How do I change belt on dyson dc 07 animal

check and clean the brush bearings located on each end most reasons that belts break is the brushes are binding from debris --others bad belt or old and dried out

this is what is is broken it is the clutch Dyson clutch belt assembly for DC07 amp DC14 900252 04 473

most likley needs to be changed it is also a good idea to change the roller brush at this point also

Dyson Dc 07 14 33 Upright Models oem 904174 01

You may need to replace the belts or the clutch assembly.

DC07s have two drivebelts that turn the brush bar - one connects the output of the motor to the clutch, the other connects the clutch to the brush bar.
You can check the latter simply by removing the sole plate and looking. Unfortunately the other belt is hidden under a plastic cover, so you cant see if it is okay or not without some dismantling. This cover is not easy to remove and requires a Torx driver to under the securing screws.
If, after removing the cover, the other belt is okay, then you have a faulty clutch. New clutches are available on eBay reasonably cheaply, but again good tools and DIY skills are required.
Have a look atwww.dysonmedic.com which has some excellent info on dismantling and repairing a DC 07.

DC07s have two drive belts that turn the brush bar - one connects the output of the motor to the clutch, the other connects the clutch to the brush bar.
You can check the latter simply by removing the sole plate and looking. Unfortunately the other belt is hidden under a plastic cover, so you cant see if it is okay or not without some dismantling. This cover is not easy to remove and requires a Torx driver to under the securing screws.
If, after removing the cover, the other belt is okay, then you have a faulty clutch. New clutches are available on eBay reasonably cheaply, but again good tools and DIY skills are required.
Have a look at www.dysonmedic.com which has some excellent info on dismantling and repairing a DC 07, but unless you have access to such tools, and feel confident to tackle it, it's probably time to call Dyson or a Vacuum repairer.

This model has Brush Control
The Brushbar can be turned off to protect rugs and delicate floors
You've either accidently turned the brushbar off or the belts broken

You don't need to replace the whole clutch, you can replace just the belt. You can get the clutch belt and the brush roll belt combo pack for the DC07 here:

http://www.vacbelts.com/dyson-clutch-system-belt.htm

The end caps of the brush assembly which contain the bearings are only a push fit onto the spindle (quite tight). Remove these and the brush bar will pass through the drive belt loop. To achieve this the belt has to be stretched slightly so care has to be taken not to over-stretch what might be a belt getting to the end of its life. When refitting the end caps do not forget to aline them properly so they fit into the sole plate recesses correctly.

I cannot see at the moment how to replace the drive belt on the DC 07 without significant dismantling (that will probably be my next job) I do not see the use of the Dyson tool you offered.

http://www.sparesaver.com/help-and-support/dyson-section/dyson-technical-advice-450/dyson-dc07-technical-advice-459/dyson-dc07-changing-the-clutch.html

Try this link. Idid mine Dc 07 today. You need a Trox 15 screw driver