They came out in 89 and in 92_93 they changed the engine. Grandpa has a 93 9400 at 190hp. Nice combine. No engine problems. Few others but nothing major. Nothing more then what grandpa did himself. Take care, Nathan
In (I believe) 92_93 they changed from a 359CID to a 414CID engine; - a great improvement. My friend dealt his "early model" 9400 to a later 9400 purely for the engine; - no other reason.