My friend was concerned when the Cub started stopping but would start right back up in less than a minute. From his description and our discussion, I was certain that it was a fuel starvation issue. The gas tank and sediment bowl were each clean as a whistle, so the next thing was to remove the carb and inspect the in-line filter. This is what I found (my apologies for the poor focus, but you get the idea):
After a few squirts of carb cleaner, this is what that puppy looks like:
I reinstalled the filter and carb and called the job done.
My friend called me this evening and said that he mowed for three hours and the Cub never missed a beat. Before, the Cub would have stopped several times during the three hours.
I followed the How To posted by Gary Boutwell http://farmallcub.com/phpBB2/viewtopic.php?f=139&t=38266 to install the filter. This filter has been in use probably six or seven years and it certainly did what I wanted it to do. After cleaning it is as good as new. I keep a supply of those filters on hand and any Cub that I work on the carb gets one.
Bill
