Specifications - Stihl BG 55 Instruction Manual

Specifications

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
A = 300 hours
B = 125 hours
C = 50 hours
CARB
The Emission Compliance Period used
on the CARB-Air Index Label indicates
the terms:
Extended = 300 hours
Intermediate = 125 hours
Moderate = 50 hours
Engine
Single cylinder two-stroke engine
BG 55, BG 65, BG 85, SH 55, SH 85
Displacement: 1.66 cu. in
(27.2 cc)
Bore: 1.34 in (34 mm)
Stroke: 1.18 in (30 mm)
Engine power to
ISO 7293:
BG 55: 0.9 bhp (0.7 kW)
BG 65: 0.9 bhp (0.7 kW)
BG 85: 1.1 bhp (0.8 kW)
SH 55: 0.9 bhp (0.7 kW)
SH 85: 1.1 bhp (0.8 kW)
Idle speed: 2,800 rpm
Ignition System
Electronic magneto ignition
Spark plug (resistor NGK BPMR 7 A,
type): Bosch WSR 6 F
Electrode gap: 0.02 in (0.5 mm)
Fuel System
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity: 13.5 fl.oz (0.4 l)
Maximum air flow rate
Vacuum
Blower mode mode
353 cf/min
BG 55: 430 cf/min
3
(730 m /h) (600 m
BG 65: 430 cf/min 353 cf/min
3
(730 m /h) (600 m
BG 85: 459 cf/min 368 cf/min
3
(780 m /h) (625 m
SH 55: 430 cf/min 353 cf/min
3
(730 m /h) (600 m
SH 85: 459 cf/min 368 cf/min
3
(780 m /h) (625 m
Air velocity with nozzle
BG 55: 140 mph
(63 m/s)
BG 65: 174 mph
(78 m/s)
BG 85: 183 mph
(82 m/s)
SH 55: 140 mph
(63 m/s)
SH 85: 183 mph
(82 m/s)
English
3
/h)
3
/h)
3
/h)
3
/h)
3
/h)
27