Husqvarna 331RB, Workshop Manual

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9 Technical data
9.1 Technical data
331RB
Engine
Cylinder displacement, cm
3
32.6
Cylinder bore, mm 36
Stroke, mm 32
Idle speed, rpm 3000±300
Recommended max speed, rpm 10600
Max. engine output, according to ISO 8893, kW @ rpm 1 kW
Ignition system
Spark plug
NGK BPM7A, TORCH L8RTC
Electrode gap, mm 0.6–0.7
Ignition module air gap, mm 0.3-0.5
Fuel and lubrication system
Fuel tank capacity, litre
1.15
Carburetor
Type
Float
Weight
Without fuel, cutting attachment and guard, kg
9.5
Sound levels
1
Equivalent sound pressure level at the operator’s ear, measured according to
EN ISO 11806 and ISO 22868, dB(A), min./max.:
84.8
Vibration levels
2
Equivalent vibration levels (a
hv,eq
) at handles, measured according to EN ISO 11806 and ISO 22867, m/s
2
:
Front handle, m/s
2
4.6
Rear handle, m/s
2
5.0
Product data
Maximum rpm output shaft
7800
Output shaft thread, mm M10x1.25 Lefthanded
Tube diameter 26
Tube length 1430
Transmission
Drive gear angle
30°
Gear ratio 0.74
1
Reported data for equivalent sound pressure level has a typical statistical dispersion (standard deviation) of 1
dB (A).
2
Reported data for vibration level has a typical statistical dispersion (standard deviation) of 1 m/s
2
.
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