CBR 125.. Look no hands!! Throttle issue :/

[DOGFACED]

Hi all gf bought her first bike after doing her CBT.
A CBR 125.
I rode it home for her last night and it has an issue with the throttle?

Well this bike if you rev it slightly is will continue to rev sometimes up to the redline and it quite often will stay at high revs until either you turn the key off or it drops back down on its own accord if it does.

Also when riding when you change gear it will rev right up to the redline at random points.
Plus even if you throttle off it will still be under power and carry on riding forward as you were.

If anyone has any suggestions I would massively appreciate it.
Cheers
____________________
A2 License...................Order of Wheels:
Piaggio Ape50 . '04 Derbi GPR50 . '01 TW125 . '97 GSXR400 . Sexy 2001 R6 . '58 MT-03
Current: . Husqvarna TE410 . RGV250. Ducati 600ss.

[JoeDougieDoug...]

Sounds like your throttle cable is a little too tight. Is it fairly stiff to move too? Does it snap back to 'point zero' when you let go of it?

Follow the throttle cable back until you reach a small 'nut' on it, just loosen that off a bit and then check. Nothing wrong with it I don't think.
____________________
CBT Passed - 22 / 10 / 11 >> Theory Passed - 16 / 02 / 2012 >> Mod 1 Passed - 07 / 03 / 2012 >> Mod 2 Passed - 18 / 05 / 2012.

[haroman666]

My first thought is a manky throttle cable. Remove the cable and see what it's like to move through the outer casing.
Also check the casing for kinks or splits.
If not that then it may be a carb issue (If it's 04 - 56 plate). If it's the FI version then me no know.
____________________
The mistresses: 2000 Honda CBR600f, 2000 Honda VTR1000

[JoeDougieDoug...]

Yeah, Haroman has a point... if the revs are running too high on idle, could be a mixture problem.
____________________
CBT Passed - 22 / 10 / 11 >> Theory Passed - 16 / 02 / 2012 >> Mod 1 Passed - 07 / 03 / 2012 >> Mod 2 Passed - 18 / 05 / 2012.

[Nope.]

If its carbed it could be that theres an air leak. Spray some WD40 on the inlet and if it revs up then its leaking.
____________________
Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400

[Vincent]

Could it be that the throttle is too far onto the bar? If you know what your doing, disconnect the throttle cable and see how the grip works on its own - make sure it's moving freely. Then try pulling the cable and see if it's sticking.

Whatever it is, it needs sorting before your GF uses the bike.
____________________
Space Is Deep