Kubota SM-E4B Series User Manual

ENGINE
SM-E4B SERIES, WSM
1-S12
3. TIGHTENING TORQUES
Screws, bolts and nuts must be tightened to the specified torque using a torque wrench, several screws, bolts and
nuts such as those used on the cylinder head must be tightened in proper sequence and the proper torque.
9Y1210785ENS0003US0
[1] TIGHTENING TORQUES FOR GENERAL USE SCREWS, BOLTS
AND NUTS
When the tightening torques are not specified, tighten the screws, bolts and nuts according to the table below.
Screw and bolt material grades are shown by numbers punched on the screw and bolt heads. Prior to tightening,
be sure to check out the numbers as shown below.
9Y1210785ENS0004US0
Indication on
top of bolt
No-grade or 4T 7T
Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft
M6 7.9 to 9.3 0.80 to 0.95 5.8 to 6.8 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
M8 18 to 20 1.8 to 2.1 13 to 15 24 to 27 2.4 to 2.8 18 to 20
M10 40 to 45 4.0 to 4.6 29 to 33 48 to 55 4.9 to 5.7 36 to 41
M12 63 to 72 6.4 to 7.4 47 to 53 78 to 90 7.9 to 9.2 58 to 66
Punched number Screw and bolt material grade
None or 4 Standard screw and bolt SS41, S20C
7 Special screw and bolt S43C, S48C (Refined)
KiSC issued 01, 2013 A

Kubota SM-E4B Series Specifications

General

Brand	Kubota
Model	SM-E4B Series
Category	Engine
Language	English