Yanmar BY Series Service Manual page 52

PERIODIC MAINTENANCE
Inspection and Maintenance of EPA Emission-Related Parts
Clean fuel injection nozzle
Check fuel injection nozzle adjustment
Check fuel injection pump adjustment
Check turbocharger adjustment
Check electronic engine control unit (ECU) and its associated
sensors and actuators
4-8
Parts
© 2009 Yanmar Marine International
Periodic Maintenance Schedule
Interval
1500 hours
3000 hours
BY Service Manual