Northern Lights M673L2, Operator'S Manual

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OM673L2 08/05
2
Northern Lights Marine data
Model:
M673L2 & Ld2
RPM 1800 1500
kW Rating 5.0 4.5
Frequency (Hz) 60 50
gENERAL INfORMATION
Cylinders 3 3
Displacement 46.4 in
3
46.4 in
3
(0.761 ltr) (0.761 ltr)
Cycle 4 4
Bore 2.64 in 2.64 in
(67 mm) (67 mm)
Stroke 2.83 in 2.83 in
(72 mm) (72 mm)
Rotation (facing flywheel) ccW ccW
Compression Ratio 23.5:1 23.5:1
Crankcase Capacity w/ Oil Filter 3.3 qts 3.3 qts
(3.1 ltr) (3.1 ltr)
Aspiration Natural Natural
Dry Weight / Complete Unit 362 lbs 362 lbs
(164 kg) (164 kg)
Height 20.25 in 20.25 in
(514.5 mm) (514.5 mm)
Width 17.1 in 17.1 in
(434 mm) (434 mm)
Length 27.1 in 27.1 in
(688 mm) (688 mm)
cOOLINg SySTEM
Approximate Cooling System Capacity .5 gal .5 gal
(2 ltr) (2 ltr)
Minimum Through-Hull Diameter 0.75 in 0.75 in
(19 mm) (19 mm)
Raw Water Pump Inlet Hose I.D. 0.75 in 0.75 in
(19 mm) (19 mm)
Minimum Seawater Discharge 0.75 in 0.75 in
(19 mm) (19 mm)
Heat Rejection to Jacket Water 350 bTU/min 250 bTU/min
Fresh Water Pump Capacity 5.0 gal/min 4.2 gal/min
(18.92 ltr/min) (15.77 ltr/min)
Maximum Seawater Pump Suction Head 39 in 39 in
(1 m) (1 m)
Seawater Pump Capacity 8.0 gal/min 7.0 gal/min
(30 ltr/min) (26 ltr/min)
Keel Cooler Turbo Tube Length 4 ft 4 ft
(1.2 m) (1.2 m)
Keel Cooler Head Diameter 0.75 in NPT 0.75 in NPT
(19.1 mm) (19.1 mm)
Keel Cooler Water Hose I.D.
Discharge and Suction 1.0 in 1.0 in
(25 mm) (25 mm)