Toro 117-5905 Lawn Mower Switch Module

The Toro 117-5905 Lawn Mower Switch Module controls electrical switching signals within Toro mower systems. Wear, internal faults, or connection problems can effect switch response, starting operation, and control operations.

Common Symptoms:

• Engine will not start.

• Starter engages intermittently.

• Safety system prevents engine cranking.

• Electrical connection becomes loose.

• Mower shuts off unexpectedly.

Safety Circuit Failure

Quick Check: Verify that all safety switches are properly engaged before starting.

Fix Suggestion: Restore the switch module connections if an interrupted circuit is detected.

Prevention Tip: Inspect safety switch wiring during routine maintenance.

Intermittent Starting Condition

Quick Check: Check whether the engine starts consistently when safety controls are engaged.

Fix Suggestion: Secure loose electrical connectors attached to the switch module.

Prevention Tip: Keep connectors clean and protected from moisture.

Unexpected Engine Shutdown

Quick Check: Observe whether the engine stops while the safety controls remain engaged.

Fix Suggestion: Inspect the module for damaged terminals affecting circuit continuity.

Prevention Tip: Avoid pulling or stretching the wiring harness during servicing.

Loose Electrical Connection

Quick Check: Examine the module connector for movement or incomplete engagement.

Fix Suggestion: Fasten the electrical connector until it is fully seated.

Prevention Tip: Periodically inspect the connector for wear or corrosion.

Customer Experience: Several mower owners shared that replacing a switch module restored dependable starting and reduced unexpected shutdowns caused by interrupted safety circuit connections.