The easy way, if you've just overfilled it, is to let water out via the radiator bleed valves. It takes a while as you may have to get rid of a pint or so. If this is too slow you can undo the large nut holding the valve onto the radiator but be prepared for a spillage.
John
March 2008
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
