Tensioner - Stihl MS 270 User Manual

3.5 Tightening Torques
DG and P screws (Plastoform) are used in polymer and light-alloy 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 detrimentally affecting the strength of the screwed assembly, providing the specified
tightening torque is observed.
For this reason always use a torque wrench.
Fastener Thread
size
Spline screw IS-M4x8
Countersunk screw IS-PT4x12
Spline screw IS-B3.9x13
Spline screw IS-M8x22
Spline screw IS-P4x10
Collar screw IS-M10/M8
Collar screw IS-M8x21.5 Guide bar/crankcase
Spline screw IS-DG4x16
Decompression
valve IS-M10x1
Collar nut M5
Spline screw IS-B4.2x9.5 Screen/muffler
Spline screw IS-DG5x24
Spline screw IS-DG5x24
Spline screw IS-DG5x24
Spline screw IS-DG5x18
Spline screw IS-DG5x18
Spline screw IS-DG5x24
Remarks:
1) Special accessory
2) Only machines with quick chain adjuster
3) Secure screw with Loctite 243
4) Only machines with QuickStop Super
5) Secure screw with Loctite 270
6) With quick chain adjuster
7) Only machines without quick chain adjuster
8) Without quick chain adjuster
9) Only muffler with spark arresting screen
6
For component
Cover plate, chain tensioner/crankcase
Cover plate/chain sprocket cover
Cover plate/fan cover
Brake band/crankcase
Brake cable, support/tank housing
Guide bar/crankcase
Cover/crankcase
Decompression valvel
Filter base/baffle/carburetor
Hand guard, sleeve/fan cover
Shroud/crankcase
Shroud/fan housing
Chain catcher/crankcase
Spiked bumper/crankcase
Fan cover/fan housing
Torque Remarks
Nm
1)
3.0
2)
2.5
1.5
3)
10.0
4)
1.0
2) 5) 6)
30.0
7) 3) 8)
23.0
3.0
14.0
5.0
9)
2.0
4.0
4.5
4.5
9.0
9.0
4.0
MS 270, MS 280