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Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1262
Experience:  over 15 years experience in small engine repair, multiple certifications
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I have an 2003 Yard Machine rider mower, automatic, 21 horse

Customer Question

I have an 2003 Yard Machine rider mower, automatic, 21 horse Briggs and Stratton OHV I/C.After 12 years of great performance it started to sputter and wont stay running, but starts every time. Changed fuel line, tried new filter and pump, took carb off and cleaned and blew it out. Now it will run good about 25 min.s then do same thing but after it cools I get another 25 mins again, and again. Also changed plugs. What could I try next.
Submitted: 1 year ago.
Category: Small Engine
Expert:  Briggs-Fan replied 1 year ago.

Hi my name is ***** ***** welcome to just answer, once it shuts off it has to cool down before restarting right ?

Expert:  Briggs-Fan replied 1 year ago.

If so I would try to get a compression tester and check the compression right after it dies to make sure it's not a valve problem .