SOHC.co.uk Forums > CB500/550

Another carb query

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toucheturtle:
Hi,

I had my carbs rebuilt a couple of months ago but they've developed a fault. I have a CB500 K1, on first starting it wont tick over on or off choke without being revved. Once warm it runs fine and ticks over happily at 1500rpm but as you continue to ride it the idle tick over increases up to 3000rpm and has to be adjusted down.

Bryanj:
Normal, you should set the tockover to about 1150 when HOT and hang the slide when cold

NB THE CHOKE DOES NOT INCREASE THE TICKOVER LIKE ON A CAR

totty:
check the pipes heat up evenly, when mine did this it was a blocked pilot.

toucheturtle:
Hi Bryanj,

What do you mean when you say hang the slide when cold.

Cheers, Andy

Bryanj:
Hold the throttle open a bit or "hang the carb slide on the cable", comes from Brit days

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