Stihl MS 650 Manual page 8

Fastener
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Nut
Screw
Screw
Screw
Remarks:
1) Loctite 243, medium strength
2) Install with Hylomar sealant (0783 810 1101)
3) Left-hand thread
4) Degrease crankshaft/flywheel faces and install dry
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 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 screwdriver for releasing or tightening screwed assemblies.
Do not mix up screws with and without binding heads.
MS 650, MS 660
Thread size For component
IS-M5x20 Fan housing, magnesium
M12x1 L Clutch carrier
IS-M4x12 Oil pump
P6x19 Annular buffer
IS-M5x16 Annular buffer/tank housing, top right
IS-M5x12 Annular buffer plate
IS-M5x20 Wrap-around handle with bracket
M5x 6 Muffler, bottom
IS-M6x20 Muffler, bottom/crankcase
M5x16 Muffler/cylinder
P4x10 Guard/tank housing
M10x1 Flywheel
IS-M4x10 Segment/fan housing
IS-M4x8 Inner side plate
M5 Carburetor
M14x1.25 Spark plug
M5x20 Ignition module
M6x25 Cylinder/crankcase,
0.5 mm gasket
M6x25 Cylinder/crankcase,
1 mm gasket
Torque Remarks
Nm
7.0
70.0 3)
3.0 2)
6.0
7.0 1)
9.0 1)
7.0
6.5 1)
15.0 1)
11.5 1)
2.0
45.0 4)
2.5
3.0
3.5
25.0
8.0
15.0
15.0
7