32
English / USA
BR 500, BR 550, BR 600
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
Ignition System
Fuel System
Rewind Starter
Starter rope:
0.14 in dia. x 37.8 in
(3,5 mm dia. x 960 mm)
STIHL 4-MIX engine
Displacement: 3.95 ci (64.8 cm
3
)
Bore: 2,55 in (50 mm)
Stroke: 1.3 in (33 mm)
Idle speed: 2 500 rpm
Specifications
Type: Electronic
magneto ignition
Spark plug
(suppressed): NGK CMR 6 H
Electrode gap: 0.028 in (0,7 mm)
Carburetor: All position
diaphragm
carburetor with
integral fuel
pump
Fuel tank capacity: 47,3 fl.oz. (1,4 l)
Fuel mix: see chapter
“Fuel”
Weight lbs. (kg)
BR 500 21.8 (9,9)
BR 550 21.4 (9,7)
BR 600 20.9 (9,5)
Air flow rate
with nozzle CFM (m
3
/h)
BR 500 477 (810)
BR 550 530 (900)
BR 600 712 (1210)
Air velocity
with nozzle MPH (m/s)
BR 500 181 (81)
BR 550 199 (89)
BR 600 201 (90)
Bystander noise per
ANSI B 175.2-2000 dB (A)
BR 500 65
BR 550 73
BR 600 75
