Stihl MS 240 Instruction Manual page 9

Fastener
Screw
Nut
Screw
Screw
Screw
Nut
Screw
Screw
Remarks:
1) Loctite 242 or 243, medium strength
2) Loctite 270, high strength
3) Degrease crankshaft/flywheel and mount oil-free
4) Screws with binding head
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.
Coat micro-encapsulated screws with medium strength Loctite 242 or 243 before reinstalling.
Power screwdriver setting for polymer: DG and P screws max. 500 rpm
Do not use an impact wrench for releasing or tightening screws.
Do not mix up screws with and without binding heads.
8
Thread size For component
M 5x12 Muffler/crankcase/cylinder (MS 240)
M 8x1 Flywheel
M 4x8 Side plate/crankcase
M 4x16 Side plate/crankcase (quick chain tensioner)
M 3x20 Clamp/manifold
M 5x8.5 Stud/cylinder
M 5 Carburetor
M 5x20 Cylinder/crankcase
M 14x1.25 Spark plug
M 5x20 Ignition module/crankcase (micro-
encapsulated)
Torque Remarks
Nm
10.0 1), 4)
33.0 3)
3.0 4)
3.0
0.5
1.4 2)
3.5
11.0 2), 4)
25.0
7.0 4)
MS 240, MS 260, MS 260 C