1959 Johnson 35 HP does anyone know what this hole is?

[bob844]

Finished sealing up this thing yesterday and filled up with oil today. Tried it out in a barrel and thougt everything looked good till the grey stuff started oozing out of this hole. Took out the fill screw and nothing but beatiful yellow oil ran out.
As I mentioned in another posting, I have most of another lower unit in junk parts and examining the other unit told me nothing because it's all plugged up with crud. Anyone know if I have to take this apart again? Thanks for past and future help.

 

[jasper60103]

Re: 1959 Johnson 35 HP does anyone know what this hole is?

That's the drain hole for unburnt fuel. This is normal for 2 strokes.

 

[1946Zephyr]

Re: 1959 Johnson 35 HP does anyone know what this hole is?

If your lower unit oil is nice and yellow, versus milk shake white, then you're in good shape. I would however make sure that those drain holes keep completely clear at all times. They are notorious for plugging up, because they are a bit small. If they plug up and water sits in there over the winter months, it will freeze and risk popping open your lower unit housing. I just blast it with a hose.

 

[Mas]

Re: 1959 Johnson 35 HP does anyone know what this hole is?

Yep...I had to carefully drill mine to clear it. Extra water must be able to get out of the exhaust housing.

Mas

 

[samo_ott]

Re: 1959 Johnson 35 HP does anyone know what this hole is?

It's normal goo coming out a normal machined drain hole. Go fishing!