I think on most efi machines, if the battery isn't fully charged, they won't start at all. That's why most manufacturers have done away with backup pullstart. It wouldn't help anyway. On the ES Honda quads, I found out the hard way to never shut it off in gear. I left the fuel petcock on the off position on my Rancher 350 ES once in 3rd gear and it died on me. It ran just long enough to run the fuel out of the carb. I had to turn the key on and off several times to get it shift back to neutral so I could restart it. I thought I was going to run the battery down doing so.