140- and 720-series electronic pianos
The 140- and 720-series electronic pianos were a bridge between the early electronic piano models and the iconic 200/200A. The 140/720 addressed a lot of things about earlier EPs that made them difficult to play, and, in many ways, are almost as easy to play and maintain as a 200 or 200A. But they still have very cool midcentury styling.
The 720 is the cabinet version of the 140. It has the same mechanical design and the same amplifier, but it looks like a (very) small spinet piano.
Models in 140 and 720 series include:
140 (140A, 140B, 146…)
145 (145A, 145B…)
720 (720A, 720B, 726)
140145720Technical drawings for Wurlitzer models 140 series and 720 series
Wurlitzer 140-series and 720-series electronic pianos had sub models (140, 145, 720A…) which may be contained in this grouping of documents. All of the models shared parts, hence many technical part drawings were for multiple models in the series.
The below drawings include part numbers for shipping boxes and packing for the Wurlitzer 140 and similar models.
502995 (End pad for the Wurlitzer 140)
502996 (Utility pad assembly for the 140)
503003 (Carton for the 140)
503009 (End export crate for the 140)
503010 (Side export crate for the 140)
503011 (Top & bottom export crate for the Wurlitzer 140 and Wurlitzer 145)
503282 (Carton for the 720)
503284 (Bottom pad for the 720)
503287 (Back corner pad for the 720)
503289 (Bottom and top cap for the 720)
503290 (Shroud for the 720)
503440 (Export crate side panels for the 720)
503441 (Top & bottom panels for the 720)
140145720Sustain pedal & action parts for the 140-series Wurlitzers
The below drawings include the following part numbers. The gallery includes drawings for parts of the mechanical action, the sustain pedal, and mounting brackets.
502931 (Cable assembly for the Wurlitzer 140)
503012 (Whip stop for the 140)
503027 (Serial number plate for the Wurlitzer 145A)
503134 (Bass damper felt for the 140 and 145)
503135 (Middle hammer & felt assembly for the 140 and 145)
503150 (7/8” paper shim for the 140 and 145)
503151 (1/2” paper ship for the 140, 145 and Wurlitzer 720)
503152 (Balance rail shim for the 140 and 145)
503172 (Nylok lock nut for the 140 and 145)
503276 (Lock plate for the 720)
503277 (Support bracket for the 720)
503278 (Block & switch assembly for the 720)
503794, 650194 (Electrode spacer for the 140 and 145)
650190, 650191, 650192 (Insulator bushing for the 140)
650439 (Knurled nut for the 140)
650450 (Bass damper felt for the 140 and 145)
651110 (Sustain cable assembly for the 720)
651115 (Sustain cable mounting bracket for the 720)
651193 (Butt damper, reeds 1–32, for the 140)
651195 (Butt damper, reeds 33–64, for the 140)
651198 (Damper bracket cover for the 140)
651199 (Damper cover for the 140)
651200 (Damper assembly cover for the 140)
651235 (Vertical cleat for the 140B and 145B)
140145720Cabinet & cosmetic drawings for 140-series Wurlitzers
The drawings below include drawings for the following case and cabinet parts:
503005 (Wurlitzer decal for the 140)
503027 (Serial number plate for the Wurlitzer 145A)
503138 (Glide and name plate layout for the 140 and 145)
503313 (Complete leg assembly for the 720 bench)
503314 (Leg and bolt assembly for the 720 bench)
503220 (Grille cloth for the 720)
503380 (Left keyblock for the 720)
503344 (Side silkscreen for the 145 and 720 export models)
503345 (Serial number plate for the 140A export model)
503346 (Serial number plate for the 145 export model)
503431 (Serial number plate for the 720A export model)
651223 (Serial name plate for the 140B)
503637 (Bottom for the 720)
503635 (Bench end rail for the 720)
503636 (Bench side rail for the 720)
503638 (Bench top for the 720)
504127 (Serial number plate for the 145B)
650416 (Right hand keyblock assembly for the 140)
650438 (Speaker grille for the 140)
651071 (Vibrato knob for the 140, 145, and 720)
65111 (Serial number plate for the 720A)
140145720Electronic components
The drawings below include electronic components from the 140 and 720 series.
503208 (Heat shield for the Wurlitzer 145)
503212 (Amplifier and heat shield assembly for the 145)
503685 (Cable assembly for the 140)
504126 (Speaker and cable assembly for the 140B and 145B)
600370 (Jack for the 140 and 720)
650196 (Transistor for the 140)
650412 (Cable for the 140)
650429 (Transistor for the 140)
650444 (Varistor for the 140)
650445 (Dart-shaped speed clip for the 140)
650446 (TO-3 insulator for the 140)
650453 (Amplifier cable assembly for the 140)
650556 (Potentiometer for the 145)
650566 (Potentiometer for the 145)
650570 (Tube for the 145)
65114 (Pilot light shield for the 720)
651233 (Bulk cable for the 140B and 145B)
651234 (Line switch cable for the 140B and 145B)
652229 (Amplifier lamp for the 140B and 145B)
652520 (Potentiometer for the 140B and 145B)
What about the bigger electronic piano drawings?
The document collection includes blueprints up to 48" x 36”, and many useful and interesting drawings are on the larger size. Right now, our scanner can handle pages up to 12” x 17”, but bigger drawings can be scanned in stages and then pieced together using Photoshop. It is a time-consuming process, so, for the sake of efficiency, we’ll be focusing on the smaller drawings first. But the Portacover is one of our favorite parts, and we wanted to share this drawing of it.
The Portacover is the lid that covers the keys, and we love it because the legs fit inside. It’s a really thoughtful detail that really helps if you’re transporting the keyboard. The legs actually screw into the oval pieces pictured in the drawing, and are held in place using the center strap. This allows the keyboard to be taken anywhere—in theory, by one person carrying it by the handle…but, in practice, by two people carrying either side. (It’s pretty heavy.)
Note the table at the bottom of the drawing, which includes part numbers for the various sub-assemblies and other parts comprising the Portacover.
Need a different drawing?
We are digitizing the complete collection of Wurlitzer technical drawings, starting with the 8.5×11” and 11×17” drawings. So far, we have digitized about 3% of the collection.
If you’re looking for a specific drawing for a free reed organ, or a different organ, electronic piano, or tone cabinet, visit the Request page.