EF233M (mechanical transmission model) The EF233M, Yammar’s EF200 series mechanical transmission tractor, is the perfect tractor for those whose work is focused on rear PTO applications. Though the structured of the tractor itself is purposefully simple, Yanmar has installed Yanmar`s TNV direct-injection diesel engine for more than enough power in addition to lowered fuel costs. Then, in order to enable you to smoothly handle a wide range of attachments. Easy to-use positioning of the levers and on work speeds that correspond to all types of implements. Synchronised reverser: Switch between forward and reverse with just a single lever. The EF233M`s synchronised gear allows forward and reverse switching to be accomplished much more smoothly than ever before.