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TECHNICAL DATA
Note 1: Equivalent noise pressure level is calculated as the time-weighted energy total for noise pressure levels under various
working conditions with the following time distribution: 1/2 idle and 1/2 max. speed.
NOTE! Noise pressure at the user’s ear and vibration on the handles are measured with all the machine’s approved cutting
equipment fitted. The table indicates the highest and lowest values.
Technical data 250R 252RX 265RX
Engine
Cylinder displacement, cu.in/cm
3
2,45/40,2 3,1/50,9 3,97/65,1
Cylinder bore, inch/mm 1,73/44 1,77/45 1,89/48
Stroke, inch/mm 1,26/32 1,26/32 1,42/36
Idle speed, rpm 2700 2700 2250
Recommended max. speed, rpm 12500 14000 11500
Speed of output shaft, rpm 9190 10300 9120
Max. engine output, acc. to ISO 8893 2,1/9000 2,4/9000 3,0/8400
Catalytic converter muffler No No No
Ignition system
Manufacturer/type of ignition system EM/ET EM/ET SEM GA 6CD
Spark plug
NGK BPMR 7A/
Champion RCJ 7Y
NGK BPMR 7A/
Champion RCJ 7Y
NGK BPMR 7A/
Champion RCJ 7Y
Electrode gap, inch/mm 0,02/0,5 0,02/0,5 0,02/0,5
Fuel and lubrication system
Manufacturer/type of carburetor Walbro HDA Walbro HDA Tillotson HS
Fuel tank capacity, US pint/litre 1,70/0,8 1,70/0,8 2,11/1,0
Weight
Weight without fuel, cutting attachment and guard, Lbs/kg 20,3/9,2 19,6/8,9 23,8/10,8
Sound levels
(see note 1)
Equivalent sound pressure level at the user′s ear,
measured according to ANSI B175.3-1997, dB(A), min/
max:
97/104 96/103 98/100
Vibration levels
Vibration levels at handles, measured according to ANSI
B175.3-1997, m/s
2
At idle, left/right handles, min.: 2,7/3,2 2,8/2,8 4,5/4,0
At idle, left/right handles, max.: 3,5/6,0 4,5/3,9 5,1/4,6
At max. speed, left/right handles, min.: 1,0/1,0 1,2/1,4 3,0/3,9
At max. speed, left/right handles, max.: 2,1/2,0 1,6/1,7 3,9/5,1