Author Topic: Push/Pull throttle cables - CB750F2  (Read 1573 times)

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Offline MrZxp

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Push/Pull throttle cables - CB750F2
« on: February 28, 2006, 12:05:22 AM »
When I picked this bike up from the PO he included a throttle cable he'd just bought for it, I've assumed it to be the right one, (it looks the same as in the parts fiche at crotchrocket.com), now I'm not so sure.... it's the "a" throttle (that's the pull one)? I just can't seem to get enough length out of it to go all the way around under the cam on the carbs that it's supposed to attach to.... does anyone know how much free length there is supposed to be in this cable?
When I measure from the end of the sheath to the ferrule (cable fully pulled through of course) there is approx 8cm protruding. On the "b" cable (which I have just purchased myself) there is 9cm, and that is not enough either, which I tried, just in case I'm trying to attach the cables the wrong way round!? So, I'm thinking, wrong cable? Or am I doing something wrong?

Any and all help appreciated!

Cheers, Phil
09 Boulevard M90
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Offline KB02

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Re: Push/Pull throttle cables - CB750F2
« Reply #1 on: February 28, 2006, 05:53:01 AM »
okay, this may sound alitle a silly question, but do you have the adjustmenst all the way our on the cables? Having the cable hooked up to one side with the adjustments all the way in will not allow you to be able to connect it to the other side properly. Justa thought.
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Offline scondon

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Re: Push/Pull throttle cables - CB750F2
« Reply #2 on: February 28, 2006, 08:37:27 AM »
The 77-78 750F cables are a different length than the earlier CB750's so make sure you have the correct ones. Honda identifies your bike as a 77-78 750 "Supersport". The "pull" cable has two adjuster nuts at the end, the "push" cable has only one. Insert the cables in the throttle(handlebars) and make sure the "pull" cable adjuster is screwed all the way in. Insert the "barrel" end of the "pull" cable into the slot of the carb THEN route the cable THEN slip cable body into adjuster arm. Insert "push" cable "barrel" end into slot of the carb THEN twist throttle THEN route push cable and slip into adjuster arm. Tighten, adjust cables, done.

     If you follow this process, and your cables ARE to short, you will get the cables routed but will not be able to slip them in the adjuster brackets. Hope i've had enough coffee this morning and that this is making ANY sense :)
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Offline MrZxp

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Re: Push/Pull throttle cables - CB750F2
« Reply #3 on: February 28, 2006, 10:04:19 AM »
okay, this may sound alitle a silly question, but do you have the adjustmenst all the way our on the cables? Having the cable hooked up to one side with the adjustments all the way in will not allow you to be able to connect it to the other side properly. Justa thought.

Not a silly question! Have to allow for the obvious! But, yes, this is with all the length I can get out of the cable at the carb. Thanks for the thought....

Scondon - I have been following/doing your method, it would not surprise me that the PO had bought a pull cable for a model other than the F2. This cable is just way too short. Thanks for confirming that I have indeed been trying to do things properly!

Cheers, Phil
09 Boulevard M90
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Offline scondon

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Re: Push/Pull throttle cables - CB750F2
« Reply #4 on: February 28, 2006, 12:35:49 PM »

Scondon - I have been following/doing your method, it would not surprise me that the PO had bought a pull cable for a model other than the F2. This cable is just way too short. Thanks for confirming that I have indeed been trying to do things properly!

Cheers, Phil

Good deal :)  I should have both types of cables('76 and '78) hanging in my garage. I'll compare the difference when I get home and post it here if that helps.

       This site is just "thick" with Aussies, good to see New Zealand "representin'   ;)
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Offline MrZxp

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Re: Push/Pull throttle cables - CB750F2
« Reply #5 on: February 28, 2006, 08:26:04 PM »
A comparison would be most helpful indeed.... I would then be able to categorize the cable I have at the moment properly, in preparation of getting rid of it!


Yes, well, us Kiwi's are a rare breed so you don't get to see too many of us too often...  ;)  Thanks for your kind words!

Cheers, Phil
09 Boulevard M90
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Offline scondon

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Re: Push/Pull throttle cables - CB750F2
« Reply #6 on: February 28, 2006, 10:43:14 PM »
OK, here's what I found in comparing the two types. I pulled each cable all the way through on the carb end and measured the difference. The 77-78 "pull" cable protrudes 6 centimeters more than the '76 "pull" cable. The 77-78 "push" cable protrudes about 15mm more than the '76 "push" cable. So if you are trying to fit '76(or earlier) cables you would find the "pull" cable to be waaaaay too short and the "push" cable just a bit short.

    Ooops, just reread your first post. 77-78 cables measured "from sheath to ferrule":

Push- 9cm

pull- 13.5cm

'76 cables:  8cm for both
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Offline MrZxp

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Re: Push/Pull throttle cables - CB750F2
« Reply #7 on: March 01, 2006, 12:27:27 AM »
Ah, well that definitely confirms it then.... I am in possession of a '76 cable, (or it's equivalent). Thanks for doing that scondon, much appreciated - I shall now order the correct item from my parts man....  :) (I wonder if he'll take this cable as part payment...??????  :P)

Cheers, Phil
09 Boulevard M90
SOHC4 Member #3336