22" 7 H P Snowthrower
Do you know the model number type number and serial number of the engine?
Your unit is a 755E which is the same as(NNN) NNN-NNNNALLIS CHALMERS,DEUTZ-ALLIS & AGCO ALLIS model 722
If I have all three numbers of the engine, then finding the age is easier.
I KNOW it is pre 1998 because the above info was found in Tractor, Attachment & Chipper/Shredder Cross Reference Guide, effective January 1, 1998, courtesy of Simplicity Manufacturing, Inc.
I am still looking
I found a parts manual for your unit
It was printed in 1988, so that would be a pretty good guess of when you unit was made, but the serial number will be slightly more exact if we need to be that exact.
I found a FREE aperators Manual
And a Free Parts Manual
OK, After further research, I have found that Simplicity made these models over seberal years.
Again, the serial number will tell us for sure.. But that is your range Now.