Northern Lights M673L3, Operator'S Manual

Page: 35 / 52

OM673L3 5/21
33
Northern Lights Marine Data
Model:
M673L3 (G) M673LD3 (G)
RPM 1800 1500 1800 1500
kW Rating
6.0 5.0 5.0 4.5
Frequency (Hz) 60 50 60 50
GENERAL INFORMATION
Cylinders
3 3 3 3
Displacement 46.4 in
3
46.4 in
3
46.4 in
3
46.4 in
3
(0.761 ltr) (0.761 ltr) (0.761 ltr) (0.761 ltr)
Cycle 4 4 4 4
Bore
2.64 in 2.64 in 2.64 in 2.64 in
(67 mm) (67 mm) (67 mm) (67 mm)
Stroke
2.83 in 2.83 in 2.83 in 2.83 in
(72 mm) (72 mm) (72 mm) (72 mm)
Rotation (facing flywheel)
CCW CCW CCW CCW
Compression Ratio 23.5:1 23.5:1 23.5:1 23.5:1
Crankcase Capacity w/ Oil Filter
3.2 qts 3.2 qts 3.2 qts 3.2 qts
(3.0 ltr) (3.0 ltr) (3.0 ltr) (3.0 ltr)
Aspiration
Natural Natural Natural Natural
Dry Weight / Complete Unit 377 lbs 377 lbs 377 lbs 377 lbs
(171 kg) (171 kg) (171 kg) (171 kg)
Height 20.9 in 20.9 in 20.9 in 20.9 in
(530 mm) (530 mm) (530 mm) (530 mm)
Width 19.5 in 19.5 in 19.5 in 19.5 in
(495 mm) (495 mm) (495 mm) (495 mm)
Length 28.5 in 28.5 in 28.5 in 28.5 in
(724 mm) (724 mm) (724 mm) (724 mm)
COOLING SYSTEM
Approximate Cooling System Capacity .5 gal .5 gal .5 gal .5 gal
(2 ltr) (2 ltr) (2 ltr) (2 ltr)
Minimum Through-Hull Diameter
0.75 in 0.75 in 0.75 in 0.75 in
(19 mm) (19 mm) (19 mm) (19 mm)
Raw Water Pump Inlet Hose I.D.
0.75 in 0.75 in 0.75 in 0.75 in
(19 mm) (19 mm) (19 mm) (19 mm)
Minimum Seawater Discharge
0.75 in 0.75 in 0.75 in 0.75 in
(19 mm) (19 mm) (19 mm) (19 mm)
Heat Rejection to Jacket Water 350 BTU/min 250 BTU/min 350 BTU/min 250 BTU/min
Fresh Water Pump Capacity
5.0 gal/min 4.2 gal/min 5.0 gal/min 4.2 gal/min
(18.92 ltr/min) (15.77 ltr/min) (18.92 ltr/min) (15.77 ltr/min)
Maximum Seawater Pump Suction Head
39 in 39 in 39 in 39 in
(1 m) (1 m) (1 m) (1 m)
Seawater Pump Capacity 8.0 gal/min 7.0 gal/min 8.0 gal/min 7.0 gal/min
(30 ltr/min) (26 ltr/min) (30 ltr/min) (26 ltr/min)
Keel Cooler Turbo Tube Length 4 ft 4 ft 4 ft 4 ft
(1.2 m) (1.2 m) (1.2 m) (1.2 m)
Keel Cooler Head Diameter
0.75 in NPT 0.75 in NPT 0.75 in NPT 0.75 in NPT
(19.1 mm) (19.1 mm) (19.1 mm) (19.1 mm)
Keel Cooler Water Hose I.D.
Discharge and Suction 1.0 in 1.0 in 1.0 in 1.0 in
(25 mm) (25 mm) (25 mm) (25 mm)
Updated 8-8-19