Yanmar 3JH5E Inboard Diesel Engine Marine Power Unit
Yanmar 3JH5E Specs
| Brand | Yanmar |
| Full Model Code / Configuration | 3JH5E (Vertical 4-cycle water-cooled diesel engine) |
| Country of Origin | Japan |
| Engine Series / Family | JH Series |
| Engine Type / Cylinder Block | Inline-3, 4-Stroke |
| Displacement | 1.642 Liters / 1,642 cc |
| Rated Horsepower | 39 HP (28.7 kW) @ 3000 RPM |
| Maximum Torque | 112 Nm @ 1900 RPM |
| Rated Engine Speed / Redline RPM | 3000 RPM |
| Aspiration & Induction | Naturally Aspirated |
| Fuel System / Injection | Direct Injection (In-line Bosch-type MP pump) |
| Bore x Stroke | 88 mm x 90 mm |
| Compression Ratio | 18.5:1 |
| Electrical System Voltage | 12V |
| Alternator Output | 125 Amps |
| Cooling System Type | Fresh Water Heat Exchanger (Closed-loop with sea water heat exchanger) |
| Coolant Capacity | 4.5 Liters |
| Exhaust System / Configuration | Wet Exhaust (Water-injected mixing elbow) |
| Emission Compliance | EU RCD 1, US EPA Tier 3, BSO II |
| Lubrication System Capacity | 5.5 Liters (Max capacity) |
| Recommended Oil Grade | SAE 15W-40, API CD/CE/CF/CI-4 |
| Fuel Type / Requirement | Diesel Fuel (ISO 8217 DMA / BS2869 A1 or A2) |
| Fuel Consumption at Cruising Speed | 5.2 Liters/hour @ 2600 RPM (Approx. 75% load) |
| Compatible Marine Gear / Transmission | Kanzaki KM35A, Kanzaki KM35P, ZF25A, SD60 (Saildrive) |
| Available Gear Ratios | 2.33:1, 2.64:1 (KM35A) / 1.93:1, 2.48:1 (ZF25A) / 2.23:1, 2.49:1 (SD60) |
| Drive Type Compatibility | Shaft Drive / Saildrive |
| Dry Weight - Engine Only | 173 kg |
| Dry Weight - with Transmission | 186 kg (with KM35A) / 217 kg (with SD60 Saildrive) |
| Dimensions - L x W x H | 819 mm x 529 mm x 622 mm (with KM35A) |
| Governor / Engine Control Unit | Mechanical Centrifugal All-speed Governor |
| Control System Interface | Mechanical Cables (Analog/Digital Yanmar B25/C35 panels) |
| Starting System | Electric starter motor 1.4 kW |
| Flywheel & Housing Size | SAE No. 5 |
| Standard Warranty | 2 Years / 2000 Hours (Recreational use) |
| Application | Cruising sailboats (35–42 feet), mid-sized catamarans, and displacement coastal cruisers. |
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