Quote “this will probably be my main project”. Yep. Everything that Rubber says plus … tank may be ok. Start by washing it out with petrol and ball bearings (take tap and filter off). Also consider adding an external filter in your new fuel lines before the carb. Gearbox may be the reason it was left to die, or may be straightforward - you will have to get it open. Resist the temptation to turn the engine over again. Post lots of photos. Have fun.

Me too. My wife still remembers that. Last year I bought a wastebin and that came with me on the bike too. After living and working in SE Asia you realise there is basically nothing you can’t do with your bike and a few Rokstraps ™

I loved those 400/4 - it’s the sweep of the 4 exhausts which was always lovely. Such a pretty bike. Have a great holiday. The mad max 400n is good to see - happy that people still have the heart to make their bikes their own. Thanks for the pics.