• Used in the Screaming Eagle Package line from HD as an Evolution XLH HI-FLO Carburetor & Air Cleaner.
• It came in flange mount and spigot mount styles. ¹⁾
  • The first ones were called Andrews Flowmasters and used a rubber adapter flange and a hose clamp to hold the carb on to the manifold and a K&N air cleaner held on by a hose clamp.
  • Later issues of this carb (called Screaming Eagle) were cast with a flange to allow the carb to bolt to the manifold. ²⁾
    The spigot mount looks a lot like the original Lectron mount from H-D. ³⁾
• Adjustable Accelerator Pump stroke
• Incorporated a special intake manifold to carb spacer that had to be drilled and tapped (1/4 x 28) in the side for included Voes connection adapter
• Required a 1987 replacement style intake manifold for 1988 and up models
• Required possible grinding of the right rear corner of the front cylinder head, due to interference with the carburetor throttle pulley and cable guides, for proper clearance ⁴⁾
• Markings include:
  • Keihin, 27F8, HG13, Harley Davidson and Screaming Eagle. ⁵⁾
  • Screaming Eagle (27FA ED17) ⁶⁾

⁷⁾

*in carburetor

^{8) 9)}

^{10) 11)}

• Accelerator pump rod length: A number of Screaming Eagle carb kits (91731-85A), packaged during March of 1988 (3/88 date code), contained carburetors with accelerator pump rods that were too short. The incorrect pump rods were only 2.35“ long, end to end, and completely disabled the accelerator pump and caused the engine to stumble upon fast acceleration. The correct length pump rod (27374-88) is 2.55”. ¹²⁾
• Dealers were to check their parts stock and replace any pump rods that measured short and also check the pump rod length on any motorcycles that exhibited a stumble upon acceleration.