Next, you’ll connect the wires that you disconnected from the old disposer, to the new disposer. If this isn’t a replacement project, and you’re adding a new disposer where you didn’t have one before, you’ll first need to call an electrician to run the proper wires and a wall switch to the unit. For our project, the electrical wires and switch were already in place.
Garbage disposals might be one of the most underrated conveniences in modern kitchens — and it’s usually not until something goes wrong that we realize how truly valuable the appliance is. When it comes to garbage disposals, one of the most common problems homeowners report is a leak. But while a leaky garbage disposal is an annoyance, the issue is typically easy to fix. This no-frills guide will help you find the source of a leak and detail how you can remedy the issue with a little knowledge and DIY magic.
The horror movie image of victims having hands and arms severed in a garbage disposal is entirely a Hollywood invention. In reality, the blades inside a garbage disposal are rather dull grinders, not gleaming, razor-sharp sabers. That is not to say that a disposal should be taken lightly—it is indeed possible to be painfully injured if you don't practice basic safety measures. 
We’re starting with clogs because they’re actually only *kind of* garbage disposal problems. Technically, garbage disposals can get jammed (see below!), but if water stands in your sink and takes forever to drain, it’s probably because the kitchen sink pipe has been clogged. Many different materials can cause clogs, from sediment, to scale, to grease, to food remains. Depending on the culprit, clogs may begin to smell. Ideally, your garbage disposal should have ground up debris enough that it wouldn’t clog anything up, but nobody’s perfect.
Start by turning off and unplugging the garbage disposal. Next, you’ll need the wrench that came with your disposal. If you don’t have it, you can buy a replacement in a hardware store that sells your disposal brand. Find the hex-shaped opening at the bottom of the disposal unit. Turn the wrench clockwise to dislodge whatever’s blocking the flywheel. When the object dislodges, you’ll feel the flywheel start to turn easily. Reset the disposal and run cold water while quickly turning it on and off repeatedly.
One result is larger amounts of solid residue from the waste-water treatment process. According to a study at the East Bay Municipal Utility District’s wastewater treatment plant funded by the EPA, food waste produces three times the biogas as compared to municipal sewage sludge.[32] The value of the biogas produced from anaerobic digestion of food waste appears to exceed the cost of processing the food waste and disposing of the residual biosolids (based on a LAX Airport proposal to divert 8,000 tons/year of bulk food waste).[33]

A. First, troubleshoot a bit. You can stick something down the drain (not your fingers) to try and dislodge whatever may be causing the blockage. You can also try using a shop vac to unblock the drain. If these options don’t work, cut the electricity connection to your device before you go inside to try and remove anything that’s stuck. If you still can’t find the culprit, call a professional. Your unit may be damaged.

After watching this video, I decided I could replace my garbage disposer myself. Honestly, I think your site completely misrepresents how VERY difficult it is to hold up a 20+ pound disposal unit firmly up against the mounting hardware as you are literally crammed under your kitchen sink and then try and somehow get all three tabs to slide into place. I was very disappointed and, after 4 nights of trying and retrying, finally just called a plumber. Please don’t show anyone lifting something that is big and heavy and make it seems as light as a feather. Shame. Shame.

You should first find out whether only the disposal is broken, or if the power has gone out completely in the areas near your kitchen sink. Try resetting the circuit breaker that leads to the kitchen, or replacing a fuse if you have an older electrical box. If the garbage disposal makes no noises at all when you flip the switch, you might also want to check under the sink to see that it’s plugged in.

Garbage Disposal Install