Its a nice one. Its called a Goose or Wild Goose. The engine looks to be from a snow blower or some yard equipment. No big deal, especially if you change the blower housing, carb and exhaust. No big deal but it hurts the value a bit as is and a nice exhaust is at least $100 for a 4 or 5 HP engine. Is the primer functional? Hard to place a dollar value, it depends where you live. They get top dollar in the Detroit area. Send a private message to me and I’ll give you a bit more info that might help