Here it is, straight from the horse's mouth: the original Carter Carburetor specs, service procedures, and technical bulletins, covering their temperamental YF carburetor. Karl Russell collected these documents, which represent an invaluable source of information for anyone trying to get the best performance from their YF (original equipment on the CJ-3B Universal Jeep.)
Click on any of the links to see a full-page reproduction of that sheet (70-160K GIF or JPEG).
Page 1 (190K JPEG) describes a steep grade carburetor field kit.
Page 2 (120K JPEG) is the diagram (left).
Page 1 -- specifications and adjustments for the CJ-3B carb.
Page 2 -- parts list for the CJ-3B carb.
Page 1 -- later edition of specs and adjustments; no illustrations.
Page 2 -- later edition of parts list, including kit to improve steep angle idle.
Page 2 -- float adjustment and metering rod adjustment.
Page 3 -- accelerating pump and fast idle adjustment.
Page 1 -- disassembly up to removing metering rod jet.
Page 2 -- disassembly completed; grouping of parts for reassembly.
Page 3 -- reassembly up to installing diaphragm housing.
Page 4 -- reassembly completed.
Bulletin No. 3-Willys, May 4, 1951: Acceleration Pump Changes
Bulletin No. 6-Willys, December 8, 1952: Stumble or Flat Spot in Model 473-475 Engines:
Page 1 -- engine tune-up
Page 2 -- checking carburetor
Bulletin No. 454-General, April 7, 1953: Pump Discharge Check Valve (find out where to hit your carb!)
Bulletin No. 456-General, May 8, 1953: YF Carburetor Diaphragm (don't let it dry out)
Thanks to Karl Russell for the Carter documentation, and Bob Westerman for the Willys Service Bulletin. -- Derek Redmond
See also YF Carburetor Tips and A Tale of Two Carbs on CJ3B.info.
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