Table Of Contents - Husqvarna K770 SmartGuard Workshop Manual

1 Introduction
1.1 Document description............................................ 3
1.2 Target group...........................................................3
1.3 Revisions................................................................3
1.4 Safety..................................................................... 3
1.5 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................................................. 6
4 Servicing tools
4.1 Servicing tools overview.......................................10
4.2 Servicing tools overview.......................................11
4.3 Servicing tools overview.......................................12
5 Product overview for repair and servicing
5.1 Components.........................................................13
5.2 Basic modules of the product...............................14
6 Repair and servicing
6.1 Starter.................................................................. 22
6.2 Ignition system..................................................... 25
6.3 Flywheel............................................................... 29
6.4 Air filter................................................................. 30
6.5 Fuel system..........................................................31
6.6 Carburetor............................................................ 33
6.7 Decompression valve...........................................42
6.8 Cylinder and piston.............................................. 43
6.9 Piston wear.......................................................... 46
6.10 To assemble the piston...................................... 47
6.11 To assemble the cylinder................................... 48
6.12 Crankcase.......................................................... 48
6.13 Clutch................................................................. 54
6.14 Cutting head.......................................................57
6.15 Wet system........................................................ 65
6.16 Throttle trigger and throttle trigger lockout......... 67
6.17 OilGuard.............................................................68
2
Contents
7 Troubleshooting
7.1 Engine does not start........................................... 70
7.2 Engine stops during operation - no sparks...........71
7.3 Engine stops during operation............................. 71
7.4 Weak output or change of speed......................... 72
7.5 Other engine problems.........................................72
8 Wiring diagram
8.1 Wiring diagram OilGuard......................................73
1453 - 001 - 02.04.2020