Merc 9.9 0R15371 Carbutetor Adjustment

[JDusza]

Hi.
This engine restarts and runs well at high speed. It stalls at low speed without constant choke. So, ...
How do you adjust low speed mixture on this engine's carburetor?
Hmmmm?
Thanks,
J

 

[MH Hawker]

you clean the carb to fix that, the idle circuit is gummed up, you stand a chance of cleaning it out with sea foam

 

[JDusza]

Thank you. Got SeaFoam in there. Probable rebuild. I've been through it twice now with limited success. Thought there was a super-secret adjusting screw.
Thank you.
J

 

[JDusza]

Mike,
I've got a jet that will let only one strand of horse hair through. It is the one that runs about 12 mm into the venture at the choke butterfly. This sounds like a blockage. Do you happen to know the proper diameter? I get up to about ten thou and i can't go through.
Thanks,
J