Nevertheless, it needed to be cleaned - it needed to be stripped.
It wasn't pretty but I set to work with the carb cleaner and screwdriver and it began to clean up really well. In fact, the float bowl is in superb condition compared to my military 250 Can-am. Having sat in a pond for years, the military version's had begun to rot out.
The float pivot slid out like a new one!
The float needle - looks in reasonable fettle to be fair.
Like a bought one!
The entire carb came apart as if it was put together yesterday. Not bad for 35 years old.
Take note of every jet, spring etc. Easy to lose parts so take your time and keep your work area clean. When unscrewing jets, use a quality screwdriver that fits the slot properly. Brass jets are easily damaged but I'm pleased to say the pilot jet was in superb condition.
If you have access to a compressor, blow out all of the airways/jets and check that the air is passing right through.
The only thing I need to get is the tickler mechanism as it's rotted slightly. I'll finish the cleaning/polishing when I fit it.