I HAVE THIS LITTLE ST1600 TRACTOR WITH THE KE85 2CYLINDER IM WORKING ON FOR A ELDERLY LADY AND IT'S FILLING THE CRANKCASE WITH DIESEL "FULLCRANKCASE" SO MY THOUGHT IS THAT THE IN INJECTOR PUMP HAS A BAD SEAL OR SOMETHING FOR HOW AND WHERE IT IS MOUNTED AT WOULD LIKE SOME INFO ON THIS AND WHERE TO GET PARTS, OR PART NUMBERS,TO MAYBE REBUILD THE PUMP MY SELF. ANY HELP WOULD BE GREATFUL THANK YOU.