We have a 1995 Vermeer 1250 that had a brand new autofeed put on it in spring. The autofeed has not worked since we have owned the machine. We had the dealer who put the autofeed on it look at and and "fix" the problem. However the autofeed still doesnt work. The chipper runs fine.... its just like the autofeed just doesnt exist. One thing that I am wondering is, our chipper doesnt have a tachometer so does this mean the autofeed can't work on our machine? Does the autofeed detect engine RPMs off of the non-existent tach, or does it detect RPMs off of the engine somewhere else?