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2001 Tohatsu 15hp 4 stroke

finnbardalton

New member
I've noticed a little engi

I've noticed a little engine oil that is draining out through my prop exhaust of my 2001 Tohatsu 15 4-stroke while my boat is in my garage. Its not enough to draw much concern because my oil level is fine but it is a tablespoon or so. It makes a mess though when the boat is sitting at the dock and creates a slick. What causing it to leak?
 
"While no guru, I had the same

"While no guru, I had the same thing happen on my Tohatsu 18hp 4 stroke. I drained the oil, and made sure I put a little less than the 1000ml back in, and have not experienced the problem since. Obviously, when I changed the oil last year, I put too much in. Hopefully the guru can verify that leaking oil out the prop hub is caused by having too much oil in the engine."
 
"It could be...But, usually it

"It could be...But, usually it's from turning the engine the wrong way during transport or getting the lower unit higher than the power head."
 
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