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92 Posts
Here's another question about lower unit leaks. I did a search of this forum and it didn't really answer my question. I'm guessing I may have a bad seal on the prop shaft? I know very little about outboards, but I do have a manual on the way. Unfortunately, it didn't make it in todays mail. Anyways, here is the description and a few pictures.
Background: Motor is a 1993 Evinrude 30hp tiller, electric start. I bought this motor on a jon boat in Feb, ran it briefly (in barrel) before purchase, didn't notice anything, but it was dark out. I've had it running at home once (in barrel) and didn't notice anything.
Today was maintenance day and part of that was changing the lower unit lube. Lube looked very good, almost new, but had the (normal?) smell I've read about. I also changed the screw seals. After changing the lube, I ran the engine a bit (with bunny ears) It took a few good cranks to get it running (electric start), but ran fine once it was going. Then I noticed the milky froth coming out from the prop area. Putting it on my fingers, it was very frothy but only had a slightly oily feel to it. It was much lighter/frothier than I expected by looking at it. I should probably add that there have been no visible leaks on the ground under where the motor is stored (Boat/motor stored in garage)
For all I know, this could just be crap coming from the exhaust but with my luck, I'll assume worst case until it's proven otherwise! If it is a leak in the lower unit, I'd have to assume that the old owner pulled one over on me and tried to hide this (nearly new looking lube):angry:. I hate to think that, but I know how some people are. Any advice on what needs to be done, special tools involved, and parts needed would be greatly appreciated. Here are the pictures. Thanks.
http://farm3.static.flickr.com/2326/2443109333_1ec3ca1013_b.jpg
http://farm4.static.flickr.com/3090/2443935082_1907d972bc_o.jpg
Background: Motor is a 1993 Evinrude 30hp tiller, electric start. I bought this motor on a jon boat in Feb, ran it briefly (in barrel) before purchase, didn't notice anything, but it was dark out. I've had it running at home once (in barrel) and didn't notice anything.
Today was maintenance day and part of that was changing the lower unit lube. Lube looked very good, almost new, but had the (normal?) smell I've read about. I also changed the screw seals. After changing the lube, I ran the engine a bit (with bunny ears) It took a few good cranks to get it running (electric start), but ran fine once it was going. Then I noticed the milky froth coming out from the prop area. Putting it on my fingers, it was very frothy but only had a slightly oily feel to it. It was much lighter/frothier than I expected by looking at it. I should probably add that there have been no visible leaks on the ground under where the motor is stored (Boat/motor stored in garage)
For all I know, this could just be crap coming from the exhaust but with my luck, I'll assume worst case until it's proven otherwise! If it is a leak in the lower unit, I'd have to assume that the old owner pulled one over on me and tried to hide this (nearly new looking lube):angry:. I hate to think that, but I know how some people are. Any advice on what needs to be done, special tools involved, and parts needed would be greatly appreciated. Here are the pictures. Thanks.
http://farm3.static.flickr.com/2326/2443109333_1ec3ca1013_b.jpg
http://farm4.static.flickr.com/3090/2443935082_1907d972bc_o.jpg