Originally Posted by Retro Grouch
1. Get it fixed pronto! If you don't, it will eventually ovalize your bike frame's head tube and there's no really adequate fix for that. You'll have to get a new bike frame.
2. There are two quite different headset styles. The adjustments are done completely differently. Can you post a photo or at lease describe, in detail, what your stem looks like?
Thanks everyone
Ihave looked at Parktool and I reckon that it is of the more modern threadless type. The bike belongs to my girl and its a British Eagle MTB.