Zenith 11275 D is one of the Zenith universal carburetors. Consider yourself fortunate to have it, as it is one of the very best single carbs to put on a 235.

And while I try to avoid any advertising in the questions/answers portion of this forum, since others have mentioned me, yes, I do offer a rebuilding kit.

573-392-7378 (9-4 Mon-Tues central time).

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop