Small Engine Troubleshooting Problems? Ask a Mechanic Now.
What is the battery voltage , before and when you turn key to start?
Battery may be discharged or cables may be loose or making a bad connection. You did check to be sure engine will turn manually?
My response shows as customer.
I think the battery may be too low to crank the engine. I would be prepared to jump start or replace the battery, and take new spark pugs.