It is the same with my Poulan. First start often needs starter. It looks like there is a long way for fuel from the carb to to the glow plug[

]. One it is shut off after running the start takes no more than few flips. I noticed sometimes when throttle position is on idle it doesn't run but bounces forth and back - it sounds like it's running but it is not. There is 50-50 chance it starts forward, but of course because of Murphy's law, it starts 90% backward