If that's the 2 cylinder 40, I'd start it at 2 turns out from seated. Adjust
it while trolling. Screw it IN slowly to go leaner till it starts sneezing.
then back it out to where it stops sneezing. THEN back it out 1/2 turn.

That'll be real close - hole shot tells the rest.

-W

"Jim" wrote in message
...

Just got a Merc 40 with Thunderbolt ignition. Serial number
is 6054081. Anyone know what year this motor is?


Thanks,
Jim

PS: I know it didn't run last year and someone mucked with the
carb. Any idea what initial settings should be for the needle(s)?