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1990 mercury 150 outboard motor

When I push the lever forward it does not make the boat go faster but while in nuteral i can make the idle go faster but not while it is in gear. also the buzer just started going off with short blasts. I know that that means oil though.

Posted by richard_s768 on


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Sound like the throttle control (lever) is at fault not engaging the throttle in FWD position, but ok when in neutral, check the release button insure it pops out to lock the throttle...hope this helps...GL

Posted on Jul 06, 2009


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Seems like your are describing a outboard motor. If so, the Boat section of Fixya may have more experts that you need. You would want to avoid turning any screws on the carburetor body. The externals on the linkage have some adjustments like throttle stops.

The linkage on boat shift mechanisms are tempermental. They usually combine 2 functions on 1 control lever. They are synchronized that when the transmission shifts from neutral to forward and neutral to reverse the idle speed is low. This keeps the gears from grinding and takes the shock out of the shifting process.

Another thing different than on a car engine is the effect of the propeller on engine rpm. You can change the "in gear"
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You may be able to view youtube videos by searching for these topics.

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Good Afternoon Ronnie Barnhouse,
Most Control Boxes Are Able To Be Switched,
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