Why won't my riding mower start after engaging the blades?

  • Thread starter Thread starter dezstir
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SUMMARY

The discussion centers on troubleshooting a Husqvarna riding mower that fails to start after engaging the blades via the PTO switch. Key issues identified include potential malfunctions of the safety switch, solenoid, or starter motor. Participants recommend using a volt-ohm meter (VOM) to check the safety switch and suggest inspecting ground connections, as poor grounding is a common issue. Additionally, jumping the solenoid and checking the starter gear for proper engagement are advised to isolate the problem without unnecessary part replacements.

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  • Understanding of Husqvarna riding mower components
  • Familiarity with electrical troubleshooting using a volt-ohm meter (VOM)
  • Knowledge of solenoid and starter motor functions
  • Basic skills in diagnosing electrical connections and safety switches
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  • Research how to use a volt-ohm meter (VOM) for troubleshooting electrical components
  • Learn about Husqvarna riding mower safety switch mechanisms
  • Explore techniques for testing and replacing solenoids in small engines
  • Investigate common issues with starter motors and their engagement with flywheels
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Riding mower owners, small engine mechanics, and DIY enthusiasts looking to troubleshoot starting issues in Husqvarna lawn mowers.

dezstir
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While riding my Husqvarna lawn mower (two years old) I decided to shut down. While shutting down I accidently engaged the blades (PTO switch) and then quickly disengaged all while the engine was ramping down speed. I understand that there is a safetyswitch to prevent starting if the blades are engaged, just as there is one under the seat. I do hear a clicking noise from the solenoid. The manual says that either the starter motor or the solenoid should be replaced? Does anyone know how I can determine one from the other in order not to buy both?? Idid charge the battery and can officially rule that out. can you help thank you...
 
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I would suspect the safety switch stuck based on your post
a simple VOM will check that go on line and find a wireing diagram to see if the safety should be open or closed
also check you ground connections as a bad ground is a very common problem

next see if you can short or jump the solenoid to check the starter
 
Yeah, use a screwdriver to short across the solenoid. Also try cycling the limit switch if you haven't already. Another thing to check is the gear on the starter that engages the flywheel. If it's stuck in the engaged position it will not allow the starter to spin up.

I doubt your starter is bad. It would be quite a coincidence if it is.
 

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