Thanks Bruce, pretty sure float is ok ie no fuel inside it, have inspected it for leaks, cant see any.
Point 2, how can i make an assessment on this or do i just replace both of them?
Point 3, can anything be done about this, perhaps twist the tickler slightly away?
How to test the needle and seat you will need to remove the base cover of the carburetor and then turn it upside down with some fuel line on the inlet. Then suck on tube and put tongue on end of tube, if suction holds then the needle and seat are ok providing the tickler is not touching the float.
Note if the tickler it touching float the test is a waist of time.
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