F130 Carburator

[EZ]

Just as an interest, I found a spare carb in my junk pile.


Spare
Typical Zenith model 68 carburetor

Type: 68-7
Vehicle/Machine Manufacturer: Wisconsin
Manufacturer Number: L63A
Service Carburetor Number: 12544

My original:
Typical Zenith model 68 carburetor

Type: 68X7
Vehicle/Machine Manufacturer: I.H.C.
Manufacturer Number: 366462R91
Service Carburetor Number: 12522

The bottom half is identical on both. But the venturi are not the same size.
What difference will the venturi size make if I use the Spare top on the tractor?

The picture is a bit of an optical illusion as the original carb is on bolts and is setting closer to the camera making it appear larger.

[havoc1482]

My guess would be difference in fuel flow rate. The spare was probably designed for a different engine that maybe spun at higher RPMs

[EZ]

Research shows the spare carb is for a walk behind 12.5hp tractor.

Ordered rebuild kit for original 12122.

Thanks for stopping by.

[Don McCombs]

I believe that those venturis are changeable/interchangeable.

[EZ]

Don,
The venturi on the spare will not fit in the original top.
Almost, but too tight.
I like the spare top as it is cleaner.
Not sure of performance differences, but as you can see the number inside is not a match.