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If you search the FCR you’ll find a lot of posts about the bogging and other finicky issues with it.
To be honest, look up how to clean a carb, and you may have ‘fun’ trying.
Alternatively before you do any tear-down, three or more of the larger (125ml?) cans of Liqui Moly 4T Additive. Get below a half-tank and put two or three in so it’s very concentrated and then idle the bike for a while to clear the float and get it running through the carb.
Then go ride the bike for a half hour somewhat spirited. After running for a few litres, fill up and put the final can in and see how it goes for the next couple rides.
This is a tried and tested ghetto fix before tearing into a carb. It has worked well for a lot of gummed up carbs at my local mechanics. I did it on two or three bikes of my own (XJ600, CBR600 even the Blackbird’s FI) with great success. On the Blackbird the moment I felt a hesitation it fixed the problem, and it saved me a carb clean on the XJ and CBR.
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pdlouche
skinny
It's annoying moved as I had a great shop around the corner with next to nothing labour. Now I've none.