idle control needle - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 40 (permalink) Old 03-02-2013, 04:44 PM Thread Starter
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idle control needle

as ive posted prev, the idle contol needle isnt working on my RC, it just turns and nothing happens, and the idle is set too high. im aware this may be quite a complicated job (or maybe not), but im wondering if theres any simple checks i can do/try tomo when its light that might help or even fix it?

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post #2 of 40 (permalink) Old 03-02-2013, 09:41 PM
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P.Bear... Are you refering to the dial on the right hand side down low..... Idle adjuster ???

Idle should 1250-1350 RPM's ...what is yours set at ???

-2001 Honda RC51 sp1 " Slightly Modified "
-2001 Honda 929RR Erion Edition
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post #3 of 40 (permalink) Old 03-03-2013, 04:19 AM
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Is the throttle cable over adjusted or damaged?
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post #4 of 40 (permalink) Old 03-03-2013, 09:01 AM Thread Starter
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P.Bear... Are you refering to the dial on the right hand side down low..... Idle adjuster ???

Idle should 1250-1350 RPM's ...what is yours set at ???
yeah its down the right hand side of the bike, opposite position of where the choke is.

mines idle's at 1600 and this increases to 2000 or slightly above when its gets hot in traffic. hense the big temperatures im getting in city/town traffic

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post #5 of 40 (permalink) Old 03-03-2013, 09:17 AM Thread Starter
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even if i could manually adj it to 1300 then i can leave it. got a new fan switch on the way too, so these 2 fixes will take care of the heat probs

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post #6 of 40 (permalink) Old 03-03-2013, 09:25 AM
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That is a high idle for sure..... too high.

You need to find the cause for the adjuster not working.
Means removing the tank, airbox and digging into it. I do not know why it would just keep spinning... unless the cable has snapped or broken on the inside of the housing.
That isthe only way to adjust the idle as far as I know.... that cable screws in or out a set screw on the throttle bodies.

-2001 Honda RC51 sp1 " Slightly Modified "
-2001 Honda 929RR Erion Edition
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post #7 of 40 (permalink) Old 03-03-2013, 01:37 PM Thread Starter
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removing all that stuff to get to the prob isnt something im gonna be able to handle. was worth askin tho.

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post #8 of 40 (permalink) Old 03-03-2013, 01:51 PM
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removing all that stuff to get to the prob isnt something im gonna be able to handle. was worth askin tho.
I just lubed the adjusting screw on my idle adjustment. There's a weak point where the cable attaches to the screw. That's why I lubed the screw, so it wouldn't break.

Too bad you can't get a friend to help you with some of these repairs, cause it'll cost a lot of $ if you have to hire everything out.

I had to lift the gas tank, and remove the airbox to get access to the idle adjustment screw. Getting the airbox back on can be a real PIA, because you have to re-connect 3 hoses to the bottom of the airbox and there's very little room for the fingers. I finally used a ziptie attached to the hoses, so I could grip it and fit to the airbox nipple.

John, 2000 RC51 #000100

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post #9 of 40 (permalink) Old 03-03-2013, 07:02 PM
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Is the throttle cable over adjusted or damaged?
+1 I agree

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post #10 of 40 (permalink) Old 03-04-2013, 03:40 AM Thread Starter
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my mechanic adjusted the throttle when i first got the bike cos, when revved, the throttle wasnt returning quickly to the return postition. after he serviced and gave the bike a good look over, now that memory serves, he did mention to me that the idle adj was broken.

as he was the last to adj the throttle, i doubt thats the prob. but ill give it a look over anyway.

any tips?

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