2GM20F
The Yanmar 2GM20F is the freshwater-cooled version of the 2GM20: a 0.636-litre two-cylinder marine diesel rated 18 hp (13.4 kW) at 3600 rpm, with a heat exchanger in place of direct seawater cooling. It was a common sailboat auxiliary, sold with a KM2P gear, a V-drive or a saildrive.
The 2GM20 is the two-cylinder engine of Yanmar's GM10 generation, which replaced the original 2GM with a larger 75 mm bore (75 x 72 mm, 0.636 L versus 0.586 L). It is a vertical four-stroke with a swirl pre-combustion chamber and electric starting with a manual fallback. The F version adds a closed freshwater circuit with heat exchanger and has electric starting only; output is identical to the seawater-cooled 2GM20.
It was sold with the KM2P reverse gear (ratios 2.21, 2.62 or 3.22:1), as the 2GM20FV with a KM3V V-drive, and as the 2GM20FC with the SD20 saildrive. It was replaced by the YM series in the mid-2000s.
Specifications
Power
- Power
- 18 hp
- Power (kW)
- 13 kW
- Rated speed
- 3600 rpm
Engine
- Configuration
- inline 2
- Cylinders
- 2
- Displacement
- 0.636 L
- Aspiration
- naturally aspirated
- Weight
- 114 kg
- Fuel
- Diesel
- Mounting
- Inboard
Reviews
No independent reviews on file yet.
Sources
- 1. Yanmar 2GM20F(V) sales brochure — Yanmar Diesel Engine Co. (hosted by SaltWaterDiesels)
- 2. Service Manual 1GM10(C), 2GM20(F)(C), 3GM30(F)(C), 3HM35(F)(C) (2002.4) — Yanmar (hosted by Jeanneau Owners Network)
- 3. Operation Manual 1GM10, 2GM20(F), 3GM30(F), 3HM35(F) 128270-4E — Yanmar Diesel Engine Co. (hosted by J/109 class)
- 4. Yanmar 2GM Series Marine Diesel Engines — SaltWaterDiesels.com
Specifications compiled from manufacturer sources.