Canon Inner Finisher-K1 Service Manual page 9

In the case of a screw hole with a triangle mark near it as shown in the figure below, strongly tightening the screw may damage
or deform the screw hole.
In the case of a screw hole with a triangle mark, take care not to apply too much force when tightening the screw.
The recommended torque value is shown below as a reference value.
Fastened member Metal
Tightening M4 Approx.
torque 1.6
(N*m)
M3 Approx.
0.8
* For PCB, refer to the tightening torque value of resin (fastened member).
RS tight
Resin Metal
Approx. Approx.
1.6 1.6
Approx. Approx.
0.8 0.6
RS tight W Sems
Type of Screws
W Sems
Resin Metal
Approx. Approx.
0.8 1.6
Approx. Approx.
0.6 0.6
Type of Screws
Binding
3
Safety Precautions
Binding
Resin Metal
Approx. Approx.
0.8 1.6
Approx. Approx.
0.6 0.6
TP
TP
Resin
Approx.
0.8
Approx.
0.6