Harry, Good Morning. The IH CC manuals I have all came from the Manuals section of this site. In the case of my Model 149, the Service Manual I downloaded was IH publication no. GSS-1464 Revision 2 dated September 1979 for IH CC models 86, 108, 109, 128, 129, 149, 169, 800, 1000, 1200, 1250, 1450, & 1650 Chassis & IH Equipment (which consisted of the mower, the blower, and the 1A tiller). There is nothing in the GSS-1464r2 manual about servicing the engine, only its removal and installation; hence my resort to the Kohler Service Manuals available from their site. The Operator's Manual (available for download in the Manuals Section for "Tractors and Rotary Mowers" Models 86, 108, 128, 129, 149, and 169 "Serial No. 507,000 and above", publication no. 1 084 322 R1. Rev. 1. 6-74) does not include anything about servicing the carburetor. So I was using the the best information available to me at the time.
For the Model 149, I did order the Engine Service manual you describe from Binder Books, publication no. GSS1465-1 W/Revision 1 dated August 1979, and as you say, in Section 2 "Fuel System," it gives instructions for adjusting the high speed and idle mixture screws, shows a blow-up of the carburetor on p. 2-3 under the head "Disassembly", and instructions on setting the float level upon "Reassembly" (p. 2-4). The float depicted in the blow-up (or exploded view) corresponds to the "early design" shown in pictures I posted earlier; the "curls" are formed in an outward direction and there is no "second tab." I'm not sure if I checked there or not. I had expected to find rebuild instructions with the "kit" I purchased.
I went back and checked the versions and dates for the Kohler Service Manual I referenced earlier, and it notes on the last page that, "This publication replaces ENS-575" and that "Form" TP-2379 was issued 4/90 and revised 11/92. Which leaves open the question of when the float was redesigned: it may have come out well after IH ceased producing tractors. Since the new part replaces the older one, it seems to be backwardly compatible; at least it's working fine in my tractor.
So, I'll stop berating Don for not following the manual, and I'll pay more attention to my sources of information in the future. I still think the new design is an improvement to the older one and I would encourage everyone to consider adopting new design the next time they do a rebuild on a carburetor.
I apologize if I offended anyone with my strident tone; I thought I reminding everyone of existing data (RTFM), when in fact I was introducing new information. (But it still pays to read the manual
)
Now, a question for you: would you consider a carburetor with the "new and updated" float design to be a 100-point restoration, or would a fellow have to test and use an older style float?
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