Upright SL-20  Model   63400-006

serial 242

 

this might lead to the manual….pain to deal with

https://www.manualslib.com/manual/1343964/Upright-Sl20-Series.html?page=57#manual

Check this before you use it

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Lift Electrical

DuanneLift Name of Components

 

DuanneLift Hydraulic

This might be the manua

https://www.manualslib.com/manual/1343964/Upright-Sl20-Series.html?page=58#manual