Screw Fasteners - Husqvarna Automower 420 Workshop Manual

Every Every Action
year 3rd year
Open the chassis and replace the chassis seal-
X
ing strips.

7.2 Screw fasteners

All screws are made from stainless material or rustproofed with zinc plating. Article numbers are found in the spare
parts list (IPL).
The tightening torque must be attained, otherwise there is not a satisfactory seal against moisture etc.
Fastener
Upper to lower chassis
Top cover to body (430X/430XH/450X/
450XH/520/550/550H)
Front bumper to body (430XH/450XH/
550H)
Rear bumper to body
Rear bumper to body, 2 outer screws
(430XH/450XH/550H)
Wheel brush holders (430XH/450XH/
550H)
Center console to upper chassis, from in-
side
Center console to upper chassis, from out-
side (430XH/450XH/550H)
Holder charging strips
Buzzer
Joystick front to the upper chassis
Joystick rear to the upper chassis
Stud joystick
Joystick bracket
Housing and support for START/STOP
button (420/430X/440/430XH/450X/
450XH)
Holders STOP button (520/550/500H)
Circuit board holder
Communication circuit board
Battery holder
Service plug
Wheel motor to lower chassis
Front wheel
Rear wheel
Rear wheel (520/550/500H)
Blade disc
Blade disc bearing
Blades
1191 - 001 -
Hardware
Screw, 5 x 16 mm
Screw gray, 4 x 14 mm
Screw, 5 x 16 mm
Screw, 5 x 16 mm
Screw, 5 x 16 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw, 5 x 16 mm
Screw, 5 x 16 mm
Nut, M6
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw gray, 4 x 14 mm
Screw, 5 x 16 mm
Screw, 5 x 16 mm
Screw, 5 x 16 mm
Screw gray, 4 x 14 mm
Nut, M16
Screw gray, 4 x 14 mm
Screw, M4 x 8 mm
Screw, M6 x 8 mm
Screw, M4 x 10 mm
Explanation
Refer to To replace the sealing strips on page
40 .
Tool
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
13 socket wrench
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
Torx 20
24 socket wrench
Torx 20
Cross screwdriver
Allen key 4
Flat/cross screwdriver
Tightening
torque (Nm)
1.6
1.3
1.8
1.3
1.8
1.3
1.2
1.3
1.3
0.6
3
1.2
2.5
1.4
1.2
1.2
0.8*/1.3**
1.0
1.5
1.0
1.6
1.2
18
1.2
1.8
5.5
1.8
Service - 43