Throttle Cable / rev counter

[JoshTimmins]

as i got tomorow off work im gnna finish what i need to do on my bike.. including a new throttle cable.

Just wanted to know if it is easy to swap over.. and also if there are any tips, or things to watch out for, etc

Also, i have a rev coutner on the new speedo.. jst wanted to know how i conenct this up, or if it is possible for it to be connected to my bike..

.. the old speedo had one but the previous owner said he jst didnt have the cable to connect it.

Thanks

Josh

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Edited March 14, 2009 by JoshTimmins

[Guest]

if its hard to se where it routes through ... either a strip bits off bike and take photos ..... or tie a piece of string between the cables ( make sure cable is the right way round and pull it through using the old one .. make sure when adjusting cable to leave yourself some freeplay adjustment on handlebar adjuster ( wind in adjuster but leave small slackness when adjusting carb end) when fitted make sure revs do no increase when turning full lock either way ......... make sure throttle grip returns when let go .....

[JoshTimmins]

if its hard to se where it routes through ... either a strip bits off bike and take photos ..... or tie a piece of string between the cables ( make sure cable is the right way round and pull it through using the old one .. make sure when adjusting cable to leave yourself some freeplay adjustment on handlebar adjuster ( wind in adjuster but leave small slackness when adjusting carb end) when fitted make sure revs do no increase when turning full lock either way ......... make sure throttle grip returns when let go .....

 

Thanks TimR

i also jst edited my previous post remember somthing else i wanted to ask if you know the answer to that much appreciated!

Josh

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[JoshTimmins]

Ive got a little free time and want to change the throttle cable over.

Now ill be ok til i get to the carb end where im unsure really how to take it apart, and wht to look out for.

If anyone can help, much appreciated

Josh

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[Guest]

you shouldn't need to take the carb apart, the cable runs into th side of it with a bracket, you can see it on you picture above..

as for the rev counter cable, i would get a haynes manual for a start, but they tend to go somewhere on the engine, so look around and see if theres a threaded piece of metal that looks as if somethings missing (note: it should look similar to the bit on the speedo drive that you screwed the cable into, except the inside will be different, also if you connect the cable to the rev counter and run it through the back of the forks, the length should give you an idea of whereabouts to look..

this may be helpful

http://www.hoc.org.uk/gallery/press/200 ... CM125C.pdf

Picture of expected location for Revcounter Drive..

[JoshTimmins]

the cable goes into the top of the carb where you see the scrw bit with japan underneath.

tht cable u see behind is the choke.

Josh

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maybe this pic helps taken from the other side.

[Guest]

Thanks, Josh, realised that at scond glance, it happens when you're looking at an unfamiliar bike, mine goes elsewhere to operate four carbs otherwise i'd have 4 cables?????? lol

what about the Tacho / Rev counter drive, have you found it? do you have one? The pics i have seen all show two clocks,

[Bill_on_a_bike]

Josh you don't need to take the carb apart completely atall to change the cable over, you just need to unscrew the top of the carb, where the throttle cable goes in. That bit with the thumb grips will twist right off. Onces it's undone pull up on it and the throttle cable, and the throttle slide and throttle needle arrangement will come out of the carb, this is fine.

You need to compress the big spring pushing the throttle slide down (this is what shuts your throttle). With the spring compressed look on the bottom of the throttle slide near where the needle comes down to see the ball end of the throttle cable. When you can see it, slide it sideways alone the grove it must have gone in through, this is hard to explain but very obvious once you're looking at it. Basicly, you want that ball end out sideways, up the side of the thottle slide and off the slide completely. Once this ball end's off though, the spring will be free to launch the throttle slide through the air, so keep a good grip on it and let the spring out slowly.

Then you need to disconnect the carb cap (the top bit you unscrewed) from the throttle cable, my carb was shot, not my throttle cable, so I never bothered, but I think it unscrews from underneath? Have a look can't be too hard.

Refitting the thorttle slide to the cable end and spring and all the jazz, is an exact reversal of the removal procedure. This shouldn't screw up your carb settings either.

Hope this helps bud, good luck

Bill

[JoshTimmins]

Thanks, Josh, realised that at scond glance, it happens when you're looking at an unfamiliar bike, mine goes elsewhere to operate four carbs otherwise i'd have 4 cables?????? lol

what about the Tacho / Rev counter drive, have you found it? do you have one? The pics i have seen all show two clocks,

 

Yeah my bike seems to be a wierd one when i talk to most people bout it, but i guess comes with the age of it.

The Rev counter .. not as of yet.. the clocks tht were on there when i got the bike the previous owner put them on and he said he hadnt got the cable to connect but all it needs is a cable.

im lookin at buying a manual for it soo will let you know lookin at the engine i may have found where it might go in, and my dad said i could use his cable if needed and provoiding it would work (1981 XJ550 seca any ideas whether it would?)

 

Josh you don't need to take the carb apart completely atall to change the cable over, you just need to unscrew the top of the carb, where the throttle cable goes in. That bit with the thumb grips will twist right off. Onces it's undone pull up on it and the throttle cable, and the throttle slide and throttle needle arrangement will come out of the carb, this is fine.

You need to compress the big spring pushing the throttle slide down (this is what shuts your throttle). With the spring compressed look on the bottom of the throttle slide near where the needle comes down to see the ball end of the throttle cable. When you can see it, slide it sideways alone the grove it must have gone in through, this is hard to explain but very obvious once you're looking at it. Basicly, you want that ball end out sideways, up the side of the thottle slide and off the slide completely. Once this ball end's off though, the spring will be free to launch the throttle slide through the air, so keep a good grip on it and let the spring out slowly.

Then you need to disconnect the carb cap (the top bit you unscrewed) from the throttle cable, my carb was shot, not my throttle cable, so I never bothered, but I think it unscrews from underneath? Have a look can't be too hard.

Refitting the thorttle slide to the cable end and spring and all the jazz, is an exact reversal of the removal procedure. This shouldn't screw up your carb settings either.

Hope this helps bud, good luck

Bill

 

Thanks Bill i have day off tomorow would take a look jst didnt want to brake anything

much appreciated both of yous

Josh

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[Guest]

the seca cable would probably not work, it being of yamaha origin, also the length and ends may be different, internal or external threads, angle of input, etc.. would be best to get a proper replacement and be done with it..

[JoshTimmins]

the seca cable would probably not work, it being of yamaha origin, also the length and ends may be different, internal or external threads, angle of input, etc.. would be best to get a proper replacement and be done with it..

 

ive searched for a cable and cnt find one anywhere .. leadin me to think it doesnt have one.. but maybe i should try a cb125 of same sort of year as they are pretty much same engines, etc? my understanding anyway

Josh

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[Guest]

the seca cable would probably not work, it being of yamaha origin, also the length and ends may be different, internal or external threads, angle of input, etc.. would be best to get a proper replacement and be done with it..

 

ive searched for a cable and cnt find one anywhere .. leadin me to think it doesnt have one.. but maybe i should try a cb125 of same sort of year as they are pretty much same engines, etc? my understanding anyway

Josh

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yes, as its the same engine then i'm sure this would work, normally the cables would nee to be longer as the cb doesn't have high rise bars, but as its to the clocks the distance should be much the same,(subject to forklength, but it wouldn't be much more) or you could look for the CM250..

[JoshTimmins]

Today i have half done it.. lol.

The switch housing screws need to be drilled and taken out cos their head is all screwed

Dad will do that tonite or tomorow soo all good there

Carb end: Ive switched cables over but need to do the switch side before i can put the cable n spring n stuff back in properly

Thanks guys

Josh

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owners manual has been orderd

[JoshTimmins]

update: Bike is now rideable

speedo has been changed over! throttle cable changed over! rev couunter we have hit a problem, the previous owner has cut off the old tacho wire instead off taking it out (due to the screw being all mashed up) but no biggy there.

Went on a lil ride today bike feels 1000x times better, smoother, even faster hehe.

Even dad had a go and noticed the difference!

Thanks for all the help!

Josh

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