How can I fix my kenwood multipro food processor;FP920 series ?

My kenwood multipro food processr,FP920 series was given to me as a gift. It was bought almost twoo years ago but hardly used because I had an old one which I used all the time. When I decided to use its juicer,it didn't start. I took it to where it was bought(Good Guys) but they didn't help because the warranty had expired. I was also told that if you don't use it it breaks down which didn't make sence to me. so I ask you to help me by sending the manual to try to fix it.
Regards
Jeanne