GENERAL SERVICE INFORMATION Principal Engine Specifications * 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) = 0.840 g/cm 3 . Fuel temperature at the inlet of the fuel injection pump. 1 hp (metric horsepower) = 0.7355 kW *** 1080 rpm @ startup for alternator excitation. **** Capacity may vary depending on installation angle. 3-22 BY Service Manual © 2009 Yanmar Marine International Engine Model 4BY2-150 / 150Z 4BY2-180 / 180Z 6BY2-220 / 220Z 6BY2-260 / 260Z Seawater Pump Rubber impeller, belt driven Capacity 165 L / minute minimum (174 qt.
/ minute minimum) at maximum rated 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 4000 rpm 3.5 to 6.0 bar (51 to 87 psi) Lube Oil Pressure at 1000 rpm 0.6 to1.0 bar (8.7 to 14.5 psi) Lube System Capacity**** 8.0 L (8.45 qt) 11.0 L (11.62 qt) Crankcase Ventilation Closed, with filter Drive Options Stern Drive ZT350 or MerCruiser Bravo-1, -2, -3 Marine Gear KMH40 or KMH50 KMH50 Installation Angles: Static Angle Front-to-Rear ± 4° Left-to-Right ± 0° Operational Angles Continuous Front-to-Rear: -5 to 20°, Side-to-Side: 20° Peak Front-to-Rear:
-10 to 25°, Side-to-Side: 30° Height 721 mm (28.4 in.) Length (without marine gear) Stern Drive (front-to-middle of engine mount) 736 mm (30.0 in.) 942 mm (37.1 in.) Marine Gear (front-to-marine gear mounting face) 644 mm (25.4 in.) 827.5 mm (32.5 in.) Overall Length 839 mm (33.0 in.) 1001 mm (39.4 in.) Width 670 mm (26.4 in.) (local exceeding) Dry Weight (without marine gear / drive or mixing elbow) For Stern Drive: 273.5 kg (603 lb) 338 kg (745 lb) For Marine Gear: 262.5 kg (578.7 lb) 319 kg (703 lb)