Dolmar PS-420 - Manual (Page 18)

8
Stroke volume cu. in (cm) 2.1 (34,7) 2.6 (42,4)
Bore inch (mm) .50 (8) .65 (42)
Stroke inch (mm) .20 (0,6) .20 (0,6)
Max. power at speed hp / rpm 2,0 / 9.500 2,7 / 9.500
Max. torque at speed Nm /rpm 1,9 / 6.500 2,4 / 6.500
Idling speed / max. engine speed with bar and chain rpm 2.800 / 13.500 2.800 / 13.500
Coupling speed rpm 5.00 5.00
Sound pressure level at the operator´s ear
at full load according to ANSI B 175.1 dB (A) 100,8 100,8
Sound pressure level at the bystanders position
(50 ft/15 m distance) according to ANSI B 175.1 dB (A) 77,4 77,4
Carburetor Type diaphragm carburator with limiter caps
Ignition system Type electronic
Spark plug Type NGK BPMR 7A
or spark plug Type BOSCH WSR 6F, CHAMPION RCJ 6Y
Electrode gap inch (mm) .020 (0,5)
Fuel consumption at max. load per ISO 7293 kg/h 0,79 0,96
Specific consumption at max. load per ISO 7293 g/kWh 526 480
Fuel tank capacity floz 16,2
Chain oil tank capacity floz 9,5
Mixture ratio (fuel/two-stroke oil)
- when using DOLMAR High Performance oil
50 :
- when using other synthetic oils (oil quality must be JASO FC or ISO-L-EGD) 50 :
Chain brake engages manually or in case of kickback
Sprocket pitch inch /8 /8
Number of teeth Z 6 6
Chain type see the Extract from the spare-parts list
Pitch / gauge inch / (mm) /8 / 0,050 (,) /8 / 0,050 (,)
Guide bar, length of a cut inch 2, 4, 6 2, 4, 6
Guide-bar type see the Extract from the spare-parts list
Weight (fuel tank empty, without chain, guide bar and accessories) lbs 0,6 0,6
) Figures derived in equal part from idling, full-load and racing speed.
WARNING:
This chain saw is capable of severe kickback that coult result in serious injury to the user. Do not operate this chain
saw unless you have extraordinary cutting needs and experience and specialized training for dealing with kickback.
Chain saws with significantly reduced kickback potential are available.
Technical data
PS-350 PS-420