Hi Guys,

I just picked up a MFJ-8043 Curtis Keyer- it is labeled MFJ-401 but the difference seems to be the case is smaller. The first 8043 keyer from MFJ had the weight and pitch controls on the panel and ran on C cells. Mine has the controls internal and uses a 9V battery or wall wart.
I scanned the page for my own use and thought others may need it one day- I'm sure they're out there as they were popular. This is a very early MFJ product and not built well mechanically. But since my OM (KC4KM) bought it, I'm sure it was cheap :-) Just kidding OM. I can't complain as it was a gift- and it now works after a minor repair to the power jack. I'm running it on battery for portable use.
As MFJ does not list the item, here is a PDF of the MFJ-8043 and MFJ-401 (original) manual for download. Don't sell it or include it on a CD for sale please- and please do not post it on BAMA.

73
Bill 
N4BKT