Napa has some of them and most power saw repair shops have every posible bulb. You want to take it out as a pattern, to get the right one.
Just a thought!
Thanks John, I have a couple of different vendors looking for a bulbl to match up. It's about 7/8ths in diameter, about the same in depth, and uses a retaining band that fits like a wedding band. The original split at the retaining band but I carefully cut that part back and slipped it back on. It is now too shallow to use as a primer but the seal is good and the pump will once again pull fuel to run.
Homelite is another brand John Deere bought up to rebrand as their own and closed them down.