Re: Case 646
I've worked wtih Brian at Salem for Parts and there are 2 or 3 more dealers that handle Case - Ingersoll parts. All great to work with. The Case - Ingersoll loader tractors, 644, 646, 648 Ingersoll 6018, 6020, 7020 we produced from 1973 to 2004.. Some parts are No longer available, but used parts sources exist. Some part cross over from the 4xx Case garden tractors and there some of use that have MADE replacement parts in some cases.
Brian is correct, I do not recall a tractor we've not been able to get running yet..
1973 Case 646
1968 Case 155
1958 JI Case 310 Terratrac Crawler Loader