Where can I buy a clutch for a vita mix 5000 - Vitamix Vita Mix 891 - 1-Drive Socket Kit w/ Allen Wrench & Instructions For A

Have a look at this, this guy has done the job.

http://uppityairlinepilot.blogspot.co.nz/2012/09/vita-mix-5000-variable-speed-fix.html

I would suspect a motor fault, most likely an insulation problem in the armature or the fields. Contact Vitamix for your local authorised service agent. Unless it has been assembled incorrectly it should not be one of the internal wires as they are supposed to be secured and correctly routed during assembly.

Contact customer service.

They are great,

Check it here:

Contact Us Customer Service Vitamix

WE do not have your model here in NZ but this is how you get into our models
Remove square rubber base beaker locates onto. Remove motor driving clutch. Remove 4 screws under rubber pad you have just taken off.

Need special tool:

check here:

Amazon com vitamix wrench assembly Home Kitchen

Check with the experts, they know best - and they are great to help you out...

Contact Us Customer Service Vitamix

The problem was the seal was worn, allowing liquid to seep past into the top blade shaft bearing washing out the grease and ruining the bearing. The "noise" you heard was the bearing running without any lubrication. Both bearings and the seal needed to be replaced but I have not found a source for purchasing these. Vita-Mix Company does not sell parts, they sell units (outrageously priced units)!

Is it getting hot when you operate it? If you run a mixer for a long
time, the motor will get very warm. On the older units, when the
motor overheats, the various parts of the motor and its container
may start to melt. Mixer motors are not designed to last forever and
a replacement motor may be available from the manufacturer.
Another way is to purchase another similar mixer as you can on
eBay and swap parts.

Here you go:

"http://www.payloadz.com/go/sip?id=889319"

Switch must be bad, remove the four screws on the bottom they are under the feet, then check switches, and replace broken one.