DRIVE TRAIN SECTION RED PART NUMBERS INDICATE NEW PARTS 7-111 1 2 3 4 5 6 7 8 9 10 11 CONTENTS ELECTRICAL FRAME FRONT END CONTROL WHEEL ENGINE DRIVE TRAIN FUEL EXHAUST GENERAL REFERENCE 7-112 7-122 7-115 REAR CHAIN DRIVE PARTS FOR BIG TWIN CHAIN SPROCKET HARDWARE 7-116/117 7-116/117 7-115 7-112 REAR CHAIN DRIVE PARTS FOR K MODEL & SPORTSTER Chain PRIMARY COVER PLUGS FOR SPORTSTER Model & Year Description Rpls. HD# Hex Head Allen Head Sportster 1971/1976 Oil Filler Plug 34742-71 78510 78575 Clutch Adjusting Plug 37880-71 78511 78576 Sportster 1977/1985 Oil Filler Plug or 34742-77B 78512 78577 Clutch Adjusting Plug Sportster 1986/1990 Oil Filler Plug or 34742-86 & 78558 78578 Clutch Adjusting Plug 34745-87 Allen Hex 75400 75401 75402 • The Hex Head Plugs have a 15/16” head and come with O ring. • The Allen Head Plugs require a 1/2” allen wrench. TRANSMISSION SPROCKET NUT LOCK 1954/1985 75409F (Rpls. HD 35050-52) TRANSMISSION SPROCKET NUT 1936/1992 4 & 5 speed 75401 (Rpls. HD 35211-36) SUPER NUT WITH SEAL 1936/1984 4 speed 75402 (Rpls. HD 35211-36) Seal stops oil leaks from main drive gear. NUT LOCK 1936/Early 1983 75400F (Rpls. HD 35216-36) Primary Cover Plugs & Chain Drive Parts TRANSMISSION SPROCKET NUT 1971/Early 1984 75412 (Rpls. HD 35047-71A) 1991/1992 5 speed 75401 (Rpls. HD 35211-36)
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