On May 31, 10:45*am, "SteveB" wrote:
"D K" wrote in message

...

SteveB wrote:
Took my boat out today. *It ran fine at first, then has symptoms of fuel
starvation at high speeds, slowing to a crawl, and then hard to start and
keep running. *Then it runs fine, starts fine, idles fine, high speed
fine. Then the other end again. *I'm going to change the fuel filter on
the motor and see if that does it. *After that, I guess it just has to go
to the shop. '89 Merc 4 cyl. 40 2 stroke.

Steve

80% of the time, the carb needs to be thoroughly cleaned when you have
symptoms like that.

Is that a thing that a decent DIYer can do?

Steve

Yes, they're pretty simple. Get a manual for your engine and have at
it.