I have a 4400 that has a blue belly and yellow top. It has a loader. I am trying to find information about this tractor. Part of the serial number is missing.
A 4400 is a variant of a 3 cylinder 4000. The unit code will be more helpful than the serial number. Both, plus the model code, are found on the foil tag on the underside of the hinged half of the hood as well as hand stamped on the RH side of the clutch housing.
A Ford loader had a tag on the inside of the loader boom above or below the bend where the bucket tilt cylinders' base end mount. Might still be there. It is most likely a 735 if it is a full-frame Ford loader with crankshaft driven pump.