3JH40
Common-rail Yanmar JH-CR diesel: naturally aspirated 1.642 L inline three rated 40 mhp at 3000 rpm, for sailboats and small motorboats.
The JH-CR series is Yanmar's electronically controlled common-rail JH generation, launched in 2014 with the 4JH45, 4JH57, 4JH80 and 4JH110 and joined by the three-cylinder 3JH40 in 2018. It is based on Yanmar's TNV industrial block with a Bosch common-rail system and ECU, keeps roughly the footprint of the mechanical JH engines for repowers, works with mechanical controls as standard or the VC10/VC20 electronic vessel-control system, and complies with EPA Tier 3 and RCD 2. Yanmar certifies it for recreational and light-duty commercial use.
The 3JH40 succeeded the mechanical 3JH5E and was presented as the smallest common-rail inboard diesel on the market. Yanmar lists it with KM35P, KM35A, ZF25 and ZF25A gears or the SD60-5 saildrive.
Specifications
Power
- Power
- 40 hp
- Power (kW)
- 29 kW
- Rated speed
- 3000 rpm
Engine
- Configuration
- inline 3
- Cylinders
- 3
- Displacement
- 1.642 L
- Aspiration
- naturally aspirated
- Weight
- 192 kg
- Fuel
- Diesel
- Mounting
- Inboard
Reviews
No independent reviews on file yet.
Sources
- 1. JH Series Operation Manual: 3JH40, 4JH45, 4JH57, 4JH80, 4JH110 (0AJHC-EN001F, Sep 2025) — Yanmar
- 2. 3JH40 product page (Wayback capture) — Yanmar Marine International
- 3. JH-CR Series (yanmar.com, Wayback capture) — Yanmar Marine International
- 4. Yanmar Rolls Out New Marine Power Offerings (19 Jan 2018) — MarineLink
- 5. Yanmar Breeds New Horses — PassageMaker
Specifications compiled from manufacturer sources.