Tightening Torques - Stihl BGA 85 User Manual

3.6

Tightening Torques

DG and P (Plastoform) screws are used in polymer and light metal components. These screws form a
permanent thread when they are installed for the first time. They can be removed and installed as often as
necessary without impairing the strength of the screwed assembly, providing the specified tightening torque is
observed.
For this reason it is essential to use a torque wrench.
Fastener
Screw
Screw
Screw
1)
Binding head, micro-encapsulated
Use the following procedure when refitting a DG or P screw in an existing thread:
Place the screw in the hole and rotate it counterclockwise until it drops down slightly.
Tighten the screw clockwise to the specified torque.
This procedure ensures that the screw engages properly in the existing thread and does not form a new thread
and weaken the assembly.
Power screwdriver setting for polymer: DG and P screws max. 500 rpm
Do not use an impact wrench for releasing or tightening screws.
6
Thread size For component
P 5x18 Blower housing, left / right
P 5x18 Left handle molding / right handle molding
M 5x10 Ball bearing / motor shaft
Torque Remarks
Nm
3,0
3,0
1)
6,0
BGA 85