Tilly carb numbers

[SpaayDawg]

Got another 041av, some people's kids I tell ya. Anyone know what saw had a Tilly HS181 on it? The only carb I've seen on an 041, av, super, fb, has been HS138. This 181 has a smaller venturi, and smaller neck feeding into the intake than a 138. Thanks in advance.

 

[nanuk]

181 or 118?

I can find reference to a 118... but not a 181....

sorry, but I cannot find anything further.

 

[pioneerguy600]

Tillotson 181A,B and C were used on the Stihl 041 Farm Boss, it had a 9/16" venturi.
Pioneerguy600

 

[SpaayDawg]

It is an (HS181 A 619) but the A looks like it has an "X" over it.

I'm wondering why the venturi and final bore diameters are noticeably different.

 

[SpaayDawg]

monday morning bump