Throttle cable - high idle?

austexjg · November 29th, 2010, 03:27 PM

So I went for a ride since it was sunny and 78 degrees outside - I have been having an issue with irratic RPM idle - most times it idles at 2000, sometimes it drops to 1300 (not the CDI issue - seperate issue not heat related).

Well, while at a light it was at 2000 RPMs while in neutral - for some odd reason I decided to add some negative pressure to the throttle - to the return side (away from me) and the idle fell to 1300. I let go of the throttle and it returned to 2000 - added negative throttle and the RPMs dropped again to 1300.

So the questions:
1. Is this normal to be able to lower the RPMs with negative throttle while at idle?

2. How do I adjust the throttle cable so that this problem is resolved?

Ken08Ninja · November 30th, 2010, 03:58 AM

Sounds like you need to lube the cables.

kkim · November 30th, 2010, 04:08 AM

also, check for proper free play on the push and pull throttle cables. complete procedure is in the service manual.

austexjg · November 30th, 2010, 09:41 AM

I guess I need a service manual - is it in the owner's manual?
How about a quick idea of the process to check the free play?

November 29th, 2010, 03:27 PM	#1
austexjg ninjette.org sage Name: J.G. Location: Austin Join Date: Oct 2009 Motorcycle(s): '09 zx6r Green/Black, (ex-)Diablo Black '09 Ninja 250r Posts: 959	Throttle cable - high idle? So I went for a ride since it was sunny and 78 degrees outside - I have been having an issue with irratic RPM idle - most times it idles at 2000, sometimes it drops to 1300 (not the CDI issue - seperate issue not heat related). Well, while at a light it was at 2000 RPMs while in neutral - for some odd reason I decided to add some negative pressure to the throttle - to the return side (away from me) and the idle fell to 1300. I let go of the throttle and it returned to 2000 - added negative throttle and the RPMs dropped again to 1300. So the questions: 1. Is this normal to be able to lower the RPMs with negative throttle while at idle? 2. How do I adjust the throttle cable so that this problem is resolved?

November 30th, 2010, 09:41 AM	#4
austexjg ninjette.org sage Name: J.G. Location: Austin Join Date: Oct 2009 Motorcycle(s): '09 zx6r Green/Black, (ex-)Diablo Black '09 Ninja 250r Posts: 959	I guess I need a service manual - is it in the owner's manual? How about a quick idea of the process to check the free play? Last futzed with by austexjg; November 30th, 2010 at 10:50 AM.

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November 30th, 2010, 03:58 AM	#2
Ken08Ninja ninjette.org member Name: Ken Location: NY Join Date: Dec 2008 Motorcycle(s): 08 Ninja 250R Candy Plasma Blue Posts: 129	Sounds like you need to lube the cables.

November 30th, 2010, 04:08 AM	#3
kkim Join Date: Nov 2008 Posts: Too much.	also, check for proper free play on the push and pull throttle cables. complete procedure is in the service manual.