Husqvarna K 535i Instruction manual

Workshop manual
K 535i
English
744 - 002 -

Contents
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 Special safety instructions......................................4
2.4 Symbols on the product......................................... 4
3 Servicing data
3.1 Symbols in the diagrams........................................5
3.2 Tightening torques ................................................ 5
4 Servicing tools
4.1 Servicing tools overview.........................................7
5 Product overview for repair and servicing
5.1 Product overview....................................................8
6 Repair instructions
6.1 To clean and examine the product parts................9
6.2 To repair damaged threads....................................9
6.3 Wet system............................................................ 9
6.4 Handle half........................................................... 10
6.5 Power trigger........................................................10
6.6 Main switch.......................................................... 11
6.7 Control unit...........................................................12
6.8 Keypad................................................................. 13
6.9 Drive belt ............................................................. 14
6.10 Pulleys................................................................15
6.11 Motor.................................................................. 15
6.12 Cutter arm.......................................................... 16
6.13 Front ground support..........................................17
6.14 Impeller.............................................................. 17
6.15 To disassemble the impeller.............................. 17
6.16 To assemble the impeller................................... 17
6.17 Blade shaft bearings ......................................... 17
6.18 Motor shaft bearing............................................ 19
7 Troubleshooting
7.1 To connect the common service tool................... 20
7.2 To do troubleshooting of the common service
tool............................................................................. 20
7.3 Troubleshooting of the product............................ 20
7.4 Troubleshooting of the battery and battery
charger....................................................................... 22
7.5 Troubleshooting appendix ...................................23
7.6 Troubleshooting of the battery connector.............24
2744 - 002 -

1 Introduction
1.1 Document description
This manual gives a full description of how to do
maintenance and repair on the product. It also gives
safety instructions that the personnel must obey.
1.2 Target group
This manual is for personnel with a general knowledge
of how to do repair and do servicing. All personnel that
do repair or do servicing on the product must read and
understand the manual.
1.3 Revisions
Changes to the product can cause changes to the
maintenance work and spare parts. Separate
information is sent out for each change.
Read the manual together with all received information
about changes to maintenance and spare parts for the
product.
1.4 Safety
WARNING: All personnel that repair or do
servicing on the product must read and
understand the safety instructions in this
workshop manual.
1.5 Servicing tools
The manual gives information about necessary servicing
tools. Always use original tools from Husqvarna.
744 - 002 - Introduction - 3

2 Safety
2.1 Safety definitions
Warnings, cautions and notes are used to point out
specially important parts of the manual.
WARNING: Used if there is a risk of injury or
death for the operator or bystanders if the
instructions in the manual are not obeyed.
CAUTION: Used if there is a risk of damage to
the product, other materials or the adjacent area
if the instructions in the manual are not obeyed.
Note: Used to give more information that is necessary in
a given situation.
2.2 General safety instructions
WARNING: Read the warning instructions that
follow before you use the product.
The service center that repairs the product must have
safety devices that obey local regulations. Warnings and
cautions are used to point out specially important parts
of the workshop manual.
2.3 Special safety instructions
• Apply a new warning label if a warning symbol on
the product is damaged or missing.
• Do not use accessories or spare parts that are not
approved by the manufacturer. Do not do changes
that are not approved by the manufacturer. This can
cause injury or death to the operator or other
persons.
• Use protective gloves and eye protection. Approved
protective goggles must agree with the ANSI Z87.1
standard in the USA or EN 166 in EU countries.
• When you use compressed air, do not point the
airflow in the direction of your body. Air can go into
the blood circulation and kill you.
• Use approved hearing protection. Noise from the
product can result in permanent hearing loss.
• The product can cause sparks. Do not operate the
product near flammable materials.
2.3.1 To remove the battery
WARNING: Always remove the battery before
you do repairs or do servicing on the product.
WARNING: Do not put the battery back until the
product is assembled.
1. Press in the catches (1) and remove the battery (2).
2
1
1
2.4 Symbols on the product
Start/Stop
savE / Battery save mode
Warning lamp/Fault indicator
Read the manual carefully and make sure
you understand the instructions before
using the product.
Always put on personal protective
equipment:
WARNING! Kickbacks can be sudden,
fast and can cause injuries. Read and
understand the instructions in the manual
before using the product.
WARNING! Dust from cutting can cause
breathing problems. Use breathing
protection. Do not breathe exhaust fumes.
Always make sure there is good airflow.
WARNING! Sparks from the cutting blade
can cause a fire in materials such as,
gasoline, wood, fabric and dry grass.
WARNING! Do not use circular saw
blades.
Make sure the cutting disc is not
damaged.
4 - Safety 744 - 002 -

3 Servicing data
3.1 Symbols in the diagrams
Tightening torque, Nm
Torx
Bolt
3.2 Tightening torques
T10
0.8-1
T27
4-5
T10
0.8-1
744 - 002 - Servicing data - 5

T27
3.5-4
T27
6-7
T27
3-3.5
T27
2-3
T27
2-3
T27
5-6
13
26-30
13
26-30
T27
5-6
T27
2-2.5
T27
5-6
7-8
T27
4-4.5
T27
13
3-10
6 - Servicing data 744 - 002 -

4 Servicing tools
4.1 Servicing tools overview
13 2
4 65
7
10
8 9
Position Designation Used for Order No./
Source
1 Combination wrench General. 506 38 26-01
2 Bearing press To assemble the motor shaft bearing. 504 56 79-01
3 Wrench To disassemble and assemble the drive belt pulley. 596 51 18-01
4 Diagnostic Tool Kit Troubleshooting. 583 89 71-01
5 Adapter cable for battery Troubleshooting. 579 62 13-01
6 Belt assembly tool To install and remove the drive belt. 596 55 26-01
7 Bearing press To assemble blade shaft bearings. 596 83 49-01
8 Adapter for bearing press To assemble blade shaft bearings. 596 83 50-01
9 Key Torx T10 General. 502 71 27-02
10 Internal bearing extractor To remove bearings. SKF TMIC 7-28
744 - 002 - Servicing tools - 7

5 Product overview for repair and servicing
5.1 Product overview
23
22
21
1314
12
11
20
4
10
5 6
31 2
18 17 16
19
7
8
9
15
1. Power trigger lockout
2. Power trigger
3. Water valve
4. Water nozzle
5. Cutting blade (not included)
6. Cutter arm
7. SavE button
8. Warning indicator
9. Start and stop button
10. Handle half
11. Rear ground support with a rope eyelet
12. Battery slot
13. Fan housing
14. Front handle
15. Belt guard
16. Front ground support
17. Type plate
18. Water connection with filter
19. Button, battery status
20. Battery status
21. Warning indicator
22. Battery release button
23. Battery (not included)
8 - Product overview for repair and servicing 744 - 002 -

6 Repair instructions
6.1 To clean and examine the product parts
• Clean and examine all parts fully. You find more
instructions in the chapter for each part if special
tools or procedures are necessary.
• Replace damaged or defective parts.
• Always use original spare parts.
6.2 To repair damaged threads
1. If the plastic threads in the chassis are damaged,
make a hole with a 4.5 mm drill bit.
2. Replace the original screw with the screw 503 21
74-16 - IHSCT MT5x16.
6.3 Wet system
6.3.1 Wet system function
Each side of the blade guard has a spray nozzle. The
water hits a section of the cutting blade and the
centrifugal force moves it out to the edge.
6.3.2 To remove the wet system
1. Remove the handle.
2. Remove the screws that hold the spray nozzles.
3. Remove the hose from the notches on the housing.
744 - 002 - Repair instructions - 9

4. Remove the screw that holds the valve.
5. Remove the wet system.
6. Remove the filter with a wood screw.
6.3.3 To assemble the wet system
1. Push the filter fully into the connector. Push against
a flat surface.
2. Assemble in the opposite sequence of To remove
the wet system on page 9 .
6.4 Handle half
6.4.1 To disassemble the handle half
1. Disassemble the wet system. Refer to To remove
the wet system on page 9 .
2. Remove the handle half.
6.5 Power trigger
6.5.1 To disassemble the power trigger
1. Disassemble the wet system. Refer to
To remove
the wet system on page 9 .
2. Disassemble the handle half. Refer to To
disassemble the handle half on page 10 .
10 - Repair instructions 744 - 002 -