My dryer has 2 stickers on it. (Silver)One at the back states Model G 98302 X, F no: 8402, Ser no: 04187 the other sticker on top (yellow) states Model to be a Z 910R. I can not find a working parts manual on the web. The machine was bought as a wedding gift to me in 1984 and is 29 years old. This is the very first time is has broken down. I need to find a replacement part for the timer switch please.