Yanmar Marine has been building diesel engines since 1912, with the continuing design philosophy of “more power and less weight”.
It produced the first-ever commercially viable small diesel engine, back in 1933. Yanmar has introduced ever-more energy efficient and economical engines and implements a constant process of research, development and innovation. It is a globally recognised brand, producing diesel engines, which are not only for leisure and commercial boating.
| Model | Power | Specification |
| GM-YM Series | 9 hp - 29 hp | Download Brochure |
| JH Series | 39 hp -110 hp | Download Brochure |
| BY Series | 150 hp - 260 hp | Download Brochure |
| LP Series | 315 hp | Download Brochure |
| LY-CX Series | 370 hp - 530 hp | Download Brochure |
| LY3 Series | 380 hp - 480 hp | Download Brochure |
| SY Series | 720 hp - 900 hp | Download Brochure |
| Saildrive Series | 9 hp - 75 hp | Download Brochure |
| Sterndrive Series | 150 hp - 315 hp | Download Brochure |
For technical specifications and outline drawings of each model of the Yanmar engines series', please use the tabs below to access document downloads.
| Model | Spec | Outline Drawings |
| 1GM10 - Inboard Engine 9hp/6kW | Download Spec | KM2P-1 - KM2P-1 |
| 2YM15 - Inboard Engine 14hp/10.3kW | Download Spec | KM2P-1 |
| 3YM20 - Inboard Engine 21hp/16.2kW | Download Spec | KM2P-1 |
| 3YM30 - Inboard Engine 29hp/22.1kW | Download Spec | KM2P-1 |
| Model | Spec | Outline Drawings |
| 3JH5-E - Inboard Engine 39hp/29.4kW | Download Spec | KM35P - KM35A |
| 4JH5-E - Inboard Engine 54hp/40.5kW | Download Spec | KM35P - KM35A2 - KM4A1 - ZF30M |
| 4JH4-TE - Inboard Engine 75hp/55kW | Download Spec | ZF30M - KM4A2 - KMH4A |
| 4JH4-HTE - Inboard Engine 110hp/80.9kW | Download Spec | KM4A2 - KMH4A - ZF30M |
| Model | Spec | Outline Drawings |
| 4BY2 150 - Inboard Engine 150hp/110kW | Download Spec | KMH40A |
| 4BY2 180 - Inboard Engine 180hp/132kW | Download Spec | KMH40A |
| 6BY2 220 - Inboard Engine 220hp/162kW | Download Spec | KMH40A - KMH50A |
| 6BY2 260 - Inboard Engine 260hp/191kW | Download Spec | KMH40A - KMH50A |
| Model | Spec | Outline Drawings |
| 6LPA-STP - Inboard Engine 315hp/232kW | Download Spec | ZF63 |
| Model | Spec | Outline Drawings |
| 6LYA-STP - Inboard Engine 370hp/272kW | Download Spec | Without Gear |
| 6LY3-UTP - Inboard Engine 380hp/279kW | Download Spec | KMH61A |
| 6LY2-STP - Inboard Engine 440hp/324kW | Download Spec | KMH60A - MG5061A |
| 6CX530 - Inboard Engine 530hp/390kW | Download Spec | Without Gear |
| Model | Spec | Outline Drawings |
| 6LY3-STP - Inboard Engine 440hp/324kW | Download Spec | KMH61A |
| 6LY3-ETP - Inboard Engine 480hp/353kW | Download Spec | KMH61A |
| Model | Spec | Outline Drawings |
| 6SY-STP - Inboard Engine 720hp/530kW | Download Spec | ZF325-1 - MG5095SC |
| 8SY-STP - Inboard Engine 900hp/662kW | Download Spec | ZF350A - MG5114IV |
| Model | Spec | Outline Drawings |
| 1GM10-SD - Saildrive Engine 9hp/6.7kW | Download Spec | SD20 |
| 2YM15-SD - Saildrive Engine 14hp/10.3kW | Download Spec | SD20 |
| 3YM20-SD - Saildrive Engine 21hp/16.2kW | Download Spec | SD20 |
| 3YM30-SD - Saildrive Engine 29hp/22.1kW | Download Spec | SD20 |
| 3JH5E-SD - Saildrive Engine 39hp/29.4 kW | Download Spec | SD50 |
| 4JH5E-SD - Saildrive Engine 54hp/40.5kW | Download Spec | SD50 |
| 4JH4HTE-SD - Saildrive Engine 75hp/55kW | Download Spec | SD50-T |
| Model | Spec | Outline Drawings |
| 4BY2 150Z - Sterndrive Engine 150hp/110kW | Download Spec | Bravo X-1 - Bravo X-2 - Bravo X-3 |
| 4BY2 180Z - Sterndrive Engine 180hp/132kW | Download Spec | Bravo X-1 - Bravo X-2 - Bravo X-3 |
| 6BY2 220Z - Sterndrive Engine 220hp/162kW | Download Spec | Bravo X-1 - Bravo X-2 - Bravo X-3 |
| 4LHA-STZP - Sterndrive Engine 240hp/179kW | Download Spec | Bravo X-1 - Bravo X-2 - Bravo X-3 |
| 6BY2 260Z - Sterndrive Engine 260hp/191kW | Download Spec | Bravo X-1 - Bravo X-2 - Bravo X-3 |
| 6LPA-STZP - Sterndrive Engine 315hp/232kW | Download Spec | Bravo X-1 - Bravo X-2 - Bravo X-3 |
