Small Engines (Lawn Mowers, etc.): missing bolt, drive shaft, model numbers

Question
I have yard machine rider and have lost the bolt that holds the pulley for the deck and drive motor belts. Its the pulley a on the drive shaft. Was wondering if you know the sizeof the bolt?

Answer
Hello Bob:

The Bolt Should be 7/16" X 20. The Length of the Bolt is Going to Depend on the Model Numbers. Send me the Model Numbers Off the Mower, Please. With these I can Locate the Proper Manual and Better Assist you. 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 you Question at or Just After 9pm EST (US). My New Day Starts then. Thanks.

Respectfully

John