McCulloch MAC 740 Manual de instrucciones descargar pdf (Pagina 17)

17

TECHNICAL DATA SHEET

Engine Mac 738 740 742

Cylinder volume, cm

3

38 40 42

Stroke, mm 32 32 32

Idle speed, rpm 3000 3000 3000

Recommended max.

speed, unloaded, rpm 12000 12000 12000

Power, kW 1,5 1,5 1,6

Ignition system

Manufacturer Walbro

T ype of ignition system Inductive

Spark plug Champion

Electrode gap, mm 0,5

Fuel and lubrication system

Manufacturer Zama

Carburetor type W-26B

Fuel capacity , litre 0,34

Oil pump capacity at

8500 rpm, ml/min 4 -- 8

Oil capacity, litre 0,2

T ype of oil pump Automatic

Weight

Without bar and chain, kg 5,5

BAR CHAIN

Length Pitch Max

Inches Inches Tip Radius

14 0,375 7T Oregon 91VJ

14 0,375 7T Oregon 91VG

16 0,375 7T Oregon 91VJ

16 0,375 7T Oregon 91VG

Noise levels Mac738/740/742

Equivalent (see note 1) noise

pressure level at operator’s ear,

measured according to relevant

international standards, dB(A) 99,7

Equivalent (see note 1) noise

power level, measured

according to relevant

international standards, dB(A) 108,7

Vibration levels

(see note 2)

Front handle, m/s

2

5,4

Rear handle, m/s

2

5,4

Chain/bar

Standard bar length, in/cm 14/35 16/40

Recommended bar lengths,

in/cm 14/35 16/40

Usable cutting le ngth, in/cm 13,5/34 15,5/39

Chain speed at maximum

power, m/sec 18,5

Pitch, inches 0,375

Thickness of drive link, mm 1,3

No. of teeth on drive sprocket 6

Note1: Equivalent noise level is, accordingto

ISO 22868, calculated as the time--weighted

energy total for noise levels under various

working conditions with the following time dis-

tribution, 1/3 idle, 1/3 full load, 1/3 full speed.

Note2: Equivalent vibrationlevelis,according

toISO 22867,calculatedas thetime--weighted

energy total for vibration levels under various

working conditions with the following time dis-

tribution: 1/3 idle, 1/3 full load, 1/3 full speed.

0,375

80° 30°

0°

14/35:52

16/40:56

0,050/1,3 5/32 / 4,0 0,025/0,65

91VJ

in/cm :dl

91VG

0,375

0,050/1,3

5/32 / 4,0

80°

30°

0° 0,025/0,65

14/35:52

16/40:56

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