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DG and P-type (Plastoform) screws are used in thermoplastic and alloyed materials. 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 be removed and refitted as often as desired. The strength of the screw connection is not impaired if the spe-
cified tightening torque is maintained.
It is therefore essential to use a torque wrench.
Fastener
Thread
For component
Tightening torque
Remarks
size
(Nm)
Spline screw
IS-M5x25
Crankcase
9.5
Spline screw
IS-M5x25
Spacer flange/cylinder
5.5
1)
Spline screw
IS-DG 5x24
Cylinder/crankcase
9.5
Spline screw
IS-M5x16
Muffler/cylinder
9.5
Spline screw
IS-M5x16
Muffler/crankcase
9.5
Spline screw
IS-M5x16
Tensioner/spacer flange
3.5
Spline screw
IS-M5x16
Fan housing/crankcase
5.5
Spline screw
IS-M5x16
Starter/crankcase
5.5
Spline screw
IS-M4x20
Ignition module/cylinder
4.5
Spline screw
IS-M5x16
Shroud/fan housing
3.5
Spline screw
IS-M5x16
Shroud/starter cover
3.5
M8
Clutch
21.0
M8
Starter carrier
20.0
M14x1.25
Spark plug
20.0
Plastoform screw
IS-P5.5x12
Rope rotor in starter cover
3.5
Spline screw
IS-M5x16
AV sleeve (clamping screw)
5.5
Spline screw
IS-DG5x12
AV sleeve/protective tube
2.5
Nut
M5
Filter housing/carburetor
4.0
Spline screw
IS-M5x18
Clamping collar/bearing housing
6.5
2)
Self-tapping screw
IS-B3.5x9.5
Bearing housing/protective tube
3.0
2)
Spline screw
IS-M5x33
Clamping collar/guard
4.5
2)
Stud bolt
Detent spring/slide control
1.0
Spline screw
IS-M5x16
Control handle, clamping collar/
protective tube (looped handle)
3.5
2)
Spline screw
IS-M6x50
Looped handle/protective tube
3.5
2) 4)
Spline screw
IS-DG5x16
Looped handle/handle hose
2.5
2) 4)
Spline screw
IS-M6x25
Bracket, looped handle/protective tube
4.5
3)
Spline screw
IS-M4x19
Control handle/handle mouldings
(looped handle)
1.0
Spline screw
IS-M5x16
Control handle, clamping collars/
protective tube
3.5
Plastoform screw
IS-P6x14
Line limiter blade/guard
2.5
2)
Spline screw
IS-DG5x24
Gear housing/protective tube
9.0
3)
Spline screw
IS-M6x20
Gear housing/protective tube
7.5
4)
Screw plug
M11x10
Gearbox
10.0
7