lawnmower no start when hot

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   I recently acquired a used commercial grade Husqvarna self-propelled lawnmower with 6.5 hp OHV Briggs& Stratton engine.  It's a Husqvarna 580RSW (made by Ariens for those in the know).  It's in good shape, but has a nuisance problem that I need to take care of.

Father-in-law says it doesn't want to re-start when hot. I've had luck correcting a similar issue with another mower by replacing the ignition module, but you folks have me re-thinking the part replacement method of repair.  

Does the ignition module seem like a logical place to start?  I'm told to get it to operating temp and then when the symptom presentt, remove the plug, ground it and see if it sparks.  If no, then replace module.  If yes, module is good.   

Another suggestion was a bad valve?  

Suggestions?  I cranked it on the first pull yesterday.  I think I'll put fresh gas in it, replace the plug, change the oil and a new air filter.  What else?

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Swatkinz Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: December-03-2003 Location: Lexington, SC Status: Offline Points: 1307	Post Options Post Reply Quote Swatkinz Report Post Thanks(0) Quote Reply Topic: lawnmower no start when hot Posted: March-20-2012 at 12:26am
	I recently acquired a used commercial grade Husqvarna self-propelled lawnmower with 6.5 hp OHV Briggs& Stratton engine. It's a Husqvarna 580RSW (made by Ariens for those in the know). It's in good shape, but has a nuisance problem that I need to take care of. Father-in-law says it doesn't want to re-start when hot. I've had luck correcting a similar issue with another mower by replacing the ignition module, but you folks have me re-thinking the part replacement method of repair. Does the ignition module seem like a logical place to start? I'm told to get it to operating temp and then when the symptom presentt, remove the plug, ground it and see if it sparks. If no, then replace module. If yes, module is good. Another suggestion was a bad valve? Suggestions? I cranked it on the first pull yesterday. I think I'll put fresh gas in it, replace the plug, change the oil and a new air filter. What else?
	Steve 2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09)

Nautiquehunter Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: December-31-2008 Location: Lake Lanier GA Status: Offline Points: 1010	Post Options Post Reply Quote Nautiquehunter Report Post Thanks(0) Quote Reply Posted: March-20-2012 at 2:54am
	That is exactly what I was going to suggest. I always use the KISS method to repair small engines.

lawnmower no start when hot

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