Lol - reply in wrong thread I thinkIt's easy! Remove bottom hose from radiator and have large bucket handy to gather coolant. Undo both screws at thermostat and disconnect all hoses photograph or note where all hoses go. Install new thermostat and tighten both screws to 20-25nm. Reconnect all hoses, fill expansion tank & leave lid off.
Start engine and leave to idle, once engine gets upto temp the thermostat will open and coolant level will drop, so pour in remaining coolant. (Might need more new coolant).
Put cap back on expansion bottle. Check before and after driving for next few days and top up if necessary. .......Job done!
More likely that Griffster has been told many times to replace his thermostat as it is contributing to his poor running and the only bit of advise he has taken was to replace the sparkplugs, Which was 1 entry in a long list of Service items that needs to be done to his car as soon as possible.Lol - reply in wrong thread I think
That covers it nicely. Take your time and be careful unclipping bits, wires as they can cause a bit of a problems if broken. Don't forget to refasten the earth wire which is mentioned in the instructions.The only thing might be that your car will have ribe rather than torx bits - pretty straightforward on a twinnie. Just don't overtighten the plugs.