MS241C Carb Issues

[nohoff]

I got some problems with the acceleration pumps on the MS 241C.
I dontz know if this was old or new Version but the symptoms were similar to those MS 200 carb failures.

 

[blsnelling]

@blsnelling

which version do you mean? The MS 241 was updated in late 2014 from serial (us production) 501 125 787 and got a carb change to Zama. Parts from the newer version are not compatible to the older version, there were a lot of changes.

You talk from the newest version. I think you mean the Zama ones. There are 3 different ones depending on the exact version of the MS 241.

The carburetor you have depends on your version (see my serial break). Before that serial Walbro carb (older version of the MS 241), from that serial, Zama carb (newer revised MS 241). So if you have the Walbro carb, you can only use the Walbro carb on your saw.

Mine is way before the break at 298083834.

 

[nohoff]

 

[Duane(Pa)]

Would a WT194 fit on this 241?

These boyz are Mtronic... so, nah

 

[RI Chevy]

Ahhh. I C

 

[00wyk]

Mine has a slight stumble coming off idle if left to idle for a bit. I'll have to check my SN. I think it's prior to the changes. If that many changes were made, perhaps I should just buy a new saw, swap my cylinder, and sell mine stock/used.

Did you ever pull the carb and get the actual factory Walbro part # off of it?
The 300 series Walbro on my 241 runs much better than the 400 series did.
But it coulda been the solenoid the whole time...who knows. I am a bit reluctant to test it now that it works so well.

 

[00wyk]

A pic of the wtf 331 1b(maybe made in 2014?), which replaced the wtf 408 from 2012

 

[DND 9000]

You have a WTF-1B carburetor. The 331 is not the model description, it can be a production code as far as I now.

Edit: I did some research and the 331 on that carb is the production date (week 31 in 2013), the one with 408 is (week 08 in 2014).

 

[Funky sawman]

Stupid walbro....... who calls their carb a W.T.F what the fark folks lol

 

[00wyk]

You have a WTF-1B carburetor. The 331 is not the model description, it can be a production code as far as I now.

Edit: I did some research and the 331 on that carb is the production date (week 31 in 2013), the one with 408 is (week 08 in 2014).

Hrm, let me check something and get back to you...

 

[00wyk]

Hrm, let me check something and get back to you...

So it looks like the old carb was losing it's solenoid, or having solenoid issues then.
I went and I got my serial - #176419811 +
I think I got this second hand in 2015 or so. SO that 408 could certainly be a 2014 manufacture.
The frustrating part is I was told the WTF with the 331 mark was a 2015 manufacture when I bought it

 

[Spladle160]

Why do you think the saw isn't a 2015? It's unlikely but Stihl could have thrown in an old carb from the bottom of the barrel. They could have been shipped an ope carb or it could have been swapped out at some point. But yeah, it's probably not a 2015 saw.

 

[00wyk]

Why do you think the saw isn't a 2015? It's unlikely but Stihl could have thrown in an old carb from the bottom of the barrel. They could have been shipped an ope carb or it could have been swapped out at some point. But yeah, it's probably not a 2015 saw.

That wasn't what I was trying to say. I was simply confirming his carb information looks right and sharing my serial for confirmation.
My point was I purchased this 331 carb in 2019 and was told it was manufactured after 2015.

 

[00wyk]

BTW are these WTF solenoids easy to service?

 

[DND 9000]

It can`t be a saw from 2015. In 2015 was the revised version already released (came near the end of 2014). Also the revised version got Zama carburetors.

My point was I purchased this 331 carb in 2019 and was told it was manufactured after 2015.

It can be a in stock spare part carburetor.

BTW are these WTF solenoids easy to service?

These solenoid valves are used on different machines. If they leak inside, replace them.