Question about Tecumseh Lawn Boy Push Mowers Insight Silver Powered Series - Sens - A - Speed Walk Behind Mower - 10685

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Lawn Mower will not stay running then will not restart

Lawn Mower runs for a while then will not restart. I have changed the plug, air filter, replaced a gasket and 'o' ring. Cleaned the fuel line. Each time I do something it may work for a short time then quit. It is a tecumseh pull start mower. It is frustrating.

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First, you need to determine why it is not starting. If it is fuel related, or spark related. Many times a coil will stop working after it gets hot. When it does not start, pull the spark plug out, keep it connected to the coil, and touch the metal part of the plug to the frame of the mower. ( metal part only), Make sure you are not part of the circuit. Usually, a good place is on the head of the mower. Pull the start cord and see if there is a bright blue spark at the gap. If there is you are good for spark, if not, look towards a fuel issue.

Posted on Jul 14, 2014

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Make sure oil is full. If not changed this year. Drain and change with 30wt oil. 16-18 oz. Always check stick level for full. Do not over fill.Air filter and plug changed this year?

Posted on Jun 12, 2014

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I think we all understand the frustation penaone.
I noticed u didn't clean the fuel tank, water, dirt, and rust in it can give u problems. But u need to clean the lines and carb. again also. One of the kids filled my mower gas tank with driveway gravel once, and after I cleaned things out, the mower never run so good. Also your spark may be grounding out somewhere before it gets to the spark plug. Check for a bad spot in the wires from the magneto. Some of that may be behind the flywheel though.

ballping

Posted on Jul 29, 2010

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My lawn mower will not stay started


Since it starts, it doesn't sound like an electrical problem, it sounds like it runs out of air. To test this, remove the air filter, start it and see if it stays running. If so, replace the air filter.

It could also be varnish or sludge in the carb bowl. This is best serviced by a technician if you have little mechanical prowess.

After sitting for 3 years, I would at minimum do all of this before I expected it to run ok:

  1. Change the oil.
  2. Replace the air filter.
  3. Drain the fuel tank by removing the fuel line from the engine end (not the tank end).
  4. Replace the spark plug.
If the above did not work I would drop the carb bowl and clean it, then add one ounce of carb cleaner to a full tank, and let it run (roughly if necessary) through the engine.

After sitting 3 years I would also replace the fuel line itself!


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