DRIVE TRAIN SECTION RED PART NUMBERS INDICATE NEW PARTS 7-76 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Belt Drive Kits & Replacement Pulleys Year Belt Width Pulley Combo Part # 1937/1954 3” 47T-76T 77010 1955/Early 1984 2” 47T-76T 77009 1955/Early 1984 3” 47T-76T 77011 3” Wide 8mm Pulleys 2” Wide 8mm Pulley Description Part # Pulley kit for 1955/1984 with splined engine sprocket shaft fits 77009 77324 Description Part # Pulley kit for 1937/1954 with tapered sprocket engine shaft fits kit 77010 77326 Pulley kit for 1955/1984 with splined engine sprocket shaft fits 77325 77011, 77022 & 77024 • These 8mm, 47 tooth engine pulleys are direct replacement parts for Belt Drives Limited (BDL) primary belt drive kits. • All pulleys are hard anodized aluminum with cast-in steel inserts to maximize the lifespan and provide the greatest weight to strength ratio. • Each pulley includes a mounting nut and washer. REPLACEMENT FRONT PULLEYS FOR BDL BIG TWIN 4 SPEED PRIMARY BELT KITS Fits Big Twin 4 speed kickstart models with 10 spring type clutch 1937/1984 as listed 11mm Belt Drive Fits Big Twin 4 speed 1937/Early 1984 8mm Belt Drive • These belt drives have hard anodized aluminum pulleys which provide superior wear characteristics, as well as hardened clutch dogs and chrome-moly carbonized steel bearing surfaces. • Belt drives transfer power over 10% more efficiently than chains and drastically reduce noise and vibration. • 2” and 3” open kits include a solution clutch hub bearing kit. Note: Due to numerous variables of misalignment and improper tensioning upon installation, there is no warranty on belts. Year Pulley Combo Part # 1937/1954 31T-47T 77105 1955/1964 31T-47T 77106 1965/Early 1984 31T-47T 77107 PRIMARY BELT DRIVES FOR BIG TWIN 1937/EARLY 1984 Fits Big Twin 4 speed 1937/Early 1984 77105 77006 77001 77011 77009 77108 Year Pulley Combo Part # 1937/1954 39T-62T 77001 1955/1964 39T-62T 77002 1965/1978 40T-62T 77003 1979/Early 1984 41T-61T 77004 Year Pulley Combo Part # 1965/1978 41T-61T 77006 1979/Early 1984 41T-61T 77007 1980/Early 1984 41T-61T 77035 models with rear belt drive Year Pulley Combo Part # 1965/Early 1984 31T-47T 77108 Year Pulley Combo Part # 1980/Early 1984 31T-47T 77113 1 1/2” Electric Start Models 1 1/2” Kickstart Models Kickstart Models 2” & 3” Kickstart Models Year Pulley Combo Part # 1980/Early 1984 31T-47T 77114 5 Speed Electric Start Models with Rear Chain Drive 4 Speed Electric Start Models with Rear Belt Drive 4 Speed Electric Start Models with Rear Chain Drive
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