English – 207
TECHNICAL DATA
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 is calculated as the time-weighted energy total for sound pressure levels under
various working conditions with the following time distribution: 1/2 idling and 1/2 max speed.
NOTE! The noise pressure level at operator’s ear and vibrations on the handles are measured with all the approved
cutting attachments for the machine. The table indicates the lowest and highest values.
253RJ
Engine
Cylinder displacement, cm
3
50,6
Cylinder bore, mm
45,5
Stroke, mm
31,1
Idle speed, rpm
2800
Recommended max. speed, rpm
13000
Speed of output shaft, rpm
9285
Max. engine output, acc. to ISO 8893
2,3/9500
Catalytic converter muffler
No
Ignition system
Manufacturer/type of ignition system
Oppama
Spark plug
NGK CMR7H
Electrode gap, mm
0,6-0,7
Fuel and lubrication system
Manufacturer/type of carburettor
Walbro WT
Fuel tank capacity, litre
0,8
Weight
Weight without fuel, cutting attachment and guard, kg
7,9
Noise emissions
(see note 1)
Sound power level, measured dB(A)
117
Sound power level, guaranteed L
WA
dB(A)
118
Noise levels
(see note 2)
Equivalent noise pressure level at the operator's ear,
measured according to EN ISO 22868, dB(A), min./max.:
101/105
Vibration levels
Vibration levels at handles, measured according to
EN ISO 22867, m/s
2
At idle, left/right handles, min.:
1,1/2,0
At idle, left/right handles, max.:
1,8/3,0
At max. speed, left/right handles, min.:
3,7/3,0
At max. speed, left/right handles, max.:
9,3/12,2
H1151554-10,253RJ.fm Page 207 Tuesday, April 28, 2009 3:56 PM
