Small Engines (Lawn Mowers, etc.): STIHL KM85R trimmer, stihl km85r, question pool

Question
Equipment:  STIHL KM85R 2 cycle trimmer.  Want start fequently when it get warm.   Spark test for plug doesn't show spark when crank rope pulled.  Don't know how to test spark module but resistance on the two terminal shows open.  Runs great when its running.   Has never died once its running.   3 years old and didn't do this until recently.  Don' know where to find repair manual.

Answer
Hello John:

Sorry for the Delay. This Question was Located in the Question Pool. Remove the Spark Plug and Wrap the Threaded Section of the Plug with Wire, then Attach the Other End of the Wire to the Engine Block. Now, Remove the Coil Shut Off Wire at the Shut Off Switch. Check for Fire. If No Fire, then Remove the Cut Off Wire from the Coil (removal of the blower housing required) and Check for Fire.  Turning the Engine By Hand (giving a Quick Twist with the Wrist) is Enough to Make the Coil Fire the Plug. If Still No Fire, then the Coil/Ign Module is Bad. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 9pm EST (US). My New Day Starts then. Thanks.

Respectfully

John