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I have a 1967 Triumph 500 with the single carb. It will not idle at all. Which screw is the idle screw and how many turns should I unsrew it? Thanks Bob

I bought a Triumph 500 and it will not idle. Which of the screws is the idle screw and how many turns should I unscrew it for idle? Thanks Bob

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2004 XL 1200 C won't pass emmisions, CO too high

No this is not right. I would see what size your pilot jet is , drop a number and try again. Less than one and a half turns out on the adjustment screw usually means your pilot jet is too large

Posted on Jul 14, 2009

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SOURCE: How do I adjust a Mikuni roundslide carb. Thanks

Turn the air screw and the throttle screw inward until they LIGHTLY seat. Now turn each of them outward one and one half turns. This is the factory setting. You might want to clean the carbs. After cleaning, before you put the slide back into the carb, move the clip on the jet needle downward one notch. This will richen the fuel mix and help with the bog.

Posted on Dec 11, 2009

Testimonial: "Thanks for your help. Steve"

miket756
  • 2702 Answers

SOURCE: I have a problem with the carb. Nothing wrong

sounds like the little nip snaper has turned the fule mix in to far and its running very week now run up the engine and unscrew the fule mix screw till the bike ticks over without choke being on the second screw is for tickover speed if the bike keeps stoping turn in the other screw till its reving a bit

Posted on Feb 19, 2010

Testimonial: "Thanks for the help, I have to work on it a little later but I appreciate the advice. Thanks,"

SOURCE: if my harley is back firing out the exhaust after

It may be too rich on decel...but it is more likely an exhaust leak. Do Harleys have mechanical valve lash adjustments? If you do then I would also recommend checking the clearances on the exhaust valves.

Good luck and be careful.

Posted on Mar 22, 2010

wd4ity
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SOURCE: my harley sportster the idle screw needs turning

You may have to take the breather off to get to the screw. Some of them can be difficult to get to. Standing on the right side of the bike looking down at the air filter, you can see the square looking top of the carb. On the right hand side of the carb near the top is the idle stop screw. Turn the screw clockwise to increase the idle speed.

Good Luck
Steve

Posted on Jun 02, 2010

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