Contents
3.1 Symbols in the diagrams........................................5
3.2 Tightening torques K770 Vac/Dry Cut....................6
3.3 Tightening torques K770 Vac/Dry Cut....................7
3.4 Tightening torques K770 Dry Cut...........................8
3.5 Tightening torques K770 Vac.................................9
3.6 Tightening torques K770 Dry Cut.........................10
3.7 Tightening torques K770 Vac...............................11
4.1 Servicing tools overview.......................................12
4.2 Servicing tools overview.......................................13
4.3 Servicing tools overview.......................................14
5 Product overview for repair and servicing
5.1 Product overview Dry Cut.................................... 15
5.2 Product overview Vac.......................................... 16
5.3 To disassemble into basic modules..................... 17
6.1 Starter.................................................................. 24
6.2 Ignition system..................................................... 27
6.3 Flywheel............................................................... 31
6.4 Air filter................................................................. 32
6.5 Fuel system..........................................................34
6.6 Carburetor............................................................ 36
6.7 Decompression valve...........................................44
6.8 Cylinder and piston.............................................. 46
6.9 Piston wear.......................................................... 49
6.10 To assemble the piston...................................... 50
6.11 To assemble the cylinder................................... 51
6.12 Crankcase.......................................................... 51
6.13 Clutch................................................................. 57
6.14 Cutting head.......................................................60
6.15 Gearbox............................................................. 62
6.16 Fan - Dry Cut .....................................................65
6.17 Dust bag - Dry Cut............................................. 70
6.18 Throttle trigger and throttle lock......................... 72
6.19 OilGuard - Dry Cut............................................. 73
7.1 Engine does not start........................................... 75
7.2 Engine stops during operation - no sparks...........76
7.3 Engine stops during operation............................. 76
7.4 Weak output or change of speed......................... 77
7.5 Other engine problems.........................................77
7.6 Dust......................................................................78
8.1 Wiring diagram OilGuard......................................79
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