Verify that your idle rpms in gear in the water is between 600 and 800 rpms.
It may be just that your idle is a little low.


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Tony
my boats and cars at http://t.thomas.home.mchsi.com

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"DS" wrote in message
t.ca...
I have a Merc I/O, probably about 10 years old. It has been tuned up and
has
been running fine. But it tends to stall at idle speed and sometimes will
stall when you throttle back after running at speed.
Carburetor problem? Dirt in the gas? Electrical? Something simple or
should
I haul it to the service guy?
Thanks.


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