Lloyd Sumpter wrote:

Well, mine's a BIT smallier: a 2005 9.9hp 40-stroke. I've had it in to two
different dealers four times, to fix some fairly simple but annoying
problems:
1. it doesn't start when cold "on idle" (ie the way it says in the manual)
2. it doesn't idle when cold
3. it vibrates a lot, esp. when in gear in idle (ie WAY more than the old
Johnson Seahorse it replaced)
4. There's a big "lag" as I throttle up out of idle.

Basically, I've been told "that's the way they're supposed to run" and I'm
SOL on getting it fixed. HOWEVER, I was also told by the mechanics that
the Solution to most of the problems is the Idle Mixture, which they're
NOT ALLOWED BY LAW TO CHANGE!

There was a little metal cap epoxied over the idle mixture screw on my
Honda that the shop had no trouble removing with a bit of heat.
Apparently Big Brother hadn't gotten to them yet.

Have they determined that your choke is working right?

Is the idle speed correct?

good luck,
-rick-