My neighbor has a log splitter from Tractor Supply. It has a B&S 675 Series engine. The problem is that engine will not start without holding choke shut manually and then working throttle by hand. I am sure there is a spring or rod missing on carb. but not sure what or where it goes since I didn't see it before. He loaned it to someone and it came back broke. The model of the engine is 126M02-0432-F1. Here are a couple of pics of carb. hopefully someone can help.