TIGHTENING TORQUES
2-15
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
Thread
size
Q’ty Tightening torque Remarks
Spark plug M10 2 13 Nm (1.3 m•kg, 9.4 ft•lb)
Cylinder head cover M6 10 10 Nm (1.0 m•kg, 7.2 ft•lb)
Camshaft cap M6 12 10 Nm (1.0 m•kg, 7.2 ft•lb)
Cylinder head and cylinder body M9 4 35 Nm (3.5 m•kg, 25 ft•lb)
Cylinder head and cylinder body M9 2 46 Nm (4.6 m•kg, 33 ft•lb)
Cylinder head and cylinder body M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Cylinder head (exhaust pipe) M8 4 15 Nm (1.5 m•kg, 11 ft•lb)
Cylinder body M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Connecting rod cap M7 4 See NOTE*1
Connecting rod cap (balancer) M9 2 60 Nm (6.0 m•kg, 43 ft•lb)
Balancer piston cylinder M10 4 58 Nm (5.8 m•kg, 42 ft•lb)
A.C. magneto rotor M18 1 See NOTE*2
Timing chain tensioner M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Timing chain tensioner cap bolt M6 1 7 Nm (0.7 m•kg, 5.1 ft•lb)
E
E
M
M
LT
E
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