OK this is how to replace the belt without distirbing the wiring and unlike the other answers this is step by step start to finish.
Step 1.. with the dryer in the upright potition remove the two top screws on the rear end of the lid then slide the lid backwards this will dettach the lid.
Step 2.. Lay the dryer on its back(best on a rug or some cardboard)
In the bottom plastic plate on the front underside there are 3 slots if you gently push a flat head screwdriver in each slot in turn you will be able to remove the plastic plate. This exposes 4 screws remove the screws.
Step 3.. If you look at the top plastic plate with the controls from the inside of the machine at the end nearest to the drum you will see 2 simalar plastic tabs. Gentle push the tabs and the top control plate will release. AT THIS POINT BE CAREFUL AS THE WIRING IS ATTATCHED TO THE BACK.Swivell the control plate round 180 degrees using the wiring end as the pivot point. Either get sombody to hold the control panel in this position or place a chair next to the dryer to support the panel. This will now expose 2 more screws remove these screws also( the side panels will go a little floppy but dont worry they are supported from the bottom.
Step 4.. Now slide the front plate with the door in it back towards the top of the dryer 4 to 5mm now the front plate is loose. ALSO BE CAREFUL AT THIS POINT AS WIRING IS ATTATCHED. The wiring is attatched to the bottom right corner of the dryer so rotate the front plate round 90degrees using the bottom right corner as a pivot point and get somebody to support it or place it on a chair next to the dryer being careful not to stretch the wiring.
Step 5.. The drum is now exposed so this is a good time to look down the sides of the drum for the old snapped belt and remove.
Then take the replacement belt and place it round the drum ridged side inwards. You will see a black marked ring around the drum where the old belt used to be. slide the belt down until it is 3 inches above this mark. At this point although it looks like the belt is too small dont worry its not its a stretch belt. Now for the tricky bit ( i didnt find it too hard ) you need a tube 1 to 3 foot long. some people have suggested copper pipe but i used a metal extension pipe from the vacume cleaner. place the pipe between the drum and the belt get somebody to support the drum in place and prize the bottom of the pipe over on to the motor spindle ( bottom right of machine) now graduly push the belt down the pipe and the drum a little at a time working evenly around both. I found it helped to spin the pipe a little at the same time ( same principle as replaceing a pushbike chain) when the belt is almost in position hold the belt down and carefully slide the pipe out the belt will now be in place. You may need to spin the drum a little by hand to make sure the belt is in line with the black belt mark on the drum.
Step 6.. Now this is the bit i found tricky. whilst replacing the front cover ( remember the wiring ) first locate the ventalation pipe into its hole on the inside bottom left of the front plate when in place get somebody to push down on ot to hold it in position. Now you have to locate the fuzzy ring on the inside of the front plate just inside the rim of the drum.
Step 7.. Now all that remains to do is replace the screws and covers in reverse order. and thats it you can now get rid of that big pile of damp cloths that you had building up. Good luck
Dan Gainer-Lane
November 2007