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TECHNICAL DATA
115 10 81-26 Rev.2 2008-01-11
Technical data
Note 1: Noise emissions in the environment measured as sound power (L
WA
) in conformity with EC directive 2000/14/EC.
Note 2: Equivalent sound pressure level, according to ISO 22868, is calculated as the time-weighted energy total for
noise pressure levels under various working conditions with the following time distribution: 1/3 idling, 1/3 max. load,
1/3 max. speed.
Note 3: Equivalent vibration level, according to ISO 22867, is calculated as the time-weighted energy total for vibration
levels under various working conditions with the following time distribution: 1/3 idling, 1/3 max. load, 1/3 max. speed.
445 445e 450e
Engine
Cylinder displacement, cm
3
45,7 45,7 50,2
Cylinder bore, mm 42 42 44
Stroke, mm 33 33 33
Idle speed, rpm 2700 2700 2700
Power, kW/ rpm 2,1/9000 2,1/9000 2,4/9000
Ignition system
Manufacturer of ignition system Walbro Walbro Walbro
Type of ignition system MBU-16 MBU-16 MBU-16
Spark plug
NGK BPMR 7A/
Champion RCJ 7Y/
Husqvarna PR 17Y
NGK BPMR 7A/
Champion RCJ 7Y/
Husqvarna PR 17Y
NGK BPMR 7A/
Champion RCJ 7Y/
Husqvarna PR 17Y
Electrode gap, mm 0,5 0,5 0,5
Fuel and lubrication system
Manufacturer of carburettor Zama Zama Zama
Carburettor type EL 37 EL 37 EL 37
Fuel tank capacity, litre 0,45 0,45 0,45
Oil pump capacity at 9,000 rpm, ml/min 13 13 13
Oil tank capacity, litre 0,26 0,26 0,26
Type of oil pump Not adjustable Not adjustable Not adjustable
Weight
Chain saw without bar or chain, empty tanks, kg 4,9 5,1 5,1
Noise emissions (see note 1)
Sound power level, measured dB(A) 112 112 113
Sound power level, guaranteed L
WA
dB(A) 114 114 115
Sound levels (see note 2)
Equivalent sound pressure level at operator’s ear, measured
according to relevant international standards, dB(A)
103 103 104
Vibration levels (see note 3)
Front handle, m/s
2
1,9 1,9 2,3
Rear handle, m/s
2
2,6 2,6 2,7
Chain/bar
Standard bar length, inch/cm 13"/33 13"/33 13"/33
Recommended bar lengths, inch/cm 13-20/33-50 13-20/33-50 13-20/33-50
Usable cutting length, inch/cm 12-19/31-49 12-19/31-49 12-19/31-49
Pitch, inch/mm 0,325/8,25 0,325/8,25 0,325/8,25
Thickness of drive links, inch/mm 0,050/1,3 0,050/1,3 0,050/1,3
0,058/1,5 0,058/1,5 0,058/1,5
Type of drive sprocket/number of teeth Spur/7 Spur/7 Spur/7
Chain speed at max. power, m/sec 17,3 17,3 17,3