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Yanmar® Sailboat Power

For sailboats, the GM and JH3 series provide:

  • dependable auxiliary propulsion for use in and around port areas.

  • electricity, hydraulic power, hot water, etc...

  • and independent power source in case of an emergency.

You may also review a complete Yanmar®engine listing that has current production engines as well as those that are no longer in production.

Marine Diesel Direct™ holds a large inventory of spare parts for your engine including easy to buy spare parts kits and gasket sets tailored to your particular engine.  When you think Yanmar®, think Marine Diesel Direct™

Review the Yanmar® Engine Warranty

More information on the Saildrive Models

For sailboat engine price quote, please fill out our quote form.  

*Note - We are only able to quote Yanmar engines if you are located in MICHIGAN

 
Current Models Standard Transmission Cylinders Cooling Horsepower
1GM10 KM2P
(Reduction Ratio)
2.62:1 		1 Raw Water 9.1
2GM20F KM2P
(Reduction Ratio)
2.62:1		 2 Fresh Water 18.2
3GM30F KM2P
(Reduction Ratio)
2.62:1		 3 Fresh Water 27.3
3JH3E KM3P
(Reduction Ratio)
2.62:1		 3 Fresh Water 40.0
4JH3E KBW20-1
(Reduction Ratio)
2.62:1		 4 Fresh Water 56.0
4JH3-TE KBW21
(Reduction Ratio)
2.62:1		 4 Fresh Water 75.0
4JH3-HTE KBW21
(Reduction Ratio)
2.62:1		 4 Fresh Water 100.0
4JH3-DTE KMH4A
(Reduction Ratio)
2.45:1 Hydraulic		 4 Fresh Water 125.0
Saildrives
1GM10C SAILDRIVE SD20
(Reduction Ratio)
2.64:1		 1 Raw Water 9.1
2GM20FC SAILDRIVE SD20
(Reduction Ratio)
2.64:1		 2 Fresh Water 18.2
3GM30FC SAILDRIVE SD20
(Reduction Ratio)
2.64:1		 3 Fresh Water 27.3
3JH3C SAILDRIVE SD40-3
(Reduction Ratio)
2.31:1		 3 Fresh Water 40.0
4JH3C SAILDRIVE SD40-4
(Reduction Ratio)
2.31:1		 4 Fresh Water 52.0
 

Engine Dimensions*

 Overall Width Overall Length Overall Height  Mount Centers
1GM10
167 lbs		 16.54 27.4 19.09 14.56
2GM20F
251 lbs		 19.00 25.59 22.32
with u-type elbow		 14.56
3GM30F
302 lbs		 17.91 28.94 22.32
with u-type elbow		 14.56
3JH3E
410 lbs		 20.5 31.51 24.60 16.54
4JH3E
492 lbs		 22.17 35.21 24.41 16.54
4JH3-TE
549 lbs		 22.06 35.68 24.99 16.54
4JH3-HTE
569 lbs		 22.66 35.68 25.98 16.54
4JH3-DTE
573 lbs		 22.85 36.93 26.00 16.54
Saildrives
1GM10C 17.12 28.15 19.88** 14.56
2GM20FC 17.12 37.77 20.28** 14.56
3GM30FC 17.12 41.12 23.7** 14.56
3JH3C 20.5 39.11 23.39** 16.54
4JH3C 21.15 42.81 24.72** 16.54

*dimensions are in inches and with the standard transmission installed
**Saildrive height is measured from the top of the engine to the Saildrive mount.  

-All data subject to change without notice
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Many Features Which Are Standard Equipment
  • Flexible engine mounts
  • Fuel filter
  • Air intake silencer
  • U-type mixing elbow (most models)
  • 3 meter harness (1GM10 to 3GM30F)
  • 4 meter harness (3JH3 to 4JH3-DTE)
  • 35 amp alternator (1GM10)
  • 55 amp alternator (2GM20 to 3GM30F)
  • 80 amp alternator (3JH3 to 4JH3-DTE)
  • 12 volt electric start
  • Stop cable (1GM10 to 3GM30F)
  • Electric stop solenoid (3JH3 to 4JH3-DTE)
  • Instrument panel
  • Fuel/Water separator 
  • Propeller shaft coupler
  • Tool kit
  • Operations manual
  • Standard transmission

The Yanmar® B-Type panel is standard with most engine packages 
( 1GM10  to  3JH3 )

  • tachometer
  • six lights with alarms
  • buzzer
  • key switch
  • start button