Question: I have a stackable washer dryer combo. The dryer works on 240V and the washer works 120V, but they have 1 control panel. I don't have 240V in my new apartment, and am hoping to have the power cord switched to a 120V. 
I have read that this process involves: 

* getting a 3 wire 120 cord-set of at least 14 gauge and a 14 gauge jumper wire.
* connect neutral to neutral terminal
* black to black terminal
* ground to ground terminal
* and jumper wire from neutral to red

I have no experience with electronics and don`t plan on doing this myself, I had an electrician come look at it for me but he has never done it before, my question is:

Does this look correct, can he or (most likely another electrician) do this? 
I know it won't be code, I just need to know if it's possible.

Answer: 
This is a fairly complex hack. The dryer needs to work on 1/4 the available power. It was designed for a 240x30 = 7200W supply, and you need it to run on 120x15=1800W supply. So you're asking a *lot*. 

You will need to get the schematics and reverse-engineer the washer-dryer. Chances are the "washer" part is easy, as they probably use a commercial-off-the-shelf design made to run on 120V.

For the dryer, you'll need to carefully go through each internal circuit and figure out how to make it accept 120V. The heating element is the easiest; simply connect the endpoints to 120V instead of 240V. This will mean the element will see half the voltage, and (thanks to Ohm's Law) 1/4 the power. 

If you have a small load that insists on being 240V, then you need to use some electronic skill to deal with that. 

You will also need to make sure all the loads together don't exceed the circuit capacity (15A if you are attaching to a common household outlet with 14AWG wire). Watch out that the dryer motor + heater don't exceed that. You might be able to stay under circuit capacity with an interlock to prevent washer and dryer from running simultaneously.
You can buy a converter/ transformer online for under $100 can find for 5-10 $but I'd stick with good quality so don't blow up the house