I know this is an old thread but just in case anyone else is considering.
I've purchased a 3.5 and have done less than an hour on it. I've had it back to the shop once and the mechanic
convinced me I'm using it wrong.
It stalls constantly, after ten minutes use, turn it off on the beach, try starting it again and it takes as many as 20 pulls to get it going. My wife can't get it going at all after a stint to the beach.
Power wise I don't think it is any better than the 2.5 Yamaha we had which was very reliable until I sunk it. And this 3.5 uses a hell of a lot of fuel
for hardly going anywhere.
When I get home, I'll be taking it back for a refund. An outboard
has to be reliable. This piece of **** is not.