40
English / USA
FS 500, FS 550
Engine
EPA:
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category A = 300 hours, B = 125 hours,
C = 50 hours
STIHL single cylinder two-stroke engine
Displacement
FS 500: 3.15 cu.in
(51.7 cm
3
)
FS 550: 3.45 cu.in
(56.5 cm
3
)
Bore
FS 500: 1.73 in (44 mm)
FS 550: 1.81 in (46 mm)
Stroke
FS 500: 1.34 in (34 mm)
FS 550: 1.34 in (34 mm)
Engine power to ISO 8893
FS 500: 3.2 HP (2.4 kW)
FS 550: 3.7 HP (2.8 kW)
Max. engine speed
12,500 rpm
Idle speed
2,500 rpm
Max. output shaft speed (cutting tool)
9,400 rpm
Ignition System
with electronic speed governor
Type
electronic (breakerless) magneto
ignition
Spark plug (resistor type)
Bosch WSR 6 F, NGK BPMR 7 A
Electrode gap
0.02 in (0.5 mm)
Spark plug thread
M 14x1.25; 0.37 in (9.5 mm) long
Rewind Starter
Starter rope
0.14 in (3.5 mm) dia. x 37.8 in (960 mm)
Part No.
1113 195 8200
Carburetor
All position diaphragm carburetor with
integral fuel pump
Air filter
Fabric, felt
Fuel tank capacity
1.6 US pt (0.755 l)
Fuel mix
See chapter "Fuel"
Weight
dry, without cutting tool and deflector
FS 500, 550: 21.6 lbs (9.8 kg)
FS 550 L: 22 lbs (10.0 kg)
Contact your STIHL dealer for
information regarding special
accessories that may be available for
your product.
Specifications Special Accessories
