Yellow Jacket SuperEVAC Pump Model 93560

[Leaky88]

1)Trying to determine age of used YJ 93560 pump I purchased.
I know these have been in production for quite some.
I could not find any date stamp on mine. However, I have noticed in searching for one
the serial numbers are proceeded by a single Capital Letter. For example:
P 301014; Q 310954 and mine an S 358366. Does anyone know how you tell the age of one?

2)Does anyone know a source for parts for the YJ 93560? Since I don't know the history of
use/abuse I want to drain the oil, remove/clean the Oil Tank, and replenish with fresh oil. It
is my understanding, the oil needs to be drained HOT after each use and renewed. The oil #93194 it
calls for seems expensive. But, so is a gallon of #2.

Any information/advice on this pump would be appreciated.

Thanks

 

[tyyost]

I have a similar pump I bought at auction. Bought the Yellow Jacket oil for it, spends, but it easily 2 full changes in the quart.

They are a big company, I’d reach out to them on age and parts. https://yellowjacket.com/product/superevac-replacement-parts/

 

[Leaky88]

Thanks. I’ve heard some good reviews on the pump to include a very long service life told by those in the HVAC business.