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Oil leak I have a model 289707-0154-01 12.5 hp engine that is leaking oil from the bottom of the engine. looks as if it is running down the crankshaft.

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You need to replace the lower oil seal -

Posted on Oct 21, 2008


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Engine seal is the first place to look, these engines were notorious for base gasket leaks caused by bolts loosening.

Posted on Apr 20, 2010

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POULAN WITH TECUMSE MODEL 961980025 LEAKING OIL FROM TOP OF MOTOR.HAD IN WHEN UNDER WAR. AND NOTHING DONE. OIL RUNS DOWN TO BELT AND DRIVE PLATE AREA AND CAUSING SLIPP IN DRIVE WHEELS. IS THIS COMMON


1. Exactly where is the area the oil is coming from? Could be blown head gasket, crack in the block, or loose oil plug.

2.When does it leak? running or when off

3. Verify!!! oil level in engine. If overfilled at all, excess will blow out the valve cover rubber vent breather tube (under carb) when running.
This makes a mess but is the design to prevent major engine damage if accidentally overfilled.
43.Oil on friction plate pretty much prevents movement...clean with brake cleaner (or gas on a rag).

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Kokler courage 20 on cub cadet was running locked up had plenty of oil but oil ran out bottom of engine


Check the motor mount bolts they are probably loose and vibration and torque cracked the crank case and the oil leaked out of engine while it was running locking engine.

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1 Answer

My toro 6.5 hp leaks oil at the bottom of the engine runs ok


If this is the vertical shaft motor, there is a seal at the bottom where the crank shaft exits the case. On the vertical motors I've taken apart, the bottom of the case is like an oil pan. It is possible that you could have a crack in the case. But also check the oil drain plug to be tight, but not too tight. This could also cause a crack in the motor case.

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Oil leak on deck of Lawn Mower


Because you mentioned the smoke and hard to start it could be that the engine is flooding or overfilled. Check for fuel in the crankcase. Be sure cranckcase is not overfilled. An engine with too much oil will force excess oil out somewhere. If the mower has been turned on its side lately it could have put oil in places that it should not be and its trying to burn off this oil. Be sure your air filter is not saturated with oil or fuel.
If all that checks out we will look for oil leaks.
As far as oil leaks go the three most likely places for your engine to leak are from the head gasket, dipstick tube seal, or the sump gasket.
Check for proper torque on the head bolts ( 125 inch pounds). Headbolts can come loose over time. After that check that the seal at the bottom of the dipstick tube is in good shape and a tight fit. This seal usually leaks when the engine is running because at rest the oil level is just below this seal. Lastly, if everything else checks out then the sump gasket is leaking. To replace the sump gasket drain oil from motor and remove air filter. remove blade and self propel belt. remove engine stop cable. remove the three motor mount bolts from under deck and remove motor. place on work bench upside down. some fuel may run out carb or tank cap. remove sump bolts from bottom of motor and remove sump. Do not remove governor gear or cam gear from cranckcase. At this time it will be obvious where the gasket has failed. Remove old gasket. It may need to be scraped off. Take care to keep material from going into crankcase and clean out any that does fall in. install new gasket and torque sump to proper specs and reassemble.

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1 Answer

Kohler engine oil leak


Could have blown a seal however before checking for that I would check the drain plug and filter seating if you changed the filter. Make sure the drain plug is not cross threaded. You can run a little low but should never over fill. Hope this will help. Most of the time if over filled you will get some smoke as well.

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1 Answer

HOW DO I FIX THE OIL LEAK COMING FROM UNDER MY GXV 120 LAWN MOWER ENGINE?


Depends where it is leaking from, wash it off to see where it is coming from, it may well be the bottom crankcase seal, once the blade and carrier are removed you should gain acess to this, if it is leaking you will need to remove the seal and replace.

Oct 07, 2012 | Garden

1 Answer

Have cub cadet 18m , leaked all oil within 10 mins


you will need to clean it off and run it while looking for the leak there is a seal on the bottom of the engine take a look at that might be easier to see the leak if you can drop the deck off

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1 Answer

I have a gas Yard Machine Lawn Mower by Briggs and Stratton. I cannot keep it running and it is loosing oil. What do I need to do?


May be time for a tune up. Replace spark plug, air filter, change oil and sharpen blade. You may have some water in your gas. I would check to see where it is leaking oil. It may be the oil seal on the pto(bottom) side of the engine leaking and needs to be replaced.

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2 Answers

Honda Self-Propelled Lawn Mower leaking oil?


It is toast you fried the crank/connecting rod, by running it low on oil.
Its hard to say what caused the oil leak, but now it is ruined.

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