Pretty good but both need some help (or it's just operator error) in cold starting (sometimes warm starting after 10 minutes too). It's either pull a LOT of times to get it to start to sputter/pop with the choke on, or pull once too many times and it's flooded.
The 5100 is HARD to turn over when it's down around 10 degrees or so. I wish it had a compression release like the 7900.
One thing I haven't learned to do is tune a 2-stroke. Maybe one of these days......... (either that or go for a drive
)
I could dial in the 500cc snowmobile, but then again I found out that I had to have Pyrometers or I'd end up with aluminum on the sparkplug if the temps changed 20 degrees..........
