Specifications - Stihl FS 91 Instruction Manual

29 Specifications

7
8
1 Drive tube
2 Mowing head
3 Deflector for mowing heads only
4 Line limiting blade
5 Deflector for all mowing attachments
6 Skirt for mowing heads
7 Metal mowing attachment
8 Circular saw blade
9 Limit stop for circular saw blades only
29 Specifications
29.1 Engine
Single cylinder four-stroke engine with mixture
lubrication
Displacement:
Bore:
Stroke:
Engine power to ISO 8893: 0.95 kW (1.3 bhp) at
Idle speed:
Cut-off speed (rated):
Max. output shaft speed
(cutting attachment):
Valve clearance
Inlet valve:
Exhaust valve:
29.2 Ignition System
Electronic magneto ignition
0458-426-0121-B
1
3
4
2
1
5
6
4
2
1
5
1
9
28.4 cc
38 mm
25 mm
7,000 rpm
2,800 rpm
9,500 rpm
7,150 rpm
0.10 mm
0.10 mm
Spark plug (resistor type): Bosch USR 7 AC
Electrode gap:
29.3 Fuel System
All position diaphragm carburetor with integral
fuel pump
Fuel tank capacity:
29.4 Weight
Dry, without cutting attachment and deflector
FS 91:
FS 91 R:
29.5 Overall length
without cutting attachment 1800 mm
29.6 Features
R Loop handle
29.7 Noise and Vibration Data
29.7.1 Cutting Attachment
For details on compliance with Vibration Direc‐
tive 2002/44/EC visit www.stihl.com/vib.
Sound pressure level L
with mowing head
FS 91 with bike handle:
FS 91 R:
with metal mowing attachment
FS 91 with bike handle:
FS 91 R with barrier bar:
Sound power level L
w
with mowing head
FS 91 with bike handle:
FS 91 R:
with metal mowing attachment
FS 91 with bike handle:
FS 91 R with barrier bar:
Vibration level a to ISO 22867
hv,eq
with mowing head
FS 91 with bike han‐
dle:
FS 91 R:
with metal mowing
attachment
FS 91 with bike han‐
dle:
FS 91 R with barrier
bar:
English
0.5 mm
710 cc (0.71 l)
5.8 kg
5.5 kg
to ISO 22868
p
95 dB(A)
95 dB(A)
93 dB(A)
93 dB(A)
to ISO 22868
106 dB(A)
106 dB(A)
105 dB(A)
105 dB(A)
Handle, left Handle,
right
2
3.4 m/s 3.0 m/s
2
5.3 m/s 5.3 m/s
Handle, left Handle,
right
2
3.2 m/s 2.5 m/s
2
3.8 m/s 4.3 m/s
2
2
2
2
37