Yanmar 4BY, Service Manual

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GENERAL SERVICE INFORMATION
3-18
BY Service Manual
Principal Engine Specifications
Coolant Capacity
(Approximate)
10.0 L (10.6 qt) 13.5 L (14.3 qt)
Seawater Pump Rubber impeller, belt-driven
Capacity 140 L/min (37 gpm) at 4000 engine rpm
Maximum Lift 2000 mm (78.75 in.)
Hydraulic Oil Cooler Seawater cooled
Lubrication System Totally enclosed, forced lube system
Oil Cooler Engine coolant system
Lube Oil Pressure at
Rated Speed
3.8 - 6.0 bar (55 - 87 psi)
Lube Oil Pressure at 1000
rpm
0.7 - 0.8 bar (10 - 12 psi)
Lube System Capacity*** 8.0 L (8.5 qt)**** 11.0 L (11.5 qt)****
Crankcase Ventilation Closed, with filter
Drive Options
Stern Drive Bravo-1, -2, -3
Marine Gear ZF45A; Kanzaki
Operational Angles (front-to-rear and left-to-right)
Continuous ± 10°
Peak ± 20°
Height 721 mm (28.4 in.)
Length (without marine gear)
Stern Drive
(front-to-middle of engine
mount)
760 mm (29.9 in.) 942 mm (37.1 in.)
Marine Gear
(front-to-marine gear
mounting face)
644 mm (25.4 in.) 825.5 mm (32.5 in.)
Overall Length 861 mm (33.9 in.) 1001 mm (39.4 in.)
Width 670 mm (26.4 in.) (local exceeding)
Weight (without marine gear)
Dry (without mixing
elbow)
250 kg (551 lb) 310 kg (683 lb)
Wet (with mixing elbow) 270 kg (595 lb) 340 kg (750 lb)
* Cylinder numbering starts at the coolant pump end of the engine.
** Rating condition: ISO 8665. Temperature of fuel: 40°C (104°F) at fuel pump inlet.
Fuel condition: Density at 15°C (59°F) = 0.827 g/cm
3
.
Fuel temperature at the inlet of the fuel injection pump.
1 hp (metric horsepower) = 0.7355 kW
*** The “Total Engine Lubricating Oil Capacity” includes oil in the oil pan, channels, coolers, and filter.
The “Effective Engine Lubricating Capacity” indicates the difference in maximum scale of the dipstick and
minimum scale.
**** Capacity may vary depending on installation angle.
Engine Model 4BY150 / 150Z 4BY180 / 180Z 6BY220 / 220Z 6BY260 / 260Z