JH Series 28.7–92kW (39–125HP) Three and four-cylinder direct injection diesels with heat exchanger cooling. Choices of natural aspiration, turbocharged and turbo/aftercooler models, with straight drive or angle drive transmissions. Smaller horsepower models are also offered with Saildrive units. JH Series 3JH4 (39HP/28.7kW) The Yanmar’s 3JH4 is an all-new naturally aspirated engine for sailboats and motor craft – quieter, cleaner and producing more torque – with the largest displacement and smallest dimensions in its class. It’s fullfy compliant with EPA Tier 2 emissions regulations and with BSO/SAV Stage 2 requirements.
Technical Specification
Spec Value
Power (crankshaft) 28.7 kW (39 HP) @ 3000rpm
Full throttle operating speed 3000 rpm
Displacement 1.64 litre
Bore x stroke 88 mm x 90 mm
Cylinders 3
Combustion indirect injection
Alternator 60A (80A option)
Cooling system water cooled
