Husqvarna 536LiBX Instruction manual

Workshop Manual
English
436LiB / 536LiB / 536LiBX
Up to S/N: 20180100001

English – 3
Workshop Manual
Husqvarna 436LiB / 536LiB / 536LiBX
Table of contents
Index ................................................................................................. 4
Introduction and Safety Instructions ................................... 6
Technical Data .............................................................................10
Service Tools.................................................................................11
Service Data..................................................................................12
Basic Dismantle/Assembly......................................................16
Repair Instructions.....................................................................20
Diagnosis and Troubleshooting............................................35
Table of contents
Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify
the design and appearance of products without prior notice.

4 – English
Index
Index
B
Basic dismantle/assembly 16, 17, 18
C
Chain brake
Dismantling the chain brake 17, 22, 23, 25, 35
Controller
Assembling the control unit 31
Dismantling the control unit 31
E
ESD
Dismantling/assembling ESD 22
I
Introduction and safety regulations 7
General 7
General directions 8
Numbering 7
Revisions 7
Security 7
Special directions 8
Structure 7
Target group 7
Tools 7
M
Main cable
Assembling the main cables 30
Dismantling the main cables 28
Main switch
Assembling the main switch 33
Dismantling the main switch 32
Motor and blow pipe
Assembling motor and blow pipe 25
Dismantling motor and blow pipe 23
S
Service data 12, 14
Service tools 11
Starter
Dismantling the starter 21
Symbols
Symbols in the Workshop Manual 9
Symbols on the saw 9
T
Technical Data 10
Threads 33
Repairing damaged threads 33
Throttle lockout, throttle and spring
Cleaning and inspection 17, 18, 21, 24, 28, 30,
31, 32
Dismantling the throttle lockout, throttle trigger
and spring 21, 28, 31, 32, 33
Troubleshooting
Troubleshooting methods 36

English – 5
Index

6 – English
Introduction and safety regulations
2 Introduction and safety regulations
Table of contents
2.1 General...........................................................................................................................................................................7
2.2 Safety..............................................................................................................................................................................7
2.3 Target group.................................................................................................................................................................7
2.4 Modications...............................................................................................................................................................7
2.5 Tools ................................................................................................................................................................................7
2.6 Structure........................................................................................................................................................................7
2.7 Numbering ...................................................................................................................................................................7
2.8 General instructions..................................................................................................................................................8
2.9 Special instructions ...................................................................................................................................................8
2.10 Symbols on the machine......................................................................................................................................9
2.11 Symbols in the Workshop Manual .....................................................................................................................9

English – 7
2 Introduction and safety regulations
Introduction and safety regulations
2.1 General
This Workshop Manual provides a comprehensive
description of how to trouble shoot, repair and test
the machine. A description of dierent safety steps
that must be taken during repair work is also given.
2.2 Safety
Note! The section dealing with safety must be
read and understood by all those carrying out
repair work or service on the machine.
Warning symbols can be found in this Workshop
Manual and on the machine. See ”Symbols on the
machine”and ”Symbols in the Workshop Manual”.
A new warning symbol decal must be applied as
soon as possible if a warning symbol on the ma-
chine has been damaged or is missing so that the
greatest level of safety can be maintained when
using the machine.
2.3 Target group
This Workshop Manual is written for personnel with
general knowledge about the repair and service of
Husqvarna machines.
The Workshop Manual must be read and under-
stood by personnel who will carry out repair work
and service on the machine. The Manual is also
suitable for use when training new employees.
2.4 Changes
Any modications to the machine will be gradually
introduced into ongoing production. As these modi-
cations aect service and/or spare parts, specic
service information will be sent out on each occa-
sion. This means that in time this Workshop Manu-
al will become out of date. In order to prevent this,
the Manual should be read together with all service
information concerning the machine in question.
2.5 Tools
Special tools are required for some stages. All
service tools are listed in the Workshop Manual.
Usage is made evident in each section.
Always use original Husqvarna:
• Spare parts
• Service tools
• Accessories
2.6 Structure
This Workshop Manual can be used in two dierent
ways:
• For the repair of a particular system on the ma-
chine.
• Dismantling and assembly of the entire machine .
Repair of a particular system
When a particular system on the machine is to be
repaired, proceed as follows:
1. Look up the page for the system in question.
2. Carry out the following steps:
• Dismantling
• Cleaning and inspection
• Assembling
Dismantling and assembly of the entire machine
When taking apart the whole machine and assem-
bling it again, proceed as follows:
1. Open the chapter "Basic dismantle" and carry
out Dismantling in the order set out in the sec-
tions.
2. Open the chapter "Repair instructions " and
carry out Dismantling in the order set out in the
sections.
3. Carry out Cleaning and inspection in the order
set out in the sections.
4. Carry out Diagnostic troubleshooting if a fault
in the electrical system is suspected.
5. Order or collect all requisite spare parts from the
stores.
6. Carry out Assembly in the order set out in the
sections.
2.7 Numbering
Position references to components in the gures
are designated A, B, etc.
The gures are numbered 1, 2 etc.
The position references and gure numbers restart
in each new section.

8 – English
2.8 General instructions
The workshop where the machine is to be repaired
must be equipped with safety equipment in accor-
dance with local regulations.
No one may repair the machine without having
read and understood the contents of this Workshop
Manual.
This Workshop Manual contains the following
warning boxes in relevant places.
2.9 Special instructions
Remove the battery from the machine before dis-
mantling and troubleshooting.
The battery must not be connected while the ma-
chine is dismantled.
Never unscrew the battery. Replace a damaged
battery.
Use only brush, rag and compressed air when
cleaning the machine.
When using compressed air, do not direct the air
jet toward your body. Air can penetrate into the
blood circulation, which means mortal danger.
Use ear protection during testing.
2.10 Limitations
This workshop manual is intended for repair work
on the 436LiB/536LiB/536LiBX leaf blower.
WARNING!
The warning box warns of the risk
of personal injury if the instruc-
tions are not followed.
NOTE!
This box warns of material damage if
the instructions are not followed.
Introduction and safety regulations

English – 9
Introduction and safety regulations
2.10 Symbols on the machine
The machine keypad has the following symbols.
2.11 Symbols in the Workshop Manual
This symbol warns of personal injury
when the instructions are not followed.
Activating/Deactivating
Throttle adjuster
Boost
Warning indicator/Fault indi-
cator

10 – English
Technical Data
3 Technical data
436LiB
536LiB
536LiBX
Airow at
Turbo-boost
cubic meters/hour
700
800
850
Airow at
normal operation
cubic meters/hour
660
700
730
Weight without battery
Ibs/kg
5.1/2.4
5.1/2.4
6.7/2.8 (inc. cable)
Weight with battery (4.2 Ah)
Ibs/kg
7.6/3.7
7.6/3.7
-
436LiB
536LiB
536LiBX

English – 11
Service tools
4 Service tools
Pos Description Used with Order No.
1Diagnostic Tool Kit Diagnosis and troubleshooting 583 89 71-01
2 Adapter Cable for Battery Products Supplement/upgrade for Engine
Diagnostic Tool - AutoTune™
(576 69 23-01)
581 19 23-01
Common Service Tool
The Common Service Tool (CST) is a service tool for Husqvarna products comprising
Diagnostic Tool Kit (583 89 71-01) and software for the installation of a PC (can be down-
loaded from the support site).
If you have the previous "Engine Diagnostic Tool - AutoTune™" (576 69 23-01), it can be
supplemented with the "Adapter Cable for Battery Products" (581 19 23-01) to upgrade to
the Diagnostic Tool Kit.
CST transmits various data from the product and battery to the computer, such as product
ID. There is also a troubleshooting guide in the form of a diagnostic tool and a list of saved
error codes.
The software in battery powered products can also be updated with CST.
CST
INSTRUCTION

12 – English
Service data
436LiB: S/N XXXXXXXXX-, 536LiB: S/N YYYYYYYYY-, 536LiBX: S/N ZZZZZZZZ-
Service data
Key
The numbers by bolted components represent the tightening torque in Nm.
Lubricate with water resistant grease.
(x3) 2,8 Nm
(x2) 1 Nm
4 mm
(x3) 1,9 Nm 4 mm
(x3) 1,6 Nm 4 mm
(x2) 1 Nm
(x3) 1.6 Nm 4 mm
(x3) 2.8 Nm 4 mm
(x3) 1.9 Nm 4 mm

English – 13
Service data
Service data
436LiB: S/N XXXXXXXXX-, 536LiB: S/N YYYYYYYYY-, 536LiBX: S/N ZZZZZZZZ-
(x2) 0,7 Nm
(x13) 1,9 Nm 4 mm
(x12) 1,9 Nm 4 mm
536
(x12) 1.9 Nm 4 mm
(x2) 0.7 Nm
536
(x13) 1.9 Nm 4 mm

14 – English
Service data
436LiB: S/N XXXXXXXXX-, 536LiB: S/N YYYYYYYYY-, 536LiBX: S/N ZZZZZZZZ-
Service data
(x9) 1,9 Nm 4 mm
1,9 Nm 4 mm
(x3) 0,7 Nm 4 mm
(x3) 1,9 Nm 4 mm
4 mm
4 mm
4 mm
4 mm 1.9 Nm
(x9) 1.9 Nm
(x3) 0.7 Nm
(x3) 1.9 Nm

English – 15
Service data
Service data
436LiB: S/N XXXXXXXXX-, 536LiB: S/N YYYYYYYYY-, 536LiBX: S/N ZZZZZZZZ-
10
11

16 – English
6 Basic dismantle/assembly
Basic dismantle/assembly
Table of contents
6.1 Battery............................................................................................................................................................................17
6.2 Nozzle..........................................................................................................................................................................17
6.3 Chassis.........................................................................................................................................................................17

English – 17
WARNING!
The battery must always be removed
for service/repair work and may only
be replaced once the machine has
been completely assembled again!
Basic dismantle/assembly
6 Basic dismantle/assembly
The steps described below are the basic steps that must be carried out before any other service or repair
work or nal assembly is possible.
Fig 1
Fig 4
Fig 2
Fig 3
6.1 Battery
Press in the catches and remove the battery.
See gure 1.
Replace the battery once assembly has been
completed.
6.3 Chassis (436LiB, 536LiB)
Loosen the screws (x12) and lift o the left chassis
half, front (A) and rear (B) ventilation covers.
See gure 3
Cleaning and inspection
Carefully clean and inspect the chassis halves
(including hand grip), ventilation covers and the
eyelet. Parts must be replaced if cracked or show-
ing signs of other defects. Always use original
spare parts.
See gure 4
Assemble in the reverse order.
Tightening torque 1.9±0.1 Nm.
NOTE!
It should be easy to put together the chassis
halves. Make sure cables and such are
positioned correctly if this is dicult.
6.2 Nozzle
Turn the nozzle to loosen it from the blow pipe.
See gure 2
Cleaning and inspection
Clean and check the nozzle thoroughly. It must
always be replaced with a new one if cracked or
showing signs of other defects. Always use original
spare parts.
Assemble in the reverse order.
NOTE!
Note how wires, components, etc., are
positioned before dismantling. Make sure
to position them correctly to avoid pinching
when the machine is reassembled.
2
1
1
A
B
536
436 536

18 – English
6 Basic dismantle/assembly
Basic dismantle/assembly
6.3 Chassis (536LiBX)
Loosen the screws (x9) and lift o the left chassis
half (A) and ventilation cover (B).
See gure 3b.
Loosen the service cable fastened to the left chas-
sis half. Use tweezers or a small pair of pliers, see
gure 3c.
Cleaning and inspection
Carefully clean and inspect the chassis halves
(including hand grip), ventilation covers and the
eyelet. Parts must be replaced if cracked or show-
ing signs of other defects. Always use original
spare parts.
See gure 4b.
Assemble in the reverse order.
Tightening torque 1.9±0.1 Nm.
NOTE!
It should be easy to put together the chassis
halves. Make sure cables and such are
positioned correctly if this is dicult.
A
B
Fig. 4b
Fig 3b
Fig 3c

English – 19
Basic dismantle/assembly

20 – English
7 Repair instructions
Table of contents
7.1 General repair instructions .....................................................................................................................................21
7.2 Dismantling the throttle.......................................................................................................................................21
7.3 Assembling the throttle........................................................................................................................................21
7.4 Dismantling the ESD cable ..................................................................................................................................22
7.5 Assembling the ESD cable ...................................................................................................................................22
7.6 Dismantling motor and blow pipe....................................................................................................................23
7.7 Assembling motor and blow pipe.....................................................................................................................25
7.8 Dismantling the main cable ................................................................................................................................28
7.9 Assembling the main cable .................................................................................................................................30
7.10 Dismantling the control unit ..............................................................................................................................31
7.11 Assembling the control unit ...............................................................................................................................31
7.12 Dismantling the main switch .............................................................................................................................32
7.13 Assembling the main switch ..............................................................................................................................33
7.14 Repairing damaged threads................................................................................................................................33
Repair instructions