I recently purchased a new Tohatsu 50HP TLDI. The motor is on a 17' aluminum jon boat, and it has an aluminum prop. The problem is when I put the motor in forward or reverse it sometimes makes a clanking noise at idle speed. When I accelerate the noise goes away. It seems to have something to do with the prop, because when I take the prop off and run it with muffs, it doesn't make this noise. I have only had this motor a little over a month and this noise has occurred periodically since the first time I had the boat on the water. The only thing I have done to this motor is change the gear oil after the 10hr break in period as instructed in the owners manual. Anyway, this is the first Tohatsu I have owned, and I just wanted to see if anyone has any experience with this. Also, is this normal or should I take the motor in to the shop to checked out?
