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How to move the throttle stopscrew?

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
I have a 1980 Gs550LT.

I recently cleaned the carburetors according to the guides found on this sight. I replaced all the orings, and intake boots.

These last 2 days I put the bike together and proceeded totry to start it. Was not getting spark on 2 and 3 cylinder. Apparently it was a bad connection because after disconnecting connectors for testing, I had spark.

A spray of starting fluid got it running but the idle was high. I turned the main throttle stop knob counter clockwise and the bike was redlining. I tried to use a 15 mm 12 point ratcheting wrench to turn the knob since I could not move it by hand.

The trouble is I am not sure I am moving the know is there some trick or special tool to use?
 
Well first off you turn the bog knob counter clockwise ( Lefty Lower..Righty Revving ) to lower the idle....which you did without results so that leads me to point two. Secondly you need just a ever so slight amount of cable slack so the idle will in fact go low enough before the cable prevents it.
 
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There is no trick.
icon_shrug.gif


It should have been tested during the bench sync, right after the "rebuild". :-\\\

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so it should move by hand?

I will have to check cable slack the next time I work on it.

thanks.
 
Yes..as you turn the knob, the spring will retract the throttle linkage and lower the RPMs...if you have hooked up the spring anyway.

Get some good cable slack from the adjustments on the cable where it hooks to the cable holder on the carbs and there should also be a turn buckle arrangement up at the throttle grip as well for even more slack if need be.
 
I have never messed with the carbs and was not sure the purpose of the knob.

Wished I had checked it before putting them back on. Oh well, practice makes perfect or so they say.
 
goggles said:
I have a 1980 Gs550LT.

I recently cleaned the carburetors according to the guides found on this sight. I replaced all the orings, and intake boots.

These last 2 days I put the bike together and proceeded totry to start it. Was not getting spark on 2 and 3 cylinder. Apparently it was a bad connection because after disconnecting connectors for testing, I had spark.

A spray of starting fluid got it running but the idle was high. I turned the main throttle stop knob counter clockwise and the bike was redlining. I tried to use a 15 mm 12 point ratcheting wrench to turn the knob since I could not move it by hand.

The trouble is I am not sure I am moving the know is there some trick or special tool to use?
Click to expand...

goggles said:
I have never messed with the carbs and was not sure the purpose of the knob.

Wished I had checked it before putting them back on. Oh well, practice makes perfect or so they say.
Click to expand...

Did you clean the carbs you said in your first post or have you never messed with them?
 
I forget the need to be clear in these matters. I had never messed with the carbs until I recently cleaned and put them back in bike.
 
Confused?

Confused?

I recently followed the guide on this site to clean my carbs. Up until that time, I had not messed with the carbs.

Does that clear it up?
 
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spray Blaster on the threads of the knob, then wait an hour. spray more. the knob should turn EASY
 
I thought I had bench synched them. I set a paperclip under the butterfly valve of each carb and adjusted the individual screw so the valve just rested on the paperclip
 
Give the poor dude a break here...

What they are trying to tell you is that your inexperience has lead you to take some shortcuts that are yielding poor results.

Investigate the carb tutorials found on basscliff's site and you may see where you went wrong (and some have hinted at it thus far).

The good/bad news here is you will gain more experience -- when you do the carbs again.

experience has taught many here (including many of the posters to this thread) that there are steps to take and that none may be skipped to avoid the dreaded re-rebuild.

Good Luck
 
After looking over the tutorials, I think I need to go back through the bench sync.

Thanks to everyone for their help.
 
Wingsconsin said:
Give the poor dude a break here...

What they are trying to tell you is that your inexperience has lead you to take some shortcuts that are yielding poor results.

Investigate the carb tutorials found on basscliff's site and you may see where you went wrong (and some have hinted at it thus far).

The good/bad news here is you will gain more experience -- when you do the carbs again.

experience has taught many here (including many of the posters to this thread) that there are steps to take and that none may be skipped to avoid the dreaded re-rebuild.

Good Luck
Click to expand...


Good on you!
I know I have been there.
 
Wingsconsin said:
Give the poor dude a break here...

What they are trying to tell you is that your inexperience has lead you to take some shortcuts that are yielding poor results.

Investigate the carb tutorials found on basscliff's site and you may see where you went wrong (and some have hinted at it thus far).

The good/bad news here is you will gain more experience -- when you do the carbs again.

experience has taught many here (including many of the posters to this thread) that there are steps to take and that none may be skipped to avoid the dreaded re-rebuild.

Good Luck
Click to expand...

Not trying to be hard on the guy. Sometimes you need to creep up to something in order for the person to think about it. If I had just said "You need to bench sync your carbs again" the likely response would have been "I already have". Pointing out that the #3 carb is adjusted differently, and given his current issues with the main throttle adjustment, made him think about it and go back to the tutorial to correct his own mistakes.

It's a little like proof reading your own material... You keep reading it and seeing it exactly like you thought it was supposed to be while in reality it's wrong and you don't see it.

Yes, we all make mistakes. Lord knows that I sure have.
 
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