I am back into boating and bought a 2000 Maxum 2300sc with 7.4 MPI and Bravo 3 sterndrive. I have never had or been around a Bravo three. When spinning the the props by hand, I can hear a whirring noise similar to a bearing that is too tight. No play in bearings and it is smooth. Cannot see any metal in the lube oil, but I will have it analized to be sure. I can hear it in the water too, muted a bit because it is under water. I do have a slight vibration under way, but one prop is slightly dinged which I think is causing that ( props will be repaired soon). Is this whirring noise just normal for the Bravo three outdrive???? What synthetic gear oil do you recommend for the outdrive, I suspect the factory oil is not synthetic and I want to change it. Previous owner had it 6 years with no issues.
Do I have a lower unit issue?.
- Thread starter another Todd
- Start date
dinged prop is most likely your vibration culprit
Bravo III do indeed whirr a bit, if it spins free by hand with no grit, catching, wobble, or other nasty things, I would not be worried
whatever marine approved gear oil you have available - more important to change it often
Bravo III do indeed whirr a bit, if it spins free by hand with no grit, catching, wobble, or other nasty things, I would not be worried
whatever marine approved gear oil you have available - more important to change it often
Perfect, thank you.
you will hear and feel gear noise in a bravo three when turning a prop. its shouldn't feel like gravel however.
A bent prop will cause more vibration than you think and a bent prop shaft is worse -make sure your prop-shaft isnt bent which is always a possibly on prop strike.
Have you checked the mags?
A bent prop will cause more vibration than you think and a bent prop shaft is worse -make sure your prop-shaft isnt bent which is always a possibly on prop strike.
Have you checked the mags?
Use Mercury snot green premium gear oil.
For sure. Quiet, smooth, and planes effortlessly. Wide and stable boat too. So far, I love it.
