Zenith Adjustable Main Jet – Fits John Deere 300/301 Marvel TSX904 – AT22996

Fine-tuning your tractor's carb?

This Zenith adjustable main jet is what you need.

It fits John Deere 300 and 301 models with the Marvel TSX904 carburetor.

It's also compatible with AT22996 and AT23000 series.

This lets you dial in the fuel mixture perfectly for better performance.

Brand new, ready to screw in.

If your tractor's been running rich or lean, this little valve makes all the difference.