CB125 stuck throttle

[Dj Hunny]

So, i took off my stock handlebar and put on the clubman bars...and it looked totally awesome. Well I took it off and re-installed it correctly (the 1st install i had the handlebar sitting the opposite direction for easier riding postion as I was teaching my bro how to ride). Well when I turned it around to the correct position everytime I started the bike it would automatically be revving really high.

So I figure it was something with the clutch cable being pulled or something, i tried and tried and no matter what it wouldn't work. So I eventually gave in (after a couple days) and put the stock handlebar back on except now it still does the same thing. It'll will rev really high, after fidgeting with it some more I finally got it on, now it starts fine but my throttle is stuck 

Can someone help me please, let me know what I could've accidently done without realizing. Thanks. 

[natedawg120]

Check for throttle action at the carb while twisting the grip, if it moves correctly check the carbs.  If it doesn't move at all i think the cable may not have been connected quite right and the nub on the grip end is coming loose from the retaining holes in the grip.

[Dj Hunny]

Check for throttle action at the carb while twisting the grip, if it moves correctly check the carbs.  If it doesn't move at all i think the cable may not have been connected quite right and the nub on the grip end is coming loose from the retaining holes in the grip.

The action from the throttle to the carb is normal. When I have the throttle and control not mounted to the bar it starts and accelerates fine. But once mounted it either starts already revving or my throttle won't move? 

I will check the carbs as suggessted though, i never thought of that because I always thought it was something with my throttle

[Jay_wolf]

Had the same problem once before on a mtx 125 , the housing of the needle in the carb, there was a little bump where it would slot in , when its not correctly in , the throttle wouldnt turn , once adjusted ,and fits in snug , it ran perfect

[yamahonkawazuki]

check cable routing, watch teh butterflies, whiel twisting handle side to side, see if tehy move while doing this

[tt_four]

yep, 95% of the time this means the throttle cable needs routed better, and it happens a lot when people switch handlebars. The housing isn't actually solid inside, it's just a long metal coil, like a skinny non-flexible spring. If the housing is pulled too tight it'll stretch slightly, which means the throttle cable is now too short, and will have the same affect as if you had the choke on, all the time. Does the idle change as all if you turn the handlebars back and forth from full lock on the right to full lock on the left?

The first time this happened to me it didn't rev high instantly, It was fine with the front end straight as well as to the left, so I didn't notice when it was on the sidestand or when I started riding straight, but as soon as I tried to take the first slow right hand turn the bike tried to take off without me because it pulled the throttle cable too tight.

[Cal Price]

Most likely after re-routing the problem is with the Bowden cable as mentioned above, check route for pinches, twists and too-tight turns, get some grease into the cable.

[Dj Hunny]

yep, 95% of the time this means the throttle cable needs routed better, and it happens a lot when people switch handlebars. The housing isn't actually solid inside, it's just a long metal coil, like a skinny non-flexible spring. If the housing is pulled too tight it'll stretch slightly, which means the throttle cable is now too short, and will have the same affect as if you had the choke on, all the time. Does the idle change as all if you turn the handlebars back and forth from full lock on the right to full lock on the left?

The first time this happened to me it didn't rev high instantly, It was fine with the front end straight as well as to the left, so I didn't notice when it was on the sidestand or when I started riding straight, but as soon as I tried to take the first slow right hand turn the bike tried to take off without me because it pulled the throttle cable too tight.

it does seem like my throttle cable is too short...but not he idle doesn't change, just constant rev or not able to rev at all. i'm going to go in the garage tonight and do everything everyone suggessted...hopefully i can fix it in time to ride it this weekend.

[Dj Hunny]

i don't know how to watch the 'butterflies' or the 'Bowden' cable, because i don't know what that means   
sorry newbie tuner to motorcycles.  But i hope to learn a lot. 

[Cal Price]

Bowden Cable is mearly a term for the "hollow" cable with the wire running through it.

[Dj Hunny]

Bowden Cable is mearly a term for the "hollow" cable with the wire running through it.

gotcha. thx. 

[Cal Price]

Hope it works out well.
One thing that has always puzzled me about problems and human nature is that when confronted with something technical we often dive straight in looking for complex reasons when more often than not the problem is the blindingly obvious.
Check the simple stuff first especially is something goes wrong just after a job or alteration, in this case the most likely is that the cable got crimped during moving/re-routing - maybe lubrication required - don't start taking the carbs to bits untill you have eliminated the exterior factors - In my experience carbs are like roofs - best left alone unless you have to fix them.

[Dj Hunny]

Hope it works out well.
One thing that has always puzzled me about problems and human nature is that when confronted with something technical we often dive straight in looking for complex reasons when more often than not the problem is the blindingly obvious.
Check the simple stuff first especially is something goes wrong just after a job or alteration, in this case the most likely is that the cable got crimped during moving/re-routing - maybe lubrication required - don't start taking the carbs to bits untill you have eliminated the exterior factors - In my experience carbs are like roofs - best left alone unless you have to fix them.

i opened up the carb to see if the wire was not in place, but it looked ok from my end? 
I never took the throttle cable off the bike, but I'm going to check today if maybe there's a kink somewhere from the stem to the throttle. I have no clue what's wrong with it and I'll see if it maybe just needs some lubraction. I'm so frustrated, I really want to take her for a ride.