Small Engines (Lawn Mowers, etc.): no spark, craftsman lawn tractor, trigger gap

Question
Hi, I have a craftsman lawn tractor with a 25 hp kohler engine, 2003, model nr 917.273461I replaced the starter several months ago also I did all the yearly maint over a month ago, it ran fine until today. it turns over great but see no spark after removing. what are the steps I should take to isolate the problem. Thanks in advance Mike

Answer
Hiya Michael

Heh - I'm having a bit of difficulty here- you say kohler, and I believe you, but Sears cross references model 917.273461 to a briggs!  Just for my peace of mind- it DOES say Kohler in big letters on the cowling right?  This is a commander series engine?  (I'd greatly prefer Kohlers engine plate model numbers if you can see them)

Depending on the above- you may have a trigger gap issue.  Modern Kohlers with breakerless ignitions use a solid state trigger circuit that relys on a pin embedded in the flywheel.  Theres a gap setting between the pin and the coil pickup.  
Verify for me that you have a Kohler and I'll shoot you some specific checks.
Lemme know!