Stihl FS 90 - Page 2

1FS 90, FS 90 R
English / USA
BA_SE_181_004_01_06.fmPrinted on chlorine-free paper.
Printing inks contain vegetable oils; paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2007 0458 260 8621 B. M12. J7. CP. 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 ....................... 20
Approved Power
Tool Attachments ............................ 22
Mounting the Bike Handle .............. 22
Mounting the Loop Handle ............. 24
Adjusting the Throttle Cable ........... 26
Fitting the Carrying Eye .................. 26
Mounting the Deflector ................... 27
Mounting the Cutting Tools ............. 28
4-MIX Engine .................................. 32
Fuel ................................................ 32
Fueling ............................................ 33
Fitting the Harness ......................... 34
Balancing the Brushcutter .............. 35
Starting / Stopping
the Engine ...................................... 36
Cleaning the Air Filter ..................... 39
Motor Management ........................ 39
Adjusting the Carburetor ................ 40
Spark Arresting
Screen in Muffler ............................ 41
Checking the Spark Plug ................ 42
Lubricating the Gearbox ................. 43
Replacing Starter Rope
and Rewind Spring ......................... 43
Storing the Machine ....................... 46
Sharpening
Metal Cutting Tools ......................... 47
Inspections and Maintenance
by Dealer ........................................ 47
Maintenance Chart ......................... 48
Parts and Controls ......................... 50
Specifications ................................. 53
Special Accessories ....................... 53
Maintenance and Repairs .............. 54
STIHL Incorporated
Federal Emission Control
Warranty Statement ........................ 55
STIHL Incorporated California
Exhaust and Evaporative Emissions
Control Warranty Statement ........... 57
Trademarks .................................... 59
Allow only persons who understand this
manual to operate your trimmer/
brushcutter.
To receive maximum performance and
satisfaction from your STIHL trimmer/
brushcutter, it is important that you read
and understand the maintenance and
safety precautions, starting on page 3,
before using your trimmer/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 trimmer/brushcutter is a high-
speed cutting tool some special safety
precautions 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 trimmer/brushcutter differs
from those described in this manual,
please contact your STIHL dealer for
information and assistance.