Pick the best carb for MS260 Pro...

[paragonbuilder]

Yup. I installed it and it wouldn't hold any pressure. Put the old one back in and it's fine.


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[DND 9000]

Rebuilding my 260 carb and it's got a wte549?

Your carburetor is a WTE 1. The 1 is standing below the WTE.

 

[paragonbuilder]

Your carburetor is a WTE 1. The 1 is standing below the WTE.

Ah ha! Thanks!!


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[drf256]

Deets,

A new 194 will set you back $38. A new 403B around $18, but you'll need to modify your tank handle for the mix screws. Venturi should be the same. Runs just as well.

 

[drf256]

http://www.arboristsite.com/community/threads/zama-carb-mod-cliff-note-version.275905/

Great thread on ZAMA carbs on the AS.

 

[bikemike]

Rebuilding my 260 carb and it's got a wte549?

As I was installing the diaphragm for the metering lever I noticed this

Seems to me that would be like drastically changing the metering lever height. Any thoughts?


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Might need an extra gasket for that.

 

[Basher]

Might need an extra gasket for that.

Thick gasket.

 

[paragonbuilder]

So how do you know where to set the metering lever with this? Just need to try it and adjust?


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[Basher]

So how do you know where to set the metering lever with this? Just need to try it and adjust?


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Was the gasket that came with the kit a much thicker one than normal?

 

[Basher]

Deets,

A new 194 will set you back $38. A new 403B around $18, but you'll need to modify your tank handle for the mix screws. Venturi should be the same. Runs just as well.

The Tillotson HU is a problematic carb anyway, that plastic module is a known trouble source for these HU carbs.

 

[Deets066]

The Tillotson HU is a problematic carb anyway, that plastic module is a known trouble source for these HU carbs.

Thanks, that's good to know

 

[stihl_head1982]

The Tillotson HU is a problematic carb anyway, that plastic module is a known trouble source for these HU carbs.

I think I learned this the hard way. Why am I always learning this way ...

 

[paragonbuilder]

Was the gasket that came with the kit a much thicker one than normal?

I'm not sure. However with the metering lever set flush with the carb body and the new gasket it would not hold any pressure. So it wasn't thick enough... I put the old set back on and it's running fine.


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[DND 9000]

So how do you know where to set the metering lever with this? Just need to try it and adjust?

Hi paragonbuilder

Have a look at the file attached for adjusting the metering lever height of the WTE carburetor. It`s the same procedure also for a Walbro WTF carburetor on other models.

 

[drf256]

Hers the mod I did on the AF. 50 micron screen.

The baffle is getting carved out next.

In retrospect, I'd only glue the perimeter next time.




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[drf256]

Rebuilding my 260 carb and it's got a wte549?

As I was installing the diaphragm for the metering lever I noticed this

Seems to me that would be like drastically changing the metering lever height. Any thoughts?


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Pretty scary Dan. Looks like a mistake anyone could easily make.

 

[paragonbuilder]

Hi paragonbuilder

Have a look at the file attached for adjusting the metering lever height of the WTE carburetor. It`s the same procedure also for a Walbro WTF carburetor on other models.

Interesting... I thought walbro's all were set flush... And that's how it was...
Maybe it was kitted before and done wrong?
So seems to be running good, I have not cut with it yet, but seems doggy on spool up. Could this be why?
What does this setting actually change in regards to function of the carb?


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[paragonbuilder]

Hers the mod I did on the AF. 50 micron screen.

The baffle is getting carved out next.

In retrospect, I'd only glue the perimeter next time.

View attachment 14768View attachment 14769


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What size mesh did you use?


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[DND 9000]

So seems to be running good, I have not cut with it yet, but seems doggy on spool up. Could this be why?

Maybe your L needle needs to be a little bit more open, that gives normally a better acceleration.

 

[drf256]

What size mesh did you use?


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50 micron