Briggs and Startton backfires wont start


Old 06-27-14, 04:05 PM
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Join Date: Jun 2014
Location: usa
Posts: 1
Briggs and Startton backfires wont start

16HP OHC Craftsman riding mower - Was mowing when engine stopped running as if I had turned it off. Found an exhaust rod broken. Replaced rod, replaced the fly wheel key since I already had it apart. Cleaned the gas tank, fuel line, carburetor and air filter also. When I start it tries to run but backfires and will not run correctly. I had replaced the spark plug, no help so put the old one back in just as a test. Took the OHC apart and cleaned the valves. Still have the same problem with back firing. Remember that this is a riding mower so no bent shaft. Any suggestions?
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Old 06-28-14, 10:06 AM
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Join Date: Mar 2003
Location: NC, USA
Posts: 17,764
Did you determine what caused the rod to break? It could just be a symptom of the real problem.
Old 06-29-14, 06:06 AM
Join Date: Jun 2012
Posts: 844
Adjust the valves, leave the exhaust on the loose side of the spec. That should stop the backfire and get you running again.

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