Engine Model 4BY2-150 /
150Z
4BY2-180 /
180Z
6BY2-220 /
220Z
6BY2-260 /
260Z
Weight (without marine gear)
Dry (without mixing
elbow)
For Stern Drive: 273.5 kg (603 lb)
For Marine Gear: 262.5 kg (575.7 lb)
For Stern Drive: 338 kg (745 lb)
For Marine Gear: 319 kg (703 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 1 hp (metric horsepower) = 0.7355 kW Fuel condition: Density at 15°C (59°F)
= 0.840 g/cm
3
Fuel temperature at the inlet of the fuel injection pump
*** 1080 rpm at startup for alternator excitation
**** 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.
SPECIFICATIONS
BY Series Operation Manual 73
© 2008 Yanmar Marine International
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