Juli 2014 12:14 12 TCD 4.1 L4 TCD / TTCD 6.1 L6 Operation Manual EU Stage IV / US DEUTZ air/liquid-cooled engines are developed for a broad spectrum of The DEUTZ TCD 4.1 and 6.1 are the compact, water-cooled, 4- and 6-cylinder inline engines for agricultural machinery with a power range from 122 to 283 hp.TCD 2013 L04/06 V2 Illustrations and data in this instruction manual are 6.1.1. Oil change intervals. 6.1.2. Checking oil level, changing engine oil. TCD 4.1 L4. TCD / TTCD 6.1 L6. Operating manual. EU Stage IV / US EPA Tier 4. Notes. ○ This engine is defined exclusively for purpose.