This is my first time in any type of forum, I see some really great info and sharing......so i hope that I too can be of some use and get some help myself.

I have a 2001 Tracker Pro Team 165, I was fishing this weekend and all of the sudden i heard this annoying buzzer or alarm going off under the dash area.  I have heard similiar sounds in farm tractors when they overheat, so i checked the water stream coming out of the MERC 50hp and it was a little slow but good when i got in the gas. I shut the boat down for about an hour and as soon as i turn the key on, the noise is still there.  It has been sitting overnight and still makes the noise as soon asi turn the key, so I know its not still too hot.. I have only had this boat for about two years and the guy that i got it from had no paperwork or manuals for me to use for troubleshooting.   Thanks in advance for even looking at this NEWBIES post!

is the motor oil injected? If so the oil level might be low. on my motor there are two alarm, overheat and low oil.

FYI: just cause there is water coming out doesn't mean its cooling> My suzuki would overheat when all kind of water was coming out. the thermo was stuck open and the water was flowing to fast to cool the motor. In reality it was pumping too much water.

Welcome to the forums, We are glad to have you here.

I am pretty sure you are low on oil. When this buzzer goes off it means to get you butt back the your truck and get some oil in it. The oil mixes with the gas in you two stroke engine. If you don't have any oil it is a bad thing. I keep two extra quarts of two stroke oil in my boat just for this reason.  Is there an oil fill cap on the motor or is in in the back hatch near the gas tank?

I believe that it is oil injected. the oil tank is mounted on the front of the motor and there is a sight gauge to see how full the tank is. The sight gauge shows that im half full of oil, I will remove the filler cap and look down in there to verify. The fill cap is on the motor.

fill it full of oil and see if the bizzing goes away

Thanks for the great inputs. You all led me in the right direction. I filled it up with oil and the buzzing stayed, I then emptied the oil resevoir and found that the magnetic sensor float is not wanting to float any longer.  I removed the probe and the buzzing went away, I installed the probe and the buzzing returned. I slowly added oil and the buzzing stopped, but as i added more oil the buzzing came back. I assume that the float is too saturated to float in the heavy oil. The float post is plastic melted to the resevoir....so i dont know if i need a new tank or if someone can repair the float?  Thanks again.  

the float might get stuck, but it can't be to saturated. It should float. You can discontect the sensor, just remember to fill the oil tank before every trip so you don't run out of oil.

I know that every time I fill the gas tank , I fill the oil tank and rearly ever hear the oil buzzer come on

you cant just replace the float you need to replace the whole oil tank it's a common problem

sounds like an oil alarm to me as well. I have an older 175...my father in law has a 2001 185...we have both had to replace our oil level sensors in the tanks.

you cant just replace the float you need to replace the whole oil tank it's a common problem

My float is part of the tank cap assembly...so that was all the needed replacing. I do not know if my father in law had his whole tank replaced or not.

Just my luck, the float is attached to the bottom of the tank. Looks like ill be in the market for a new tank. I have the sensor un hooked for now, so i can fish in peace.

Thanks again for the help.

Art