Printed in Japan M9961-03E101 R1 Publication No. M9961-03E101 History of Revision Manual Name Service Manual for Marine Diesel Engine Engine Model: 3YM30/3YM20/2YM15 Number of revision Date of revision Reason for correction Outline of correction Correction item No (page) Corrected by New edition March 2004 R1 April 25, 2005 Add : Eug. Model 2YM15 1. Specifications table added. 2. Engine outline added. 3. Piping diagram added. 4. Other data added. Quality Control Dept. Marine Factory Corrected data. (3YM30, 3YM20) 1. Front cover added to engine outline. 2. Notice on seawater pump rotating direction was changed. 3. Incorrect word corrected. P.6-P.9 P.32