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Specifications
Engine
STIHL single cylinder two-stroke engine
Displacement:
Bore:
Stroke:
Engine power:
For US only:
Bystander noise per ANSI
B 175.2 -1990
Ignition System
Type:
Spark plug (suppressed): NGK BPMR 7 A or
Spark plug thread:
Fuel System
Carburetor:
Air filter:
Fuel tank capacity:
Fuel mixture:
SR 320
SR 400
44.9 cm³
56.5 cm³
(2.74 cu.in)
(3.45 cu.in)
41 mm (1.61 in) 46 mm (1.81 in)
34 mm (1.34 in) 34 mm (1.34 in)
2,0 kW
2,5 kW
320 L
70 dB (A)
Electronic magneto ignition
(breakerless)
Bosch WSR 6 F
Heat range 200
Electrode gap 0.5 mm (0.02 in)
M 14x1.25;
9.5 mm (0.37 in) long
All position diaphragm carbu-
retor with integral fuel pump
Foam filter
1.5 I (3.2 US pt)
see chapter "Fuel"
Spraying and Spreading Attachment
Model
Airflow
Air
rate/hour
velocity
3
SR 320
655 m
/h
92 m/s
(385 cfm)
(302 ft/s)
3
SR 400
715 m
101 m/s
(420 cfm)
(330 ft/s)
Container capacity:
13 L (3.5 US gal)
Size of filler
strainer mesh (SR):
1 mm (3/64")
Rate of liquid
discharge (SR)
without screen:
0.13 - 2.78 L/min (0.27 - 5.8 pt/min)
with screen:
0.14 - 3.03 L/min (0.29 - 6.4 pt/min)
(infinitely variable)
Quantity remaining
in container (SR):
0.1 L (3 1/2 fl. oz) (design related)
Spraying range
SR 320
Horizontal
10.0 m (33 ft)
Vertical
9.5 m (31 ft)
Dimensions
SR 320, SR 400
Height:
625 mm (24.6 in)
Width:
480 mm (18.9 in)
Depth:
280 mm (11.0 in)
Special Accessories
Pressure pump mounting kit, Mistblower conversion kit
Vacuum attachment, Spreading attachment
Back padding, Lap belt
Weights (dry)
SR 320/400:
10.9 kg (24.0 lb)
Engine
speed
6,900 rpm
7,500 rpm
SR 400
12.0 m (40 ft)
11.5 m (38 ft)
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