PERIODIC MAINTENANCE
JH Series Operation Manual
115
Inspection and Maintenance of Emission-Related Parts
• Marine Compression-Ignition (CI) engines less than 37 kW: 3JH40 and 4JH45 common
rail engines are certified by EPA and ARB
• Marine diesel engines greater than 37 kW: 4JH57, 4JH80 and 4JH110 common rail
engines are certified as EPA CI marine engines
Inspection and Maintenance of Emission-Related Parts of Marine CI Engines
Note: YANMAR recommends that the inspection and maintenance items shown above be
performed at an authorized YANMAR dealer or distributor.
Parts
Minimum Interval
Clean fuel injectors
1500 hours
Check fuel injectors
3000 hours
Check turbocharger adjustment (if equipped)
Check electronic engine control unit and its associated sensors
and actuators (if equipped)
3JH40_4JH45_4JH57_4JH80_4JH110_EN_OPM.book 115 ページ 2022年9月22日 木曜日 午後6時17分