Found the choke was not engaging because the choke/throttle cable was not adjusted correctly just like said in previous post. Took 60 seconds to adjust it and it fired right up once the choke engaged!
Same problem. YTA22V46 delivered and would not start initially. Almost drained the battery. Then suddenly fired up after waiting a minute or two. Went ahead and mowed for an hour and worked great starting when hot. Tried the next day and nothing. Finally drained the battery. I'll look at the choke/throttle tomorrow and if that doesn't work...back to Lowes. I'll leave an update in 24 hours.