Yanmar 3YM20 Diesel Engine

Uncompromised engineering

3YM20

Specifications

Rated output15.3 kW / 21 mhp
Rated Speed3600 rpm
Displacement0.854 L / 52.1 cu. in
No. of cylinders3 cylinders
Cylinder Bore x Stroke70 mm x 74 mm / 2.76 in x 2.91 in
Combustion systemIndirect Injection, In-line Pump
AspirationNatural
Alternator12V – 125A
Dry weight without gear110 kg / 243 lbs
Dimensions694 mm x 463 mm x 600 mm
ControlsMechanical
CertificationsRCD 2 EPA Tier 3 EPA Tier 3C BSO II EMC

NOTE:
1 kW = 1.3596 mhp = 1.34102 bhp
Fuel condition: density at 15°C = 0.842 g/cm³
Technical data is according to (ISO 8665) / (ISO 3046)
Fuel temperature 40°C at the inlet of the fuel injection pump (ISO 8665)
Length includes KM2P-1 marine gear & height includes U-type elbow
(Dimensions may vary with other gears/elbow)

HVO-approved engine
3YM20

Performance Curves

3YM20 power curve
3YM20 power curve
3YM20 torque curve
3YM20 torque curve
3YM20 fuel curve
3YM20 fuel curve

Technical Drawings

3YM20 with KM2P-1 rear drawing
3YM20 with KM2P-1
3YM20 with KM2P-1 right side drawing
3YM20 with KM2P-1

Packages

Standard Engine Package

  • Exhaust mixing elbow [L-type]
  • Alternator 12V – 125A
  • B20 panel
  • Flexible mounts
  • Expansion tank for fresh water cooling system
  • Electric stop solenoid
  • Belt safety cover

Optional Accessories

  • High-riser mixing elbow [instead of L-elbow]
  • Extension wire harness [4m, 6m]
  • Dual harness [for 2nd station]
  • TFX Sidemount control head
  • Hot water kit with cocks
  • Extension saildrive leg [50 mm]
  • Propeller cone nut kit SD25
  • On-board spare parts kit