Walbro Carb Tool

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Been cutting across mine with a hack saw, always have a pocket screw driver with me, just in case I need to adjust a carb, tool stays in tool box in barn. Not going to take the chance of losing it out in the bushes or in the woods. You can put a thin wall piece of tubing on the needle so its easier to keep your screw driver on it while adjusting to keep from vibrating off.

Steve
 
What's up with the centers of the screw heads?
Why does it look like a pin in there?

Have you taken a scribe or something similarly small and tried pushing on them?
I'm just wondering if we have another anti-tamper contrivance here.
 
Here is a drawing of what I'm wondering might be involved
--IF-- the centers of the screw/needles have a pin in them
https://www.pivotpins.com/products/be-positive-lock-pins.html
The ball would align with an internal slot that limits the rotation of the screw.
Thus you have another style of adjustment limiter.

But It could be nothing to the funny spot in the centers.
I just find it odd to see that extra machine work and not know why it's there.

Now a worse idea would be if the needles are first run in
and then the pin is pressed in
so as the push the ball outward into the slot
and thus traps the screw in the body.
 
The "tit" from parting off stock wont normally have a recessed grove like these needles appear to.

all my years in (small job or fabrication machine work)
I've not seen a part off cut look like that.
Be it screw machines or turret lathe, etc.

Now who knows, But could they be an upset formed head and those are
marks from the die?

I'm curious to see what they look like when removed.
It could be a different way of fabricating the needles
by some sort of two piece method.

Curiosity is working on me!! (and thinking too much)
But of course I'm limited to just armchair guessing about things
until we see them out of the carb.
 
I had to do the same thing, bought the Amazon kit. My Remington polesaw was so lean out of the box it wouldn't even rev up
that is exactly what this one is doing.

Brian
 
needles look machined and identical. I am nearly certain that nib is from parting the needle off the bar.
0edd56c2fb803dc384794cf3becbc9c8.jpg


Brian
 
tool, the 4 pack was 10 bucks 2 day amazon prime. now I have them for future.

Brian
 
all of the carb gaskets are gooey and stuck. the blue diaphragm is very stiff and deformed, no wonder it runs like crap. Now to find a kit for a WT1116 and tell my buddy STOP USING REGULAR GAS!

Brian
 

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