Throttle - Auto Close

[utadventure]

What causes the throttle to return to the closed position once the grip is released. The new '88 I have doesn't return by itself. It's like having a throttle lock on the control.

 

Any suggestions?

 

Dave

[MiCarl]

The springs on the carburetors snap the butterflies closed and that in turn pushes/pulls the cables to move the throttle grip.

 

You may have sticking cables. Makes sense to lube them.

 

Also, if the cables are too tight they bind in their casings and will prevent the throttle snapping back. You should have just a bit of free play at the grip before the butterflies start to move.

[skydoc_17]

The adjustment for the throttle "free play" is on the left side of the bike, (as you are sitting) Turning the nut on the end of the cable will add a bit of free play. I have had good luck splitting the "Kill switch Housing", flooding the cables with WD40, to loosen things up and then using a good cable lube to get some thicker oil in there. SAE 30 motor oil works well also but is hard to get in there. Most dealers sell a lube set-up with a small straw or "stinger" to inject the oil into the cables. This is something you want to address, a sticking throttle cable can cause big trouble in intown traffic!

Hope this helps,

Earl

[Condor]

Try lubing everything you can see with DeepCreep.. same folks that make SeaFoam.... Even the carb linkage, choke connections, and cables. Keep working the throttle and choke while you're doing it. Things will get easier as you go, and the throttle will start to return all by itself....

[Dano]

You mean you gotta let go of the throttle every once in a while??

[utadventure]

You mean you gotta let go of the throttle every once in a while??

 

It's like having a thottle lock on there in addition to the cruise control. Like was said, it can make for some interesting driving in town...

 

Dave

[GeorgeS]

Open the throttle houseing, at the grip, lubricate everything there.

 

See what you have then.

 

At the left fwd carb, Inspect the exposed section of the Pull Cable, make sure there is NO FRAYING OF THE CABLE!! IF so, order a complet new set of cables !!!

 

Lossen the lock nut, and adjust there at end of cable, make sure you have at least 1/8 inch of Freeplay, before the Carb Linkage starts to move. After you get the cables freed up, then reset this adjustment.

 

Also, if your bike has Cruz Control, then the " Throttle Joint " might need to be opened up and cleaned and lubed. ( SEE PAGE: 7-137, of service manual, for block diagram of the cable set up showing the " throttle joint " .

 

IF: the throttle joint is causeing your problem, you will have to go in thru the Upper left side fairing to work on it. ( Its located, left side, under the upper fairing )