mac 'one to a customer' gyvr...
Only one motor, at the end of the arm closest to the front of the vehicle. Other end is referred to as an "idler". The full owner's manual can be found at
https://lci-support-doc.s3.amazonaws...cd_0001369.pdf
The manual also has info on things like cleaning, maintenance, how to operate it if it loses power, etc.
Happy Retracting !