Yanmar 4JH2E

# 50 hp Yanmar 4JH2E marine diesel known worldwide for dependability
# Self bleeding – and it works great! Running a tank dry is no drama, fill and restart instantly
# Racor fuel pre-filter and engine mounted final filter keep fuel clean
# Double belts on alternator/water pump for minimum slippage and high-amperage charging
# 1″ dedicated thruhull for cooling water.
# Quick-change Speedseal saltwater impeller system.
# 100 amp Balmar alternator and smart charger.
# Vetus wet exhaust is quiet, high anti-siphon loop prevents sucking water back into engine

Yanmar 4JH2E Service Manual: 
https://www.manualslib.com/manual/737938/Yanmar-4jh2e.html