9FS 90, FS 90 R
English / USA
.
Arrows on the deflector (A) and limit stop 
(B) (as seen from the underside) show 
the correct direction of rotation of the 
cutting attachment. When viewed from 
above, however, the cutting attachment 
rotates  counterclockwise.
Adjust carrying harness and hand grip to 
suit your size before starting work. The 
machine should be properly balanced as 
specified in your instruction manual for 
proper control and less fatigue in 
operation. To be better prepared in case 
of an emergency, practice releasing the 
unit from the harness as quickly as 
possible. 
Starting
Start the engine at least 10 feet 
(3 meters) from the fueling spot, 
outdoors only.
For specific starting instructions, see the 
appropriate section of your manual. 
Place the power tool on firm ground or 
other solid surface in an open area. 
Maintain good balance and secure 
footing.
!Warning!
To reduce the risk of injury from blade or 
line contact, be absolutely sure that the 
cutting attachment is clear of you and all 
other obstructions and objects, including 
the ground, because when the engine 
starts at starting-throttle, engine speed 
will be fast enough for the clutch to 
engage and move the cutting 
attachment.
Once the engine has started, 
immediately blip the throttle trigger, 
which should release the starting throttle 
and allow the engine to slow down to 
idle.
With the engine running only at idle, 
attach the power tool to the spring hook 
of your harness (see appropriate 
chapter of this manual).
!Warning!
Your power tool is a one-person 
machine. Do not allow other persons in 
the general work area, even when 
starting.
!Warning!
To reduce the risk of injury from loss of 
control, do not attempt to “drop start” 
your power tool. 
!Warning!
When you pull the starter grip, do not 
wrap the starter rope around your hand. 
Do not let the grip snap back, but guide 
the starter rope to rewind it properly. 
Failure to follow this procedure may 
result in injury to your hand or fingers 
and may damage the starter 
mechanism.
Important Adjustments
!Warning!
To reduce the risk of personal injury from 
loss of control or contact with the 
running cutting attachment, do not use 
your unit with incorrect idle adjustment. 
At correct idle speed, the cutting 
attachment should not move. For 
directions on how to adjust idle speed, 
see the appropriate section of your 
instruction manual. 
If you cannot set the correct idle speed, 
have your STIHL dealer check your 
power tool and make proper 
adjustments and repairs.
A
000BA006 KN
B
000BA007 KN