Picked up a Pfaff 1425 900/56 with Efka Modular V720 controller and have it listed for sale locallly. Since I don't have the manual right now am I guessing correctly that the external air source is used to lubricate the machine (I see 2 oil bottles) and the purpose of the controller is to control stitch length and speed?
On a side note..I'm very pleased with the Juki LU-563 I picked up ( a lot easier to operate)
Thanks
Owners manual for Efka V720? Here it is; http://www.keysew.com//Webpages/DemoImages/EfkaV720OwnersKeystoneSewing.pdf (http://www.keysew.com//Webpages/DemoImages/EfkaV720OwnersKeystoneSewing.pdf)
look on the back of the machine is there a pneumatic cylinder ?
it could be a square ali one.
if so the air could be for an air foot lift.