propeller seal removal

[Jay Jay 500]

I have a Johnson 25hp and I have removed the propeller and I want to replace the oil seals but I am having difficulty trying to remove the casing, I have removed the two bolts and I attached two long eye bolts to through the two threaded holes on the cross members and attached a bearing puller but the pressure started to straighten one of the eye bolts, has anyone any advice please.

 

[racerone]

Model # or picture required of the lower unit.

 

[Jay Jay 500]

J25ELCOC I will post photos in the morning

 

[Jay Jay 500]

Sorry I should have said it's a 1985 model

 

[oldboat1]

If the issue is apparent leaking, smell the stuff to see if it's gas or gear oil. Gear oil has a sulphur smell. Don't fix it if it ain't broke.

 

[Jay Jay 500]

If the issue is apparent leaking, smell the stuff to see if it's gas or gear oil. Gear oil has a sulphur smell. Don't fix it if it ain't broke.

This motor seemed fine as I have only run it a couple of times in water out my back garden but the last time my noticed when we took the bin away a sludge coming from the propeller, so I assume one or more of the oil seals are gone, am I right or can you think of anything else??, the advice is much appreciated.

 

[racerone]

Your best plan is too pressure test the lower unit seals.-----Test running a motor in a bucket often results in sludge leaking around the prop.

 

[Jay Jay 500]

I will try it in the morning, and thank you very much

 

[Crosbyman]

(735) Pressure testing an outboard gearbox - YouTube

I purchased that red pump on amazon and it worked fine testing my ETEC 75hp gearcase. The $12 oil bottle pump kit provided the OMC adapter I needed . you can test pressure and vacum with it.

 

[F_R]

This motor seemed fine as I have only run it a couple of times in water out my back garden but the last time my noticed when we took the bin away a sludge coming from the propeller, so I assume one or more of the oil seals are gone, am I right or can you think of anything else??, the advice is much appreciated.

99% chance you are looking at the oil that you put in the gas, which has gone through the engine and done it's job, then mixed with expelled cooling water and gone out with the thru-hub exhaust. Absolutely normal, and does NOT indicate a seal leak. Stop worrying and don't be trying to fix something that is not broken. Get it out of that barrel and on a boat on the lake where it was built to be run and it will be much cleaner.

 

[Jay Jay 500]

99% chance you are looking at the oil that you put in the gas, which has gone through the engine and done it's job, then mixed with expelled cooling water and gone out with the thru-hub exhaust. Absolutely normal, and does NOT indicate a seal leak. Stop worrying and don't be trying to fix something that is not broken. Get it out of that barrel and on a boat on the lake where it was built to be run and it will be much cleaner.

Thanks very much, I am quite new to this as you can probably imagine and when you see something coming out from around this area you tend to think something's wrong. Cheers

 

[Vic.S]

Thanks very much, I am quite new to this as you can probably imagine and when you see something coming out from around this area you tend to think something's wrong. Cheers

Sorry I should have suggested you read this article back home on YBW

Oil leaking around lower unit, by IWombat Verified

Oil leaking around the lower unit So, you have oil leaking out of, or around the lower unit on your two-stroke outboard and you?re wondering what to make of it all. There?s only a few possibilities. Fortunately for you, most of the time it?s pretty benign. Reason #1 - Unburned 2-stroke oil...

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