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I hit a steel water cover and my Toro push mower abruptly stopped. I was unable to re-start. I noticed a fair amount of oil on the underside of the cutting deck and blade. I added some oil and was able to re-start (very noisy) for about 3 seconds and it conked out again. Any Thoughts?

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When you hit a solid object with those fast moving mower blades, and you got lucky, it may have only sheared a key in the flywheel. The key is made of soft metal for just this reason...so it will fail before damage is done to the flywheel or crankshaft. Hitting a solid object can bend a crankshaft and cause major problems.
First, the blade and the crankshaft should rotate together. If you feel slippage, the key has broken and will require replacement.
You can possibly avoid removing the flywheel to inspect the key by removing the spark plug and rotating the crankshaft so the piston is at Top Dead Center and noticing the location of the magnet on the flywheel, relative to the position of the pole pieces on the magneto. The magnet should be very close to the magneto poles at TDC.
Hope this helps you and best wishes.

Posted on Jul 27, 2009

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Sound like you may have broke the crank casing. Any damage done to the blade?

Posted on Jul 27, 2009

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