That plug is BLACK.. Althogh , with a filter that old and clogged, im not surprised lol..
It could also be that black from the choke sticking or you're burning oil. Checked the level ??
Anyway, while the carb is in pieces, make sure the float bowl valve doesnt have a fine filter hiding under it. These often get wet.
It's a shame you took the carb off before checking the fuel flows from the carb drain freely too.
Anyway. Dont use degreaser on your carb. It leaves a residue. You can use petrol, or carb/parts/brake cleaner.
Blow out ALL the jets while your in there.
Take the top of the carb off and check there are no holes in the diaphram. Thats how you get the slider out too. BE VERY CAREFUL not to lose any parts and be very systematic taking it apart. Keep things in order.
The choke has three settings. Its nothing complicated or fragile. You will be able to see it open and close now the carb is off.
__________________
Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.
Last edited by *Touring Ted*; 21 Jul 2010 at 06:59.
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