1963 Johnson 35hp

[gholmesjr]

So I get a text from a friend who just bought a boat. We did all the initial testing and everything, motor works great, however is wife said that it has dripped oil on the garage floor. In my experience 2-stroke motors will "leak" a little after being ran in the water. However, I am curious what some of you here might think this is as the spot is larger than what I would think some residual oil from the exhaust and water would be. He is out of town so his wife sent me two pictures of the motor and what it is leaking. She tried to get the spot where it seems to be leaking in the picture. The oil does not appear to be happening high on the motor, so it tells me that perhaps the lower seal is busted? Let me know what you think.

Thanks,

J.T.

 

[racerone]

They did not market a 35 hp in 1963----Perhaps it is a 1959 model.------No time for guess work here.----Have the lower unit pressure tested to determine if there is a leak.

 

[gholmesjr]

I apologize, the motor is a 1960 35hp according to my buddy.

 

[racerone]

That 35 hp motor was only marketed in 1959 !---------That oil leakage is normal for a 2 stroke motor.----------If oil seals in the lower unit are original they may be worn.--------The motor may require a seal kit for peace of mind.----------A pressure test of the lower unit may be a good idea.

 

[pro-crastinator]

Oil spot does not seem bad
Where it is coming from matters.
Does it smell like gear lube? - Or is it just unburnt exhaust oil? Has the gear lube been checked/drained/replaced recently?
A pressure test on the lower unit is never a bad idea.
need more data.

 

[Chinewalker]

The dribble on the side of the lower unit, coming from up near the seem, appears to be unburned fuel/oil mix. It can be reduced by getting the motor in proper tune so that it is running as cleanly as possible - keeping in mind that it still won't be terribly clean. Also, prolonged idling may produce more residue than a quick blast around the bay prior to pulling the boat out.