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