Page 8 Technical Information 08.2005
TI_08_2005_11_01_02.fm
2. Specifications
2.1 Engine
2.2 Fuel system
Carburetor
All-position diaphragm carburetor with limiter caps
on the high-speed adjusting screw (H) and the low-
speed adjusting screw (L) and integrated fuel pump.
Standard setting with limiter caps
Basic setting without limiter caps
Fuel tank capacity
1.4 l (1400 cm³)
2.3 Ignition system
BR 500 BR 550 BR 600
Displacement 64.8 cm
3
Cylinder bore 50 mm
Piston stroke 33 mm
Idle speed 2,500 rpm
Operating speed with nozzle 5,500 rpm 6,100 rpm 7,200 rpm
Maximum air flow 1,380 m³/h 1,490 m³/h 1,720 m³/h
Air flow with nozzle 810 m³/h 900 m³/h 1,210 m³/h
Air velocity 81m/s 89 m/s 90 m/s
Sound pressure level L
peq
according
to EN ISO 11201
1)
86 dB(A) 92 dB(A) 96 dB(A)
Sound power level L
weq
according
to ISO 3744
1)
95 dB(A) 103 dB(A) 105 dB(A)
Vibration acceleration a
eq
to ISO 8662
1)
Idle speed 1.7 m/s
2
1.5 m/s
2
1.7 m/s
2
at max. RPM 1.4 m/s
2
1.6 m/s
2
1.8 m/s
2
Weight 9.9 kg 9.7 kg 9.5 kg
1
) Weighted equivalent level includes idling, full load and racing with the same duration of exposure
Low-speed adjusting screw L: 3/4 turn open
(max. to stop)
High-speed adjusting screw H: 3/4 turn open
(max. to stop)
Low-speed adjusting screw L: 2 turn open
High-speed adjusting screw H: 3 1/2 turn open
Ignition module: Microprocessor-
controlled with
adjustment of the
ignition timing
Spark plug (suppressed): NGK CMR 6 H
Electrode gap: 0.7 mm
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