Spring Identification

Yes yes, I know. One of the golden rules of mechanical work is to stay organized and tidy... However, here I am, spring in hand, with no idea from whence it came. Maybe a shot in the dark here but I'm hoping you folks can help me to ID it.
I just finished a full rebuild of the carbs and on my work bench there was leftover a single brass coloured spring. I dont thiiiink the spring is actually from the carbs though. (not: diaphragm spring, idle mixture screw spring, throttle return spring, spring in the piston holding needle down, synchronization screw springs, idle set screw spring). I've also been doing other little odd jobs along the way too though. So maybe it is from one of those things. I tried to show some sizes of the spring in the pictures to get a better chance of IDing it. Here's a list of oddjobs i had going on at the same time that it might be from as well:
-Full front brake rebuild, (calipers, lines, MC)
-Fuse panel replacement
-Turn signal switch cleaning and de-stickyfying
-spark plug and boot replacement
-new rubber on both wheels and necessary removal of wheel and tires from bike
-battery removal
-petcock rebuild
-vakve shim adjustment
- rear brake drum and shoe cleaning
-... Maybe some others that I've forgotten about...?

I can't for the life of me figure out where it goes. I know as soon as someonefigures it out it'll be a "duh of course" kinda moment. Hopefully you folks known what youre talking about more than me! (and that's not saying much!)
Also, it's an 82 XJ750 Maxim.

 

I know that you said it was NOT from the carbs, but it sure looks like a synch screw (or plunger rod) spring to me.........

For reference:

HCP45
OEM Hitachi HSC32/33 throttle synch screw SPRING
OL: 12.25mm
OD: 7.83mm
ID:
Wire: 1.20mm
open ends
Finish: yellow zinc plated



HCP46B
OEM Hitachi HSC32/33 throttle synch rod SPRING
OL: 12.20mm OL
OD: 7.50mm
Wire: .90mm
flat ends
Finish: yellow zinc-plated




HCP84
OEM Hitachi HSC32/33 idle speed bolt SPRING ONLY
OL: 20.00mm
OD: 7.94mm
Wire: 1.20mm
flat ends
Finish: yellow zinc-plated


It appears to be about 3/4" OL x 5/16" OD which would match the HCP84 above............

 

I was thinking that it looked like a screw spring, so I’m with Chacal.

 

Hmmm so is that the spring for the idle adjustment screw you think? Like the one that you turn by hand to adjust idle speed?
I definitely have a spring there already, but heck, maybe that one's in the wrong place... In which case Ill have a new spring to identify.... Damn it!

 

No, not specifically, there are four of these, one on each carb, between the sync screws and the er.. linkage?

 

No, there's only 3.
1st between carb 1 & 2
2nd between carb 2 & 3
3rd between carb 3 & 4

It looks like the lower spring. You should have two on each synch location. The top spring is the heavier one, the bottom spring is the lighter-weight spring.



Dave F

 

So I was pretty darn certain that I had replaced all of those in the respective spots, and all 6 of them are there and doing dandy. Those springs I'm quite confident in being the right ones too. I was pretty particular about getting those specific screws and springs all back in the same order and in their respective positions. Plenty of notes and pictures taken of those areas.
The spring I've got seem like it would be too big to fit in there... And it has a fairly high spring rate to it as well, heavier than what I think those sync screw spring use.

 

Agreed. Yours is of a much larger diameter.

 

And too long......those springs are only about a cm long (barely 1/2 inch). Must be from some other project

 

Allmost looks like the spring in the brake master cylinder to me....
Being so shiny this may be a new one from the kit you used, did you re use the original?
Did the kit come with two springs for different models and you have a spare?
IDFK other than that

 

After reading descriptions from chacal, I agree with it being from the idle speed screw, adjust or knob.
It's probly too small for the brake master.

 

It's not the idle speed spring. Idle screw springs are MUCH heavier

 

I think it is a spring put there by his wife just to bug him.

 

Hmm..ill have to take a look into both of those. Any idea if the idle adjustment screw can come.out with the carbs on the bike...? I would love to not have to extract them yet again. Not a fun job.

 

Idle adjustment screw will fall right off when you take the idle adjust meant screw put. Here is a pic of one in place. You can see it's much heavier than what you showed.