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What makes the blades on a riding mower stop turning once the mower belt is disengaged?

I have a poulan pro PR1842STC; the blades won't stop turning after I disengage the mower belt. Before when I disengaged the mower belt, within seconds the blades would stop turning regardless of the engine rpm. Now they continue turning until they slow down to a certain rpm then a "brake" or something engages (I hear a "clunk" sound") and they immediately stop turning. I'm now having to turn off the engine to get the rpm's slow enough to get the brake to engage. What is the "braking" or stopping system for stopping the blades on a riding mower?

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Posted on Jan 02, 2017

lester482529
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SOURCE: Knocking in mower deck or belt clutch when engaging blades, motor bogs / slows down

YOU MAY HAVE A BENT BLADE OR EXESSEIVE BUILD UP UNDER THE DECK

Posted on Jun 01, 2009

  • 1 Answer

SOURCE: once engaged and start mowing, you can mow for

I have the same problem with mine and its not the air filter. I have a new filter and cleaned it and still does it. I even took the air filter off and it still does it.

Posted on Aug 18, 2009

  • 6 Answers

SOURCE: Park Brake / Clutch Lever will not disengage.

check ur belt and pullys under deck or pto switch went bad could be replace

Posted on Oct 11, 2009

  • 75 Answers

SOURCE: Riding only on an old Craftsman riding mower, when

Hello
Check on the mower that your drive belt has not come off or has not broken
Thanks

Posted on Jun 14, 2011

  • 579 Answers

SOURCE: swisher 44" mower starts and runs but engine bogs

The engine in this machine seems to be powerful. If you can remove the belt from the pulley that drives the blade. Try turning the pulley buy hand. If it turns tight or not at all this is your problem. The unit that is the pulley to blade assembly is seized or ready to seize. Sometimes they are designed to be taken apart and repaired, and sometimes they are not. Did you check for a grease fitting within the pulley to blade unit?
I would like to hear how this works out for you. Best of luck.

Posted on Jun 14, 2011

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