6.5hp Toro Oil Leak

A

aldumoul

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• Aug 14, 2019 / 6.5hp Toro Oil Leak

• #1

Hi everybody! I have an oil leak and I'm not sure where it is coming from. When I add oil, it takes an hour or so and I'm back to the 'add' level on the dipstick. There is a little bit underneath the crank case/on top of the mower deck. Do you think it is coming from the breather gasket, the round disk?

 

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aldumoul

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• Aug 14, 2019 / 6.5hp Toro Oil Leak

• #2

 

Scrubcadet10

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• Aug 14, 2019 / 6.5hp Toro Oil Leak

• #3

Could be,
One question to clear it up is it leaking out while running only, or leaks when not in use? thing to do is CLEAN everything free of grime and grass that will make it easier to pinpoint.

 

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aldumoul

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• Aug 14, 2019 / 6.5hp Toro Oil Leak

• #4

I will degrease it tomorrow. It leaks when it is not running.

 

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bertsmobile1

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• Aug 15, 2019 / 6.5hp Toro Oil Leak

• #5

Judging from the baked on oil & grime on top of that engine I would be suspecting the top oil seal.

 

upupandaway

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• Aug 15, 2019 / 6.5hp Toro Oil Leak

• #6

bertsmobile1 said:

Judging from the baked on oil & grime on top of that engine I would be suspecting the top oil seal.

Click to expand...

This Tecumseh sump leak sump gasket seems pretty common as i have come accross a few of these along with (just the other day) a craftsman with the same motor and problem. If i read the SN's right, the gasket seems to blow at 9 years.

 

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aldumoul

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• Aug 15, 2019 / 6.5hp Toro Oil Leak

• #7

Is the top seal the round pc/part of the breather?

 

Scrubcadet10

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• Aug 15, 2019 / 6.5hp Toro Oil Leak

• #8

The top seal is underneath the flywheel.

 

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tadawson

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• Aug 15, 2019 / 6.5hp Toro Oil Leak

• #9

Top seal is on the crankshaft under the flywheel, bottom seal is on the crankshaft where it exits the bottom of the engine.

If I hear you right that it leaks when *NOT* running, that pretty much isolates it to just the suff below the oil level - bottom seal, case gasket, PTO shaft gasket (if it has one) etc.

 

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bertsmobile1

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• Aug 15, 2019 / 6.5hp Toro Oil Leak

• #10

tadawson said:

Top seal is on the crankshaft under the flywheel, bottom seal is on the crankshaft where it exits the bottom of the engine.

If I hear you right that it leaks when *NOT* running, that pretty much isolates it to just the suff below the oil level - bottom seal, case gasket, PTO shaft gasket (if it has one) etc.

Click to expand...

Not really.
If the top of the engine has puddles of oil on it these will make their way down the to the bottom of the engine when not in use.
You would be right if the engine was fully degreased and you inspected the engine as soon as it stops.