"Hello Bruce - the XR6's w
"Hello Bruce - the XR6's which are parts of Merc's "Black Max" series have what's called an "enrichment system" in place of a traditional choke.
The system kinda "leaks" fuel down to the intakes via small tubes which are controlled by a little solenoid valve.
To operate it you turn the ignition key to ON (but not all the way to start) and then push the key in and hold for a few seconds. This sends an electric current to the solenoid, forcing it open and then gravity takes over.
Depending how well it works on your particular motor you may have to keep the key depressed for 5-10 seconds on a cold start.
Since you are hearing the click (solenoid activating), at least you know it's getting power and is (probably) opening - however, you still could have a clogged line to or from the solenoid itself.
So I would start with depressing the key for various lengths of time (start at about 5 seconds and work up from there), however, if you get much past 10 without any noticable improvement I would investigate the little fuel lines on the enrichment system..."
A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)