Small Engines (Lawn Mowers, etc.): No start, pushmowers, coil wire


Question
Hello and thanks for any help My daughter brought me here mower and it will not start. I checked the carb and fuel and it is all good. By the way I am an automotive tech. Removed the spark plug and it was fuel fouled. In checking it has no spark. As far as I can tell the ground is good with my DVOM. What are the specs for the coil and armature gap? The type of mower is a Lawn Boy model # 10684 and the serial number is 250026619. Thanks for the help.

Tony

Answer
This engine is a Tecumseh, and if you have no spark, you need to remove the small wire plugged into the coil on a small terminal,
and leave it off, with a new plug plugged on the coil wire and
laying grounded against the block, pull the reinstalled starter,
no spark=new coil.
  If you now have spark, you have to find out what is grounding out the coil.
   In some cases the engine control cable is corroded and barely moving the engine brake, and that is still grounding.  On pushmowers
when you let go of the bail handle, the engine brake engages, and the
coil is grounded.  Also might have a safety switch, like on a bagger
attachment or grass shield which might be grounding the system, have a look and see, and let me know.

  Fish