I recently purchased a 1971 Sears HT-14. Model number is 917.25600. It has a single cyl. Briggs engine. I haven't been able to locate the model number for the ENGINE. Sears and Briggs are unable to help (or unwilling). Anybody know how I can find out the model number so I can order parts? Also, I have a 42" mower deck, and haven't been able to locate the model number for it, either. Any help would be appreciated!