DRIVE TRAIN SECTION RED PART NUMBERS INDICATE NEW PARTS 7-67 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 Primary Belts # of Pulley Teeth Belt Width Belt Teeth Combo Year & Description Part # 41 & 61 1937/1964 with open or closed primary 77500 132 39 & 62 and 1979/1984 4 speed with die cast 40 & 62 inner primary, kick or electric start (Bullseye belt +.020” longer than 77501) 1 1/2” 132 41 & 61 1965/1978 4 speed with sand cast inner 77501 primary, kick or electric start 138 45 & 68 1965/1984 4 speed with electric start 77548 144 47 & 76 1937/1984 4 speed with open primary 77502 kickstart 1 5/8” 130 48 & 68 Late 1985/Later 5 speed electric start 77533 138 45 & 68 Late 1985/Later 5 speed electric start 77511 1 3/4” 132 48 & 72 Late 1985/Later 5 speed electric start 77519 141 47 & 72 Late 1985/Later 5 speed electric start 77520 140 48 & 69 1990/Later Softail Signature Series with 77568 2” open primary 144 47 & 76 1937/1984 4 speed with open primary 77503 kickstart 141 47 & 72 1955/Later 4 or 5 speed, kick or electric 77522 3” start 144 47 & 76 1937/1984 4 speed with open primary 77504 kickstart All Replacement Primary Belts are fiberglass reinforced HTD type rubber belts (except 77511, 77548 & 77533 that are Kevlar® reinforced) supplied to us straight from the manufacturer to ensure a positive fit every time. If the needed belt length is not known,determine the number of pulley teeth combination and width for the correct belt. Life size profile of belt illustrated below. Note: Due to the numerous variables of misalignment and improper tensioning upon installation, there is no warranty on belts. REPLACEMENT PRIMARY BELTS FOR BIG TWIN 8MM 11MM 14MM # of Pulley Teeth Belt Width Belt Teeth Combo Year & Description Part # 92 31 & 47 1980/1984 5 speed closed primary 77515 new style belt drive 1 1/2” 96 29 & 44 1937/1984 open or closed primary, kick 77505 28 & 44 or electric start old style belt drive 99 31 & 47 1937/1984 open or closed primary, kick 77514 or electric start new style belt drive # of Pulley Teeth Belt Width Belt Teeth Combo Year & Description Part # 24 & 37 1937/1984 open or closed primary, kick 77523 with idler or electric start 1 1/2” 78 24 & 38 without idler 3 3/8” 85 30 & 46 1990/Later (Top Fuel Style) 77562
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