Yamaha F15A - General Tightening Torque

SPEC
TIGHTENING TORQUE (F9.9C)
2-22
E
GENERAL TIGHTENING TORQUE
This chart specifies tightening torques for
standard fasteners with a standard ISO
thread pitch. Tightening torque specifica-
tions for special components or assemblies
are provided in applicable sections of this
manual. To avoid warpage, tighten multi-
fastener assemblies in a crisscross fashion
and progressive stages until the specified
tightening torque is reached. Unless other-
wise specified, tightening torque specifica-
tions require clean, dry threads.
Components should be at room tempera-
ture.
B
A
Nut A Bolt B
Nm m•kg ft•lb
8 mm M5 5.0 0.5 3.6
10 mm M6 8.0 0.8 5.8
12 mm M8 18 1.8 13
14 mm M10 36 3.6 25
17 mm M12 43 4.3 31
General torque
specifications
Part to be tightened
Part Thread
Q’ty
Tightening torque
name size Nm m•kg ft•lb
Oil drain plug Bolt M14 1 27 2.7 19.5
Exhaust manifold Bolt M6 2 11 1.1 8.0
Propeller Nut M10 1 17 1.7 12.3
Water inlet cover Screw M5 1 5 0.5 3.6
ELECTRICAL
Oil pressure switch Bolt — 1 8 0.8 5.8
Starter motor terminal (A = 7/16") Nut 1/4" 1 9 0.9 6.5
Starter motor through bolt (A = 3/8") Bolt 3/16" 2 8 0.8 5.8