I have a 2009 model 2hp 2-stroke Yamaha.
The problems I've had with it are:
1. Letting it go for a dive.
I stripped it and rebuilt it (bearings and seals) myself - there's not much to them.
2. Starting problems on very cold days - because dumb-bum here didn't give it full choke. Now starts first pull no matter how cold.
So you can see it survives the treatment a clod like me can dish out. It weighs just under 10kg and is very easy to carry and lift from dinghy to yacht and back - at 62 I couldn't do this with a heavier motor. Of course after the dive, it is firmly tethered during any transfer. It lies on its side in the station wagon and doesn't leak petrol and cause a pong.
It pushes me around in a 2.4m long FG tender and a 2.4m inflatable - flat out with just me in it, the tender will get up to (I think) around 5 knots, and the blow-up a bit faster.
I got it through eBay for a great price ($250 plus $50 freight) and I love it.
Graeme