JH Series 28.7â92kW (39â125HP) 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 4JH4-TE (75HP/55kW) Highly efficient and light in weight, this tough four-cylinder diesel is available with straight or angle drive, mechanically or hydraulically activated.âTechnical Specification: