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Stihl Fs 80 R Owners Manual

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Page 21

20 English / USAFS 80, FS 80 R, FS 85, FS 85 R
Cutting tools
  1STIHL Supercut 20-2 
  2 STIHL Autocut 25-2 
   3 STIHL Autocut C 25-2 
   4 STIHL Trimcut 30-2
   5 STIHL Polycut 20-3 
  6 STIHL FixCut 25-2
   7 Grass cutting blade 230-4
   8 Grass cutting blade 230-8
   9 Brush knife 250-3
10 Scratcher tooth circular 
saw blade 200 
11 Chisel tooth circular 
saw blade 200 
Grass cutting blades, brush knifes and 
circular saw blades made of any other 
non-metal material are not permitted.
Deflectors,...

Page 22

21
FS 80, FS 80 R, FS 85, FS 85 R English / USA
Cutting tool Deflector, Limit Stop Handle Harness/Strap
681FK003
681FK006
681FK011
5 3 1681FK037 KN
4
681FK005
2
681FK111 KN6
12681FK023
681BA002 KN13
14
17002BA002 K
002BA003 K1819
002BA125 KN21
002BA001 K
20
002BA005 K22
681FK014
7
8
9
681FK02115
002BA003 K1819
002BA001 K
20002BA126 KN002BA127 KN002BA005 K2223 23
681FK018
681FK016
11
10681FK024
16
002BA001 K
20
002BA026 KN002BA006 K2424 

Page 23

22 English / USAFS 80, FS 80 R, FS 85, FS 85 R
Power tool attachments are not 
approved for the STIHL FS 80.
The following STIHL attachments may 
be mounted to the basic power tool: 
1)  Barrier bar  must be fitted on the 
loop handle 
2)  Not approved for use with bike- handled units
3)It is not necessary to use a shoulder 
strap :
Mount the bike handle  (1) on the 
drive tube  (2) about 16” (40 cm)  (A) 
forward of the engine. 
: Place the clamp  (3) and the handle 
support  (4) on the drive tube.
:...

Page 24

23
FS 80, FS 80 R, FS 85, FS 85 R English / USA
: Place the clamp  (5) on the handle 
support.
: Insert screws  (6) in the holes and 
clamp  (3) and tighten them 
moderately.
: Line up the bike handle.
: Tighten down the screws firmly.
Fitting the control handle
:Release the screw  (7). The nut  (8) 
remains  in the control handle  (9).
: Push the control handle onto the 
bike handle  (1)  – the throttle trigger 
(10 ) must point towards the 
gearhead.
: Line up the holes  (11).
: Fit screw in control...

Page 25

24 English / USAFS 80, FS 80 R, FS 85, FS 85 R
A properly adjusted throttle cable is 
the precondition for correct 
operation in the full throttle, starting 
throttle and idle positions.
Adjust the throttle cable only after 
the unit is fully assembled – the 
control handle must be in the normal 
operating position.
: Use a suitable tool to push the slide 
to the bottom of the slot (see 
illustration). :
Press down the trigger interlock ( 1) 
and squeeze the throttle trigger ( 2)  
(full throttle) –...

Page 26

25
FS 80, FS 80 R, FS 85, FS 85 R English / USA
: Place the clamp  (3) in the loop 
handle  (4) and position them both 
against the drive tube  (5).
: Fit the clamp  (6) and place the 
barrier bar  (2) in position.
Note correct position.
: Line up the holes.
: Insert screws  (7) in holes and screw 
them into the barrier bar as far as 
stop.
: Go to “Securing the loop handle”.
Loop handle without barrier bar
:Place the clamp  (3) in the loop 
handle  (4) and position them both 
against the drive tube...

Page 27

26 English / USAFS 80, FS 80 R, FS 85, FS 85 R
:
For position of carrying eye
1) see 
Parts and Controls
: Place the clamp  (1) with the 
tapped hole on the left-hand side  
of the drive tube.
: Squeeze the two ends of the clamp 
together and hold in that position.
: Insert M 6 x 14 screw  (2).
: Line up the carrying eye.
: Tighten down the screw firmly.
1) Included as standard or available as  special accessoryMounting the deflector
1 = Deflector approved  for all cutting 
tools
2 = Deflector approved...

Page 28

27
FS 80, FS 80 R, FS 85, FS 85 R English / USA
Mounting the stop
:
Always fit stop  (6) when you use a 
circular saw blade.
: Place the stop on the gearhead 
flange.
: Fit the three M 5 x 18 screws  (7) and 
tighten down securely.
Preparations
: Lay your brushcutter on its back 
with the gearhead facing upward.
Mounting Hardware 
for Cutting Tools
The mounting hardware supplied 
depends on the cutting tool that comes 
as original equipment with the new 
brushcutter.
Mounting hardware is not packed...

Page 29

28 English / USAFS 80, FS 80 R, FS 85, FS 85 R
Mounting hardware is packed with 
the machine
Mowing heads and metal cutting 
tools may be mounted.
Mounting hardware is loose
: Pull the hose ( 1) (protector for 
shipping) off the shaft ( 2).
The nut ( 3), rider plate ( 4) and thrust 
washer ( 5) are in the parts kit 
supplied with the machine.
: Go to Mounting the Mowing Head 
or Mounting Metal Cutting Tools.
Mounting hardware is secured to  
gearhead
: Go to Removing Mounting 
Hardware
Removing Mounting...

Page 30

29
FS 80, FS 80 R, FS 85, FS 85 R English / USA
Mounting the Mowing Head
Keep instruction sheet for mowing head 
in a safe place.
:
Screw the
STIHL SuperCut 20-2, 
STIHL AutoCut 25-2, 
STIHL AutoCut C 25-2,
STIHL TrimCut 30-2, 
STIHL PolyCut 20-3
counterclockwise onto the shaft ( 1) 
as far as stop.
: Block the output shaft.
: Tighten down the mowing head.
Remove the tool used to block the 
shaft. STIHL FixCut 25-2
:
Place the mowing head on the 
thrust plate ( 2).
Collar ( arrows ) must locate in the...
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