Throttle question

[Guest]

My carbs are set up apparently for a push-pull throttle. But i only have one cable hooked up, thats the way its been since i bought it and best as i can tell function fine.....does it matter? What is the bonus of the pushpull set up? Is it necessary? Thanks!

TCK

[BlackStar]

Its a safety feature in case the return spring breaks or anything else causes the slides/plates to stick, allows you to twist back to idle. I'd hook it up.

[Nessism]

Not sure if all GS bikes are this way but my VM carb 550 has pull-pull throttle cables but the BS/CV carb bike only has one cable.

Makes sense I suppose since the mechanical slide carbs have more friction thus the dual cable arrangement.

[TheCafeKid]

Hrmm...from the looks of the throttle housing on the handlebars there isnt a secondary entrance for another cable...I do know that these particular carbs were also used on many Kaws of the time, so maybe it was just a generic set up and they used pushpull. Or maybe my old 77 didnt use it and then went on later to use it. I do see in the manual that some of the setups on the later pre TSCC motors have a pushpull cable attached. Dunno.

[Nessism]

It's not Push-Pull, it's Pull-Pull (pull open, pull closed).

[chef1366]

I checked Bikebandit and it appears your bike came with the push/pull throttle so maybe it was changed out.
I've never seen a TSCC bike with a push/pull throttle unless it had aftermarket carbs.

[TheCafeKid]

huh...interesting...the equipment that is on it appears to be original 77 750B..whats the drawback of not having it?? It seems to function fine without.

[chef1366]

Not sure if all GS bikes are this way but my VM carb 550 has pull-pull throttle cables but the BS/CV carb bike only has one cable.

Makes sense I suppose since the mechanical slide carbs have more friction thus the dual cable arrangement.

This adds it up. With the CV/BS carbs the cable only actuates the throttle linkage and yours pulls up the slides and the linkage. If something sticks on yours which is more likely to happen than on a CV hold on tight!

[TheCafeKid]

This adds it up. With the CV/BS carbs the cable only actuates the throttle linkage and yours pulls up the slides and the linkage. If something sticks on yours which is more likely to happen than on a CV hold on tight!

True that i suppose. But thats what a kill switch is for...lol My step dads fuel injected Vulcan runs a push pull too...i have just never understood the concept of it. Guess i'll have to consider setting it back up.

[tone]

The so called push/pull throttles on cv's simply pull the carb butterflies open & pull them shut when you roll on or off the throttle !

If you only run one cable i'd advise fitting a small spring to positively close the butterflies when you roll the throttle off, a common mod on chops & streetfighters over here to prevent the bike running on when the throttle is closed

[49er]

The so called push/pull throttles on cv's simply pull the carb butterflies open & pull them shut when you roll on or off the throttle !

If you only run one cable i'd advise fitting a small spring to positively close the butterflies when you roll the throttle off, a common mod on chops & streetfighters over here to prevent the bike running on when the throttle is closed

Good advise. As Nessism states, they are pull/pull throttles on the VM carbs. It's a safety feature and also allows lighter return springs, provided the cables are lubed on a regular basis!! The correct routing of these cables ensures a lighter throttle feel as well!!