system pipe M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Cylinder bolt M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Clutch cover bolt M6 13 10 Nm (1.0 m•kg, 7.2 ft•lb)
Oil filter element drain bolt M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Generator rotor cover bolt M6 9 10 Nm (1.0 m•kg, 7.2 ft•lb)
Speed sensor bolt M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Crankcase bolt M6 12 10 Nm (1.0 m•kg, 7.2 ft•lb)
Drive sprocket cover bolt M6 3 10 Nm (1.0 m•kg, 7.2 ft•lb)
Cylinder head bolt (226 mm) M8 4 22 Nm (2.2 m•kg, 16 ft•lb)
Cylinder head bolt (45 mm) M8 2 20 Nm (2.0 m•kg, 15 ft•lb)
Camshaft retainer bolt M6 1 8 Nm (0.8 m•kg, 5.8 ft•lb)
Tappet cover M55 2 18 Nm (1.8 m•kg, 13 ft•lb)
LT
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