Small Engines (Lawn Mowers, etc.): hey, model numbers, birth defect

Question
it came from the spark plug side now the tractor wont even turn the modle number is 917.254243 have you worked on this kind of stuff for along time you seem to know every thing there is to know. and im sure you know that once you fix one thing somthing else goes wrong. you said you were disabled what happened if you dont mind me asking  hope you can help me i thank you for all the help you have givin me so far. thanks alot
                 

               john  

Answer
 Hello John:

 I have been Working on Small Air and Water Cooled Engines for 34 years. I fell and Injured my Back. They found a Birth Defect that I or Noone Else Knew I had. Ok, these are the Mowers Model Numbers. Look on the Engine Itself. The Engine Model Numbers Are the Ones I need to see the Diagram for the Engine. Thanks.

 Respectfully

 John