I can't figure out how to start the mower. Unable to decipher the Instruction booklet. Believed to be series 625. with the following: Self propelled electric key start with a primer. No choke present

Hi and welcome to FixYa. I am Kelly. The primer is the choke. You press ther primber bulb 3 times with the gas tank full and then hold / grip the safety bar at the top of the handle against the handle then either use the key start or recoil to start it. Just make sure the engine crankcase is filled with the correct amount of oil before starting. Sorry for being brief but it really is that simple.

Thanks for choosing FixYa,

Kelly