RedMax BHB250P Instruction manual

Workshop manual
Manual de taller
Manuel d'atelier
BHB250P
English
Español
Français
568 - 002 - 27.03.2018

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 Symbols on the product......................................... 4
2.4 Special safety instructions......................................4
3 Servicing data
3.1 Servicing data BHB250P........................................5
4 Servicing tools
4.1 Diagnostic tools .....................................................9
5 Repair instructions
5.1 To clean and examine the product parts..............10
5.2 To disassemble the nozzle...................................10
5.3 To disassemble the chassis ................................ 10
5.4 Power trigger........................................................10
5.5 ESD cables.......................................................... 11
5.6 The motor and the blow pipe................................12
5.7 Main cable............................................................14
5.8 Control unit...........................................................16
5.9 Main switch.......................................................... 17
6 Troubleshooting
6.1 Overhaul...............................................................18
6.2 To connect the common service tool................... 18
6.3 To do troubleshooting of the common service
tool............................................................................. 18
6.4 Troubleshooting of the product............................ 18
6.5 Troubleshooting of the battery and battery
charger....................................................................... 20
6.6 Troubleshooting of the battery connector.............21
7 Technical data
7.1 Technical data......................................................23
2568 - 002 - 27.03.2018

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/
Redmax.
568 - 002 - 27.03.2018 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: Apply a new warning label if a
warning symbol on the product is damaged or
missing.
2.3 Symbols on the product
Start/stop
Boost button
Cruise control button
2.4 Special safety instructions
2.4.1 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
4 - Safety 568 - 002 - 27.03.2018

3 Servicing data
3.1 Servicing data BHB250P
The numbers show the tightening torque for the
component in Nm.
(x3) 2,8 Nm
(x2) 1 Nm
4 mm
(x3) 1,9 Nm 4 mm
(x2) 1 Nm
(x3) 2.8 Nm 4 mm
(x3) 1.9 Nm 4 mm
568 - 002 - 27.03.2018 Servicing data - 5

4 mm
536
(x12) 1.9 Nm 4 mm
(x2) 0.7 Nm
(x13) 1.9 Nm 4 mm
6 - Servicing data 568 - 002 - 27.03.2018

(x3) 1,9 Nm 4 mm
4 mm
(x3) 1.9 Nm
1,9 Nm 4 mm
4 mm1.9 Nm
4 mm
(x3) 0.7 Nm
(x9) 1,9 Nm 4 mm
4 mm(x9) 1.9 Nm
568 - 002 - 27.03.2018 Servicing data - 7

8 - Servicing data 568 - 002 - 27.03.2018

4 Servicing tools
4.1 Diagnostic tools
CST
INSTRUCTION
4.1.1 Common service tool
The common service tool (CST) tool is used with a
computer (not included) for Husqvarna/Redmax
products.
The common service tool transmits data from the
product and battery to the computer, for example
product ID. There is also a diagnostic tool list and a list
of saved error codes. The common service tool is also
used to update the software in battery products.
Pos
.
Description Used with Order
No.
1 Diagnostic Tool
Kit
Diagnosis and trou-
bleshooting
583 89
71-01
2 Adapter cable
for battery
products
Supplement/upgrade
for Engine Diagnos-
tic Tool - AutoTune™
(576 69 23-01)
581 19
23-01
568 - 002 - 27.03.2018 Servicing tools - 9

5 Repair instructions
5.1 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.
5.2 To disassemble the nozzle
• Turn the nozzle to loosen it from the blow pipe.
5.3 To disassemble the chassis
• Remove the 12 screws. Lift off the left chassis half,
the front cover (A) and the rear vent cover (B).
A
B
5.4 Power trigger
5.4.1 To disassemble the power trigger
• Lift the power trigger control out of the chassis.
5.4.2 To assemble the power trigger
• Press in the pin on the main switch to make it easier
to put the power trigger control in its bracket. Make
sure the rear edge on the power trigger control
enters into the chassis.
10 - Repair instructions 568 - 002 - 27.03.2018