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TECHNICAL DATA SHEET
Engine M4620
Cylinder volume, cm
3
46
Stroke, mm 32
Idle speed, rpm 3000
Recomm ended max.
speed, unloaded, rpm 13000
Power, kW 1,9
Ignition system
Manufacturer Walbro
Type of ignition system CD
Spark plug Champion
Electrode gap, mm 0,5
Fuel and lubrication system
Manufacturer Walbro
Carburetor t ype WT--657
Fuel capacity, litre 0,41
Oil pump capacity at
8500 rpm, ml/min 4 -- 8
Oil capacity, litre 0,2
Type of oil pump Automatic
Weight
Without bar and chain, kg 4,7
BAR CHAIN
Length Pitch Max
Inches Inches Tip R adius
20 0,325 7T Oregon 33SL
Noise levels M4620
Equivalent ( see note 1) noise
pressure level at operator’s ear,
measured according to relevant
international standards, dB(A) 103
Equivalent ( see note 1) noise
power level, measured
according to relevant
international standards, dB(A) 111
Vibration levels
(see note 2)
Front handle, m /s
2
5,7
Rear handle, m/s
2
4,5
Chain/bar
Standard bar length, in/cm 20/51
Recommended bar lengths, in/cm 20/51
Usable cutting length, in/cm 19,5/50
Chain speed at m aximum
power, m/sec 21,78
Pitch, inches 0,325
Thickness of drive link, mm 1,3
No. of t e e t h o n drive spro cke t 7
Note1: Equivalent noiselevelis,accordingto
ISO 22868, calculated as the time--weighted
energy tot al for noise levels under various
working conditions with the following tim edis-
tribution, 1/3 idle, 1/3full load,1/3 full speed.
Note2: Equivalentvibrationlevelis,according
toISO22867,calculatedasthetime--weighted
energy total for vibration levels under various
working conditions with the following tim edis-
tribution: 1/3 idle,1/3 full load, 1/3 full speed.
0,325
60° 25°
10°
0,050/1,3 3/16 /4,5 0,025/0,65
33SL
in/cm :dl
20/51:78