How do you bypass starter solenoid on a yardman lawnmower?
You jumper the two heavy gauge wires. Those are the positive wires. Make sure you use a jumper wire that is as thick as the wiring that you are jumpering across, and understand that as soon as you do that the lawn mower starter will activate, providing that all of the other safety sensors are in their respective operating state. It would be easier and safer to just replace the solenoid with a new Briggs and Stratton part which goes for about $9.95, or go to Autozone and buy a starter solenoid for a 70’s model Ford pickup for $9.99. It’s a whole .04 cents more, but it’s easier to find an automotive parts store than a small engine shop sometimes.