ORIGINAL: Flyboy Dave
How would you interperet that chuck ?
I would interpret it as you completely missing the point and just picking out one little piece of information that you THINK makes your point. Did you ignore their definition of sloppy rich, and their warning to "NEVER RUN AN ABC ENGINE AT THIS SETTING" sloppy rich or at what they call "rich mixture"? And in fact, it seems YOU are the one who failed to read far enough. Instead of stopping at the definitions, you should have read far enough to get to the actual DIRECTIONS!
"1> BREAK-IN running should be done with the recommended propeller at a
slightly rich setting. You want the engine to be at running operating temperatures. The needle valve should be set at a point just into this range from a four cycle setting."
Note the emphasis on SLIGHTLY, it's theirs, not mine. Slightly rich Dave. Not four cycling, not rich, not sloppy rich.
Slightly rich.
You made a statement "Not one manufacturer has said that running an engine sloppy rich will hurt it....ever". I've provided several examples contrary to your statement. This discussion is over.
Edit: I didn't mean to imply the thread is over, just Dave's assertion that manufacturers have not warned users about running ABC engines too rich.