Jody,
Thanks so much for posting the Wallas pdf file. I have never seen an instruction manual either.
As for anecdotal evidence, I've had no problems running mine on Kleen Heat for almost 2 years now other than to make sure fuel is up into the feed tube at startup after long disuse.
I was not aware that the yellow and red flashing rates were indicative of what problems are preventing normal use.
John
