Marine: Boating, Sailing, PWC, GPS and Navigation - Water in lower unit

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feisty
12-24-04, 02:57 PM
I have a 25 HP Johnson that keeps getting water in the lower unit, however there is no apparent leak of lubricant. Any ideas where the water is coming from?

Ed Imeduc
12-24-04, 03:00 PM
From the past Id bet on the shaft seal to the prop All the time.

ED ;)
feisty
12-24-04, 03:03 PM
[QUOTE=Ed Imeduc]From the past Id bet on the shaft seal to the prop All the time.

ED ;)[/QUOTE

Thanks, Wouldn't I be leaking some lubricant from the seal?

Ed Imeduc
12-24-04, 04:23 PM
Dont know why but it dont You might want to check the prop shaft also Fish line gets in on it and can cut down in the shaft sometimes also


ED :coffee:
feisty
12-24-04, 06:12 PM
Thanks I'll check it. I have usually found fishing line in the ones I've had to replace
Leon Phelps
12-26-04, 05:55 PM
As we know, seals can leak from both pressure and from vacuum. Chances are, when warm, the seals work fine under pressure. After cooling, vacuum is created, and then water is sucked in the seal. This is why no oil is seen on the water around the outboard.

If you have anything close to a 1970 Johnson, e-mail me and I can send a 20 hp Johnson manual for you to look at. Most are similar, for you to compare and use for reference.