As Indo put it - it's a very involved process, I picked up the plugs before actually thinking about how to do it - I'm not even bothering at this point. It's a very involved process, you need a gasket and likely a few hours if you've never done it before. Might be worth picking a technicians brain at a dealership or get their white-paper on it so you know you've got all the parts and tools ready
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View my fuel log 2015 Micra SV automatic: 7.1 L/100 km ... 39.9 mpg (Imp) ... 14.1 km/L ... 33.3 mpg (US) ...