Kobalt compressor and the flying keyway

[pocoloco71]

This is not a knock on them, just some fyi. I was blowing of some dirt on
the frame I was cleaning today and all of a sudden the compressor starts knockin
and wailing. Run to turn it off, and I'm thinking fan belt loose. So I check
everingthing the manual says.Call the 866 number.I give her my model ect.
And she says see if the keyway is lined up with the little pulley. Nope I say.
and she says, They fly out, look around you may find it. I did. She says I
send you a belt, new pulley, a set scew, and a new motor. Thank you very
much. She seemed to indicate that set screws loosen regularly and the key
way flys out, so you want to use plenty of red locktite. No hassle, no Joe
Friday,nothin, just bam. I run the checks, oil changes etc, but it doesn't
mention the keyway nut. I never owned one with this much capacity befor
so this may be common knowledge.