I own a C51,Three C52, C7, C9 and not one of those saws have a flat pull starter cover! Mine are all Fairbanks/Morse pull starters. I just watched a video on Leons chainsaw parts and repair with one of those he was adding to his collection and I would suggest you contact him and you will get all the details from him, he is a homelite guru! And I always watch his videos if im looking for information about a homelite chainsaw. The information is always spot on and he does a great job of explaining what you want to know.