SOHC.co.uk Forums > CB500/550
engine revs
deltarider:
--- Quote from: Laverda Dave on December 24, 2024, 01:55:22 PM ---That's interesting Bryan. Is this the model where one carb slide is set and the others are adjusted to match? How is fast idle set on these models?
--- End quote ---
There is no 'mothercarb' on these models; all 4 can be adjusted. There's no fast idle either. A raised idle is achieved either by manually opening the throttle somewhat, as explained in the Owner's Manual or temporarily adjust the big idle speed screw for this. The latter needs to be dialed back ofcourse once the engine is warmed up.
Morala:
Cheers for all your advice, thinking of striping the whole carb down as i don't know what the previous owner has done to the carbs regarding cleaning and setting of them, will start there and see what happens then i can take it from there again thanks for all your advice
Sesman:
Good idea. Keep us informed of your progress please.👍
deltarider:
--- Quote from: Morala on December 24, 2024, 03:42:00 PM ---Cheers for all your advice, thinking of striping the whole carb down as i don't know what the previous owner has done to the carbs regarding cleaning and setting of them, will start there and see what happens then i can take it from there again thanks for all your advice
--- End quote ---
I have always managed to do all maintenance on these carbs by just removing the floatbowls and the parts in there. Never had to separate the carbs from one another.
Back then practically nobody changed the position of the jet needles. No one did that. Jets, floats, all can be removed easily. Cleaning can be done with a straw on a carb cleaner can. I never needed ultrasonic baths.
What is posted nowadays, has a lot to do with itchy hands.
Oh... and make sure the ignition is fine. Some 90% of the fuel problems turn out to be electric...
DomP:
Is carb cleaner really enough for carbs that have dried fuel in the galleries
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