Stihl TS 400 Manual page 5

STIHL TS 400
2.6 Tightening torques
DG screws are screwed into plastic and light metal parts. These screws cut a thread in the material when they are screwed
in for the first time. The material is permanently deformed. The screws can then be removed at will and retightened without
impairing the strength of the screw connection, provided that the specified tightening torque is maintained. It is therefore
essential to use a torque wrench.
Connecting
element
Groove-headed screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Nut
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Grub screw
Nut
Nut
Driver
Nut
When screwing the DG screws into an existing screw thread:
- Insert the DG screw in the hole and turn counterclockwise until it gently drops into the hole in axial direction.
- Turn the screw clockwise and tighten with the specified torque.
This procedure guarantees that the screw engages in the existing screw thread without cutting a new thread and thus
prevents the strength of the screw connection being weakened.
1) Secure screw with adhesive 0786 111 1109 (Loctite 270).
2) A washer must be fitted under the head of the screw.
Note: Screws secured with adhesive must be heated with a hot-air fan (drier) in order to release them.
Great care must be exercised with plastic parts!
Size of For component
thread
IS-DG 4x14
Starter cover
IS-DG 4x15
Handle moulding / handle
IS-DG 4x15
Retainer, stop rods
IS-DG 5x20
Handle / handle mount
IS-DG 5x20
Tank housing left / right
M5 Filter base / carburetor
IS-M 5x16
Cover, clamp / cast arm
IS-M 5x16 Handle / tank housing
IS-M 5x16 Air guide cover / crankcase
IS-M 5x16 Muffler / crankcase
IS-M 5x16 Muffler / cylinder
IS-M 5x20 Cast arm / crankcase
IS-M 5x20 Filter base / crankcase
IS-M 5x20 Filter housing / filter base
IS-M 5x20 Shroud / tank housing
IS-M 5x20 Crankcase left / right
IS-M 5x20 Fan cover / tank housing
IS-M 5x20 Starter cover / cast arm
IS-M 5x20 Cylinder / crankcase
IS-M 5x20 Ignition module / crankcase
IS-M 5x25 Support / handle / tank housing
IS-M 6x16 AV element, cast arm / handle
IS-M 6x16 AV element, tank housing / cast arm
IS-M 6x16 AV element, tank housing / crankcase, left
M 5x55 Tank housing / carburetor
M 8x1 Flywheel
M 8x1 Starter wheel
M 12x1 L Clutch
M 14x1.25
Spark plug
M 10x.. L
V-belt pulley / bearing
Decompression valve
Tightening torque Remark
(Nm)
1.8 1)
1.8
1.8
8.0
7.5
3.5
4.5
8.0
4.5
10.0
10.0
10.0
6.0
4.0
6.0
10.0
6.0
6.0
10.0
8.0 2)
8.0
6.0
6.0
6.0
4.0
30.0
23.0
40.0
27.5
37.5
14.0
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