OIL FROM PROP

[tolmaz]

I own twin yamaha 150 saltwater series. I fogged both motors yesterday and noticed this morning there was oil dripping out of the prop. I thought maybe this was the fogging fluid but the other motor did not have any. I went to drain the lower unit gear oil and found there was not any in there. Just recently bought the boat and fished a few times with no trouble. motor ran fine while fogging it. any ideas ?

 

[bossee]

Re: OIL FROM PROP

tolmaz wrote: <br />I went to drain the lower unit gear oil and found there was not any in there<br /><br />Are You saying that the lower unit, gearcase, on both outboards has no oil in them?<br />If Yes, I would ask the seller what the he... this is suppose to mean.<br /><br />With outboard in tilted position so oil plug is in lowest point, did you open both the lower oil plug and upper airvent/oil level plug when draining the gearcase oil?<br />If You only open the lower plug no oil will come out. I do not know if you know this but You fill, with outboard in vertical position, from lower oil plug until it come out oil in upper airvent/oil level plug - then it is full and You screw in airvent/oil level plug and then lower oil plug (new gaskets on the plugs preferably).<br />Check in Your Yamaha Owner's Manual for this procedure.<br /><br />I suggest you at least have a Yamaha outboard service center have a look at this problem, if it is a problem.<br /><br />/Bo

 

[tolmaz]

Re: OIL FROM PROP

Hey Bo, Thanks for getting back to me. did have the outboard in a vertical position. both upper and lower plugs were out. no oil came out. jst a very small amount of water. I had flushed the motors the day before.also fogged them. I drained the port motor fine. the starboard is the one with the oil dripping fom the prop. I noticed this today. a small puddle was under the prop

 

[rodbolt]

Re: OIL FROM PROP

hello<br /> did you pull the props and service the shaft splines and inspect the bearing carrier assy with a flashlight? there are seals at the propshaft that can leak and an oring at the fwd end of the bearing carrir that will leak sometimes.<br /> if No oil and some water its time to remove the unit and pull the propshaft and drive shaft housings to inspect for gear/bearing damage and then reseal.<br /> good luck and keep posting

 

[bossee]

Re: OIL FROM PROP

Hi again,<br /><br />I'm not aware of more than two ways oil can leak out of the gearcase:<br />1) lower oil plug not tight.<br />2) bearing housing with O-ring(s) etc, in front of prop, leaking.<br /><br />I would check 2) at a Yamaha outboard service center and have them look at this problem and maybe make a pressure/vacuum test.

 

[tolmaz]

Re: OIL FROM PROP

thanks for the help.. I will pull the props> Just hoping no major damage