Tightening Torques For Standard Bolts And Nuts; Tightening Fasteners - Yanmar 6LPA-STP2 Service Manual

GENERAL SERVICE INFORMATION

TIGHTENING TORQUES FOR STANDARD BOLTS AND NUTS

Tightening Fasteners

Use the correct amount of torque when tightening
the fasteners. Applying excessive torque may
damage the fastener or component and not enough
torque may cause a leak or component failure.
N·m 11.0 ± 1.0
kgf·m
lb-ft
lb-in.
3-30
Hexagon Bolts and Nuts Torque
M6 X 1.0 M8 X 1.25
26.0 ± 3.0
1.1 ± 0.1 2.7 ± 0.3
- 19.0 ± 2.1
96 ± 9.0 -
© 2007 Yanmar Marine International
Tightening Torques for Standard Bolts and Nuts
NOTICE: The tightening torque in the Standard
Torque Chart should be applied only to the bolts
with a "7" head (JIS strength classification: 7T).
Apply 60% torque to bolts that are not listed. Apply
80% torque when tightened to aluminum alloy.
Bolt diameter x pitch (mm)
M10 X 1.5 M12 X 1.75
50.0 ± 5.0 90.0 ± 10.0
5.1 ± 0.5 9.2 ± 1.0
37 ± 3.6 66.0 ± 7.2
- -
6LPA Service Manual
M14 X 1.5 M16 X 1.5
140.0 ± 10.0 230.0 ± 10.0
14.3 ± 1.0 23.5 ± 1.0
103 ± 7.2 170 ± 7.2
- -