Table Of Contents - Husqvarna K770 Workshop Manual

1 Introduction
1.1 Document description............................................ 3
1.2 Outline....................................................................3
1.3 Target group...........................................................3
1.4 Revisions................................................................3
1.5 Safety..................................................................... 3
1.6 Servicing tools........................................................3
2 Safety
2.1 Safety definitions....................................................4
2.2 General safety instructions.....................................4
2.3 Symbols on the product......................................... 4
3 Servicing data
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 Servicing tools
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
2
Contents
6 Repair and servicing
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 Troubleshooting
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 Wiring diagram - Dry Cut
8.1 Wiring diagram OilGuard......................................79
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