INTRODUCTION2 YM Series Operation ManualYM SERIES EMISSION CONTROL SYSTEMWARRANTY-USA, THE ENVIRONMENTAL PROTECTIONAGENCY (EPA) ONLYYM series engines come with an emission control system warranty. In all states, 2009 andlater compression-ignition engines must be designed, built and equipped to meet theUnited States EPA emissions standards. Yanmar warrants the emission control system onyour YM series engine for the periods of time listed below.Note: Since 2013, the 3YM30 does not comply with the EPA regulation.Emission Control CertificationModel Year 2011 2012 2013 20142YM15 EPA marine CI Tier 33YM20 EPA marine CI Tier 33YM30E - EPA marine CI Tier 3intermediate (NTE) -3YM30 EPA marine CI Tier 3 intermediate -