I AM NO EXPERT ON THIS ITEM.  THIS CAME WITH ABOUT 9 OTHER ENGINES THAT HAVE ALL BEEN IN STORAGE FOR A NUMBER OF YEARS .HAVE TRIED TO TURN IT OVER BY HAND BUT IT IS STUCK (I THNIK THIS IS COMMON FOR THESE ENGINES IF LEFT FOR SOME TIME) NOT SURE IF IT HAS BEEN RUN. WAS STORED IN PLASTIC BAG AND HAS GREASE / OIL THAT HAS GONE HARD AND STICKY .OTHERWISE IT LOOKS IN VERY GOOD CONDITION .I HAVE NOT TRIED TO CLEAN IT AND HAVE NOT FIDDLE WITH IT  I WILL LEAVE THAT TO SOMEONE WHO KNOWS WHAT THEY  ARE DOING . PLEASE HAVE A GOOD LOOK AT ALL IMAGES FOR THE OVERALL CONDITION BEFORE BIDDING . THANKS FOR LOOKING .