Thank you very much for your reply. I will do that as I am pulling the boat out today. Other people told me to make sure the knocking is located first and not on the lower part of the outboard because it could be the lower unit drive shaft support bushing. I will post my findings.
Engine was winterized went fishing 4 times used 25 gallons of fuel everything was running fine. We were fishing and than we noticed a low knocking noise so we headed back to the slip which was about 15 minutes away at 20mph and when we got back the noise was louder. We heard the knocking all...