Will lawn mower run if rectifier regulator is bad?

If the rectifier regulator is bad, it can affect the lawn mower's ability to charge the battery and manage the electrical system. The mower may still run if it has a sufficient battery charge, but electrical issues could arise, leading to poor performance or stalling. Additionally, components that rely on the electrical system, such as lights or electric starters, may not function properly. It's advisable to replace the rectifier regulator to ensure optimal performance and reliability.