Instruction Manual

SR 430, SR 450
English
43
EPA / CEPA
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
CARB
The Emission Compliance Period used
on the CARB-Air Index Label indicates
the terms:
Engine
STIHL single cylinder two-stroke engine
Ignition System
Electronic magneto ignition
Fuel System
All position diaphragm carburetor with
integral fuel pump
Blowing Performance
Spraying Attachment
Weight
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Extended = 300 hours
Intermediate = 125 hours
Moderate = 50 hours
Displacement: 3.86 cu.in
(63.3 cc)
Bore: 1.89 in (48 mm)
Stroke: 1.38 in (35 mm)
Engine power to
ISO 7293: 2.9 kW (3.9 bhp)
Idle speed: 3,000 rpm
Spark plug (resistor
type):
NGK BPMR 7 A,
Bosch WSR 6 F
Electrode gap: 0.02 in (0.5 mm)
Fuel tank capacity: 57.5 fl oz (1.7 l)
Air velocity: 201 mph
(90 m/s)
Max. air flow rate
without blower tube
765 cf/min
(1300 m
3
/h)
Air flow rate with
nozzle:
542 cf/min
(920 m
3
/h)
Container capacity: 473.4 fl oz (14 l)
Quantity left in
container: 1.7 fl oz (50 ml)
Mesh size of filler
strainer: 0.04 in (1 mm)
Spraying distance,
horizontal: 47.6 ft (14.5 m)
Discharge rate (hori-
zontal, without
pressure pump, with
standard metering
knob):
3.7 –
110.9 fl.oz/min
(0.11 – 3.28 l/min)
Discharge rate (hori-
zontal, without
pressure pump, with
standard metering
knob):
37.9 –
130.5 fl.oz/min
(1.12 – 3.86 l/min)
Dry:
SR 430: 26.90 lbs (12.2 kg)
SR 430 with pres-
sure pump: 27.30 lbs (12.4 kg)
SR 450: 28.20 lbs (12.8 kg)
Max. weight capacity of container:
SR 450: 30.86 lbs (14 kg)
Max. operating weight (fueled and
filled)
SR 430: 60.60 lbs (27.5kg)
SR 430 with pres-
sure pump: 61.10 lbs (27.7 kg)
SR 450: 61.90 lbs (28.1 kg)