the most common fault is bushes worn on motor. To change change bushes unplug machine,undo 3 screws at rear to remove lid, motor is clearly visable, bushes are located at rear of motor. to remove bushes dissconect single wire and use small screwdriver to push down release catch and slide out old bushes these are inexpensive to buy. insert new ones. on each bush there is a small release catch which you bend backwards about 45degrees, replace single wire on each bush and replace lid. that should work.
Iworna bushout 2, October 2008