high pitch squeeling

[fordgta]

just bought a 1986 baretta 120 hp in /out mercruiser. First couple times out went fine. recentlly ive been hearing this high pitch squeel. this happens most of the time at idle speed when i tilt the motor up or down. when it squeels usually i just put it in nuetral and then back into forward. Whats causing this. any suggestion on where to start? <br /><br />another ? i have is the boat seems to hesitate from idle to wot. its like a have to finess the throttle back and forth in the midrange throttle before it will go wide open...possible throttle cable?.....keep in mind ive never owned a boat before and i dont have a manual. ne 1 know where i could find one, or download one for this boat or motor? thanks in advance

 

[MainstreetUSA1]

Re: high pitch squeeling

I think you can order factory manuals at www.mercurypartsexpress.com Get one if you plan to repair or maintain your sterndrive. Everyone else on this board will tell you to.<br /><br />As for the squealing, you probablly have a slipping belt. You can adjust the tension on it to stop the squealing, but most likely you are due for a replacement belt. Over time the pulley surfaces can become rusty and will eat up a belt in short order. <br /><br />You can get a replacement belt at a auto parts store, just take yours in and they'll match up a replacement.<br /><br />Also, if your pulleys are rusty, clean them with a wire brush and/or high grit sandpaper and repaint them.