McCulloch MAC 838 - Manual (Page 17)

17
TECHNICAL DATA SHEET
Engine Mac 838
Cylinder volume, cm 3 38
Stroke, mm 32
Idle speed, rpm 3000
Recommended max.
speed, unloaded, rpm 12000
Power, kW 1,5
Ignition system
Manufacturer Walbro
Type 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
Type 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
Noise levels Mac 8 38
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
Recommended bar lengths, in/cm 14/35
Usable cutting length, in/cm 13,5/34
Chain speed at maximum
power, m/sec 20
Pitch, inches 0,375
Thickness of drive link, mm 1,3
No. of teeth on drive sprocket 6
Note 1: Equivalent noise level is, according to
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.
Note 2: Equivalent vibration level is, according
to ISO 22867, calculated as the time--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 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