My 1420 (gas) has been flawless..with the exception of a few coils over the years.
Now it's really acting strange.
I start it up and it runs perfectly for 5 minutes or so. Then it disengages the mower 8-10 times over a period of 5 minutes or so. Then for a few minutes the engine will "burble" and sometime a mild backfire...then suddenly it runs perfect for as long as I care to mow.
And it follows the same pattern everytime I use it. Been doing it all summer...
I'm at a loss..any thoughts ??