HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
YZ426FROCKS

Why 2 Throttle cables on my 2002 YZ426F

8 posts in this topic

I am wondering why there are 2 cables on my bike, I like the way a 2 stroke throttle feels with the little bit of play there is. I have played around with the adjustments, added a Protaper twister bearing throttle tube, which was a fantastic addition, and I still have the same feel as far as free play. Any suggestions? do I need the second cable? : :naughty:

Share this post


Link to post
Share on other sites

One cable is the return. Its pushs the throttle shut. It would feel real loose without it. You need it. You can ajust the freeplay down on the carb with the lock nut on the cable.

Share this post


Link to post
Share on other sites

I relize that, why don't 2 strokes have 2 cables? Doesn't the spring close the slide? I am not sure why they designed it this way, I am sure there is a good reason, and I would like to know what it is. :naughty:

Share this post


Link to post
Share on other sites

Since the cable in an FCR carb does not pull directly on the slide, and there are a number of places in the rather more complicated throttle linkage where something could go wrong, the engineers wanted a way to manually close the throttle if the need arose. Having had the throttle on my 450 wide open before, I think I like the idea of being able to force it shut, thank you.

Without changing the throttle twist grip to a two-stroke style part, the only thing stopping the throttle at an idle is the second cable. If you removed the closing cable, there would be no way to eliminate the slack in the grip.

Share this post


Link to post
Share on other sites

I have heard that the high vacuum can hold the slide open. Also heard that AMA has a safety rule that 4 strokes must have dual cables. Don't know for sure but it has the ring of truth to it.

Share this post


Link to post
Share on other sites
One cable is the return. Its pushs the throttle shut. It would feel real loose without it. You need it. You can ajust the freeplay down on the carb with the lock nut on the cable.

It is strictly a liability thing. If the cables are adjusted properly, the idle cable is just along for the ride. This is per Mikuni , Keihin, and various cable makers.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0