When we purchased our used 2000 Four Winds in 2010, we had intermittent start problems. It was odd - try to start it, and it would just crank. Turn it off and back on/start, it would fire right up.
I suspected the issue might be the fuel pump but as I had a workaround, I didn't do anything about it.
Then once, and only once, it died on us while we were on the road. Fortunately we were on a local road traveling at about 20 mph, so we coasted to a stop, looked at each other, then tried to start it. Fired right up.
Then during my winter monthlies in January 2013, it failed to start. No amount of off/on/crank/off/on/crank would help. First check: when first turning it on, does the pump run for a couple-three seconds?
Your friend's may be like mine was - it had a swollen nylon pump gear, and it would catch occasionally. Apparently the ethanol finally swelled it to the point where it wouldn't rotate at all.
Full story here:
Fuel pump replacmentAnd
The pump tear-down, complete with pics.
Hope that helps!