
Contents
1 Introduction................................................. 2
2 Guide to Using this Manual.........................3
3 Main Parts...................................................3
4 Safety Symbols on the Products.................4
5 General Power Tool Safety Warnings and
Instructions..................................................6
6 IMPORTANT SAFETY INSTRUCTIONS..10
7 Battery Safety........................................... 20
8 Maintenance, Repair and Storage............ 21
9 Before Starting Work.................................22
10 Charging the Battery................................. 22
11 LED Diagnostics and Acoustic Signals..... 24
12 STIHL AR Backpack Battery.....................25
13 Assembling the Trimmer / Brushcutter......26
14 Adjusting the Trimmer / Brushcutter......... 30
15 Inserting and Removing the Battery..........31
16 Switching the Trimmer / Brushcutter On and
Off............................................................. 32
17 Checking the Power Tool..........................33
18 During Operation.......................................33
19 After Finishing Work..................................35
20 Transporting the Trimmer / Brushcutter and
Battery.......................................................35
21 Storing the Trimmer / Brushcutter and Bat‐
tery............................................................ 36
22 Cleaning....................................................37
23 Inspection and Maintenance..................... 37
24 Troubleshooting Guide..............................39
25 Specifications............................................41
26 Approved Deflector, Cutting Attachment,
Handle and Harness Combinations.......... 42
27 Replacement Parts and Equipment.......... 45
28 Disposal.................................................... 45
29 Limited Warranty.......................................46
30 Trademarks...............................................46
31 Addresses................................................. 46
1 Introduction
Thank you for your purchase. The information
contained in this manual will help you receive
maximum performance and satisfaction from
your trimmer and, if followed, reduce the risk of
injury from its use.
The terminology utilized in this manual when
referring to the power tool reflects the type of cut‐
ting attachments that may be mounted on it. The
term "trimmer" is used to designate an FS / FSA
unit that is equipped with a nylon line head or a
head with flexible plastic blades (i.e., the PolyCut
head). The term "brushcutter" designates a unit
equipped with a rigid metal blade. Many STIHL
FS / FSA models, including this power tool, may
be used as either a trimmer or a brushcutter.
Therefore, the power tool is referred in this man‐
ual as a "trimmer / brushcutter."
SAVE THIS MANUAL!
Because a trimmer / brushcutter is
a high-speed cutting tool, special
safety precautions must be
observed to reduce the risk of per‐
sonal injury.
Read this instruction manual thor‐
oughly before use and periodically
thereafter. Follow all safety pre‐
cautions. Careless or improper
use can cause serious or fatal
injury.
Do not lend or rent the power tool without this
instruction manual. Allow only persons who fully
understand the information in this manual to
operate the trimmer / brushcutter.
For further information, or if you do not under‐
stand any of the instructions in this manual,
please go to www.stihlusa.com or contact your
authorized STIHL servicing dealer.
WARNING
■ As more fully explained later in this manual, to
reduce the risk of personal injury, make sure
your unit is equipped with the proper handle,
harness and deflector for the type of cutting
attachment you are using. Use only cutting
attachments that are specifically authorized by
STIHL for use with this power tool. Always
wear proper protective apparel and eye pro‐
tection. Bystanders, especially children, and
animals should not be allowed in the work
area where the trimmer is in use.
WARNING
■ Use of this machine may be hazardous. If the
rotating line or blade comes in contact with
your body, it will cut you. When it comes in
contact with solid foreign objects such as
rocks, glass or bits of metal, it may fling them
directly or by ricochet in the direction of
bystanders or the operator. Striking such
objects could damage the cutting attachment
and may cause blades to crack, chip or break.
Thrown objects, including broken heads or
blades, may result in serious or fatal injury to
the operator or bystanders. Follow the safety
precautions in this manual to reduce the risk of
personal injury.
English
2 0458-040-8601-A
© ANDREAS STIHL AG & Co. KG 2023
0458-040-8601-A. VA1.J23.
Printed on chlorine-free paper
Paper is recyclable.
Original Instruction Manual
0000010715_002_GB