Yamaha Prop Shaft Seal
 

Hello everyone its been a while. Ive been busting my hump getting my 248 sportsman ready and today I just noticed there is some gear lube leaking from my prop shaft. Is this something my marina can do or is this a dealer only repair? Any guess on the cost? Its a 96 250 hp. Hope to see all the NJ crew at the shoal if i ever get this thing in the water.

Usually the bearing carrier has to be removed to replace those seals. I have come up with a cheat though. Drill two small holes in the metal part of the seal, 180 degrees apart. be careful not to scratch the shaft. run a small screw in each hole. take two pairs of pliers and grab each screw and pull the seal out. Repeat this process with the second seal. to install the new seals get a piece of pipe the same diameter as the seal and a little longer than the propshaft and drive them in one at a time until they seat.

Thats sound good Pete. Ive got nothing to lose by trying.

You sure it's not just residual oil in the exhaust? Check the oil level in the gearcase and/or if your getting water in there first!

Great advice there. Brielly, if you are running a 2 stroke it is normal for unburned 2 stroke oil to come out there.

Capt. Pete, are you saying the "cheat" allows you to leave the bearing carrier in place? I'm trying to figure this out on my 9.9 evinrude. If I take it to the shop I'm looking at likely $200 + whereas if I DIY probably about $20 - $25 for the seals.

Unfortunately there's no mistaking the smell of gear oil. I'm going to order up the new seals and give it a shot.

yes the carrier stays in place. I don't know if there will be enough room on the seals on a 9.9 to run screws into. I can't stress enough, you need to be very careful not to scratch the propshaft with the screw or drill. I have had great success doing it this way. It saves a lot of time and money.

Let me know how this turns out, with lotsa picthurs please!

I've got a seal puller(Kent Moore) that I've ground on with a grinder that I can hammer into a prop shaft seal and pullout. Sometimes it takes a second attempt, but it usually works

Unfortunately the bearing was bad as well so the carrier had to come out. Honestly looking at it there wasn't much room to get a drill and screw into that area anyway.