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Throttle Cable Adjustment

S

seth25

Well-known member
I want to check and set my throttle cable free play. Are there any tricks or tips? Make sure the butterflys are seated all the way? Make sure engine RPM does not change when moving handlebars? Anything else?

Thanks
 
That's pretty much it. The cables have some initial stretch with use so most of us had to adjust after first couple hundred miles and hasn't really been an issue since. TPS is really touchy so we would get that cut-out when whacking the throttle problem that was solved by tuning out the cable slack. New Pro owners should make note of this as there were quite a few chasing their tails going after injector issues when it was just a slack cable and the TPS doing it's job.

Have FUN!

G MAN
 
My throttle has a lot of play in it as well. Tonight I am planning to figure out how to tighten it up. Is is pretty easy or what all is involved?

If the cable has quite a bit of play then its porbably actually taking away from the sled performance because it can't be pinned wide open right?
 
My throttle has a lot of play in it as well. Tonight I am planning to figure out how to tighten it up. Is is pretty easy or what all is involved?

If the cable has quite a bit of play then its porbably actually taking away from the sled performance because it can't be pinned wide open right?

Right. You just pull back that rubber boot (on the throttle cable just down from the flipper) and there is an adjustment lock nut and long adjuster nut. You can do them by hand as they have grip surfaces and are not hexagonal nuts. Unloosen the lock nut and turn the adjuster nut counterclockwise until you take out the slack (but not too tight so as you affect the idle). Tighten lock nut and pull back rubber boot. Real simple to do on the trail even.

Have FUN!

G MAN
 
Use a feeler gauge, 0.010" - 0.030" of slack, between the lever and the throttle block. Then you know.
 
Where do you put that feeler gauge. Near the pivot or near the cable. Do you wait until your throttle safety switch has clicked to do this? Seems overly complicated.

I set my throttle cable at wide open. Thumb to the bar, push on cable exposed and adjust out the slack. So far so good.

I don't understand how the TPS to TSW interface would care at all how much slack you have unless your throttle cable is sticky enough to not return to closed after your thumb has released the lever.

What am I missing here?
 
Feeler between block and lever, top, bottom, front of cable. The tension from the throttle bodies closes the TSS at the pivot. Too much slack allows the throttle bodies to start to open without the TSS circuit closed. Just what I've personally experienced. Can't speak to the TPS. This is a Poo specification at setup and checkup, page 2.21 of the shop manual.
 
This has been reviewed before, but answered with more catuion.

It would be advisable to monitor your TPS output while making this adjustment, as to not eff-up your idle/throttle response.

IIRC if you start to pull the butterflies/slides up off idle while taking the slack out of the cable, and then readjust the idle screw to drop idle, you will get a hellacious off idle stumble.

Do a search, this has been covered since 2010 on here.
 
This has been reviewed before, but answered with more catuion.

It would be advisable to monitor your TPS output while making this adjustment, as to not eff-up your idle/throttle response.

IIRC if you start to pull the butterflies/slides up off idle while taking the slack out of the cable, and then readjust the idle screw to drop idle, you will get a hellacious off idle stumble.

Do a search, this has been covered since 2010 on here.



Have you actually tried the search function here? You might as well just scroll through the regular boards because it simply doesn't work. I have been searching for the possible cause of my WOT stumble. the "search" is garbage at best.

I think I am going to take some slack out of the cable and maybe disable the safety switch. Hopefully I don't end up having to replace injectors with 600 miles on them...
 
To try to eliminate the TSS, either tape the switch pin and try it, or make an inline resistor to use for testing purposes.

I made a resistor to take along riding with me. If i start getting any more bogs or cutting out, plug it in, and if i goes away ill know it was TSS related!

I wouldnt do this without a tether however, cause just as likely as a TSS problem, may very well be a sticking throttle, and the TSS actually doing its job...

:)
 
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