Stihl 034 Series User Manual page 6

3.5 Tightening Torques
DG and P (Plastoform) screws are used in polymer and lightmetal 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 Thread size For component
Pan head screw M4x8
M7x12.5
Screw M8x22
Self-tapping screw B3.9x13
Collar screw M8x21.5
Spline screw IS-M4x12
M10x1
Spline screw M3.5x12
Spline screw IS-P6x21.5
Spline screw IS-P6x19
Spline screw IS-P6x32,5
Spline screw IS-P6x21,5
Spline screw IS-P4x19
Screw assembly M5x30
Spline screw IS-P6x19
Spline screw IS-M5x12
Spline screw IS-M5x20
Spline screw IS-M5x20
M12x1 L
Screw HL6x18.5
Spline screw IS-P6x19
Spline screw IS-M5x6
Spline screw IS-M5x25
Spline screw IS-M5x16
Spline screw IS-M5x25
Spline screw IS-M5x20
Spline screw IS-M5x22
Slotted nut M5
Slotted nut M5
M8x1
Setscrew M5x8.5
Setscrew M5x8.5
6
Chain tensioner cover plate
Starter post to fan housing
Brake band/crankcase
(036 QS II)
Brake cable retainer/tank housing (036 QS II)
Guide bar
Cover, chain brake/crankcase
Decompression valve (036, 036 QS)
Generator (W version)
Front handle/tank housing, top right
(W version)
Front handle/tank housing, bottom
(W version)
Front handle/tank housing, top right, polymer
Front handle/tank housing, bottom, polymer
Handle molding
Hand guard, left
Chain catcher
Spiked bumber
Crankcase
Fan housing/crankcase
Carrier
Annular buffer to rear left/right of tank housing
Annular buffer to front right of tank housing
Muffler, upper/lower casing
Muffler/crankcase
Muffler/cylinder (036, 036 QS)
Muffler/crankcase (034)
Muffler/cylinder (034)
Muffler/cylinder (034/Z version)
Shroud
Air filter
Flywheel
Setscrew, l/h side of cylinder
Setscrew, r/h side of cylinder
Torque Remarks
Nm
3.0
12.0 1)
10.0 2)
1.5
23.0 2)
3.0
14.0
2.0 3)
7.0 3)
7.0 3)
5.0 3)
5.0 3)
1.6
7.0 2)
2.8
7.5
9.0
7.0
50.0
5.0
5.0
6.5 2)
10.0 2)
10.0 2)
10.0 4)
10.0 4)
10.0 4)
3.3
2.0
33.0 6)
1.4 5)
1.4
034, 036, 036 QS