I have a Honda GCV160 5.5 self propelled lawn mower, which runs for anything between 3 - 10 minutes and then cuts out. How do I adjust the Air/Fuel mixture as the spark plugs are very sooty.
Defintely spark plug change. Had exactly the same problem. New plug sorted it out!
I know that sounds strange and all the symptoms point to fuel but........
Found a number of entries on other forums that had same problem and plug change as the solution.
Tim
May 2011
See if the gas cap valve is plugged. If it is it will not let air into the tank and creates a vaccume and doesn't let fuel enter the carburetor. Try running it without the gas cap on. See if that helps
Robb
April 2011
before you change any of the settings try fitting a new spark plug - worked for me having stripped down the carb etc!!
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Try fixfault.com to fix lawn mowers.