I have a B&S 3.5 hp engine that I purchased on a mower in the early 70's. There is no identification on the mower as to series or model number. The engine was on a Toro mower which I want to use but I can't find an engine that will fit the mounting holes on the deck so I am interested in repairing the B&S engine but without a model number I don't know what parts to order. Any help would be appreciated. Thanks
When looking up parts for these older Briggs engines, you need to add a "0" before the model number. Also, leave off the last two digits or replace them with "99". None of the parts sites worry about the last two digits, apparently they're not necessary for ordering parts.