mercury 9.9 pulling while at speed

scottrn

Cadet
Joined
Jun 26, 2008
Messages
21
I just put a mercury 9.9 (mid 90's, has the shifter integrated with the throttle) pushes my 12' starcraft like a rocket, even porpoised at wide open! :eek:
Anyway, it pulls to the left at speed only, as if it wants to turn right. I see a screw with something missing under the cavitation plate, just behind the water inlet port. Does this little motor have a trim tab?
One more while I got you.... the tell tale acts like theres a thermostat in there, even after changing impeller. Does it?
Thanks guys,
Scott
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: mercury 9.9 pulling while at speed

No Trim tab on these engines......... But there is a thermostat... and the telltale outlet is the thermostat outlet, so what you're seeing is right....
 
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