39FS 500, FS 550
English / USA
Definitions
1. Handlebar
For easy control of the machine with 
both hands during cutting work.
2. Throttle Trigger
Controls the speed of the engine.
3. Slide Control
For starting throttle, run and stop. 
Keeps the throttle partially open 
during starting, switches the 
engine’s ignition off to stop the 
engine.
4. Throttle Trigger Interlock 
Must be depressed before the 
throttle trigger can be activated.
5. Clamp Screws
Locks handlebar in selected 
position.
6. Hexagon Head Screw 
See item 5.
7. Carrying Strip
The device to connect the clearing 
saw to the harness.
  8. Fuel Pump
Provides additional fuel feed for a 
cold start.
  9. Choke Knob
Eases engine starting by enriching 
mixture.
10. Air Diverter for Carburetor 
Preheating
Prevents carburetor icing.
11. Carburetor Box Cover
Covers the air filter element.
12. Fuel Tank 
For fuel and oil mixture.
13. Spark Plug Boot with Cover
Connects the spark plug to the 
ignition lead.
14. Decompression Valve
To ease starting.
15. Muffler
(with spark arresting screen)
Reduces exhaust noises and 
diverts exhaust gases away from 
operator.
16. Starter Grip
The grip of the pull starter, which is 
the device to start the engine.
17. Carburetor Adjusting Screws
For tuning the carburetor.
18. Fuel Filler Cap
For closing the fuel tank.
19. Machine Support 
For resting machine on the ground.
20. Cutting Tool 
The cutting attachment for different 
purposes.
21. Deflector
The deflector is designed to reduce 
the risk of injury from foreign objects 
flung backwards toward the 
operator by the cutting tool and from 
contact with the cutting tool. A skirt 
at the bottom of the deflector must 
be adjusted as described in the 
chapter on "Cutting tools and 
Deflectors".