1FS 120, FS 200, FS 250
English
BA_SE_049_010_01_11.fmPrinted on chlorine-free paper.
Printing inks contain vegetable oils; paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2006 
0458 250 8221 B. M0,2. B6. PM. Printed in USA 
STIHl
Contents
Guide to Using this Manual  .............. 2
Safety Precautions and 
Working Techniques  ......................... 3
Approved Combinations of 
Cutting Tool, Deflector, 
Handle and Harness ....................... 18
Approved Power 
Tool Attachments ............................ 20
Mounting the Bike Handle  .............. 20
Mounting the Loop Handle  ............. 22
Adjusting the Throttle Cable  ........... 23
Fitting the Carrying Eye .................. 24
Mounting the Deflector  ................... 24
Mounting the Cutting Tools ............. 25
Fuel ................................................ 29
Fueling ............................................ 30
Fitting the Harness  ......................... 31
Balancing the Brushcutter  .............. 32
Starting / Stopping the Engine  ........  33
Operating Instructions  .................... 36
Cleaning the Air Filter ..................... 36
Motor Management  ........................ 37
Adjusting the Carburetor  ................ 37
Checking the Spark Plug  ................ 39
Engine Running Behavior ............... 40
Lubricating the Gearbox  ................. 40
Replacing Starter Rope 
and Rewind Spring  ......................... 41
Storing the Machine ........................ 43
Sharpening 
Metal Cutting Tools ......................... 43
Maintenance Chart  ......................... 46
Parts and Controls .......................... 48
Specifications ................................. 51
Special Accessories  ....................... 52
Maintenance and Repairs ............... 53
STIHL Limited Emission 
Control Warranty Statement  ...........  54
Allow only persons who understand this 
manual to operate your brushcutter. 
To receive maximum performance and 
satisfaction from your STIHL brush-
cutter, it is important that you read and 
understand the maintenance and safety 
precautions, starting on page 3, before 
using your brushcutter. 
Contact your STIHL dealer or the STIHL 
distributor for your area if you do not 
understand any of the instructions in this 
manual.
!Warning!
Because a brushcutter is a high-speed 
cutting tool some special safety pre-
cautions must be observed to reduce
the risk of personal injury. 
Careless or improper use may cause 
serious or even fatal injury. Make sure 
your unit is equipped with the proper 
deflector, handle and harness for the 
type of cutting attachment being used. 
Always wear proper eye protection.
STIHL's philosophy is to continually 
improve all of its products. As a result, 
engineering changes and improve-
ments are made from time to time. If  the 
operating characteristics or the appear-
ance of your brushcutter differs from 
those described in this manual, please 
contact your STIHL dealer for informa-
tion and assistance.