Bores , strokes and capacities of McCulloch Chainsaws

Crankshaft PTO style 1. Tapered with keyway 2. Tapered without keyway 3. Stepped

Model .................Crankshaft No ..........Bore/stroke...........Conrod No............Capacity......................Crank pto end 1-40...........................50659...............2.125"/ 1.375"...............55009............80cc or 4.9 cu/in.........................3 1-41...........................50659...................................................55009...............................................................3 1-42...........................50659...................................................55009...............................................................3 1-43...........................50659...................................................55009...............................................................3 1-45...........................50659...................................................55009...............................................................3. 1-46...........................50659...................................................55009...............................................................3. ==================================================================== 1-50...........................50659..............2.125"/ 1.375.................55009............80cc or 4.9 cu/in...........................3 1-51...........................50959...................................................55009................................................................3 1-52...........................50959...................................................55009................................................................3 1-53...........................57830..............2.125"/ 1.375.................55009.................................................................3 ==================================================================== 1-60...........................50756..............2.125"/ 1.375..................55009............80cc or 4.9 cu/in..........................3 1-61...........................50756...................................................55009.............80cc or 4.9 cu/in .........................3 1-62...........................50756...................................................55009.............80cc or 4.9 cu/in .........................1 1-63...........................50756...................................................55009.............80cc or 4.9 cu/in .........................1 ==================================================================== 1-70...................................................2.125"/ 1.50.......................................87cc or 5.3cu/in...........................1 1-71...............................................................................................................................................................1 1-72............................................................................................................................................................ 1-75...................................................2.125"/ 1.625........................,,...........95cc or 5.8 cu/in....................... 1-76...........................58128...............2.165"/ 1.635................48905............99cc or 6.04cu/in.........................1 ==================================================================== 1-80............................55257..............2.125"/ 1.500...............55009..............87cc or 5.3 cu/in.........................1 1-81............................55756.................................................55009................................................................1 1-82............................57756.................................................55009................................................................1 1-85............................58128..............2.125"/ 1.625................48905...............95cc or 5.8 cu/in.......................1 1-86............................58128..............2.165"/ 1.635................48905...............99cc or 6.04 cu/in.....................1 =================================================================== Mac 15.......................50659a............2.125"/1.375................47903................80cc or 4.9 cu/in.......................3 D-30...........................50025..............2.125"/1.375................50015................80cc or 4.9 cu/in ......................3 D-36...........................50210..............2.125"/1.375................55009................80cc or 4.9 cu/in ......................3 =================================================================== D-44...........................51225..............2.00"/ 1.375..................51220..............72cc or 4.4 cu/in........................1 Super 44..........................................2.125"/ 1.375.......................................80cc or 4.9 cu/in.........................1 Super 44a..................55257.............2.125"/ 1.50...................55010..............87cc or 5.3 cu/in........................1 D-45.................................................2.125"/ 1.375........................................80cc or 4.9 cu/in Super 55....................55005.............2.125"/ 1.375.................55010..............80cc or 4.9 cu/in........................1 Super 55a.....................................................................................................................................................1 =================================================================== Pro Mac 105...............89222.............2.250"/ 1.635.................88623..........106.5cc or 6.5 cu/in.......................2 SuperPro 105.............89222..................................................88623..............................................................2 =================================================================== CP125.........................69346.............2.280"/ 1.835.................69250.............123cc or 7.5 cu/in......................2 CP125s.......................69346.............2.280"/ 1.835.................69250...............................................................2 Super Pro 125............85476.............2.280"/ 1.835.................85606...............................................................2 Super Pro 125c..........85476.............2.280"/ 1.835 ................88623...............................................................2 =================================================================== 200.............................50659..............2.125"/ 1.375...............55009a.............80cc or 4.9 cu/in.......................3 250.............................50659a............2.125"/ 1.375...............47782a.............80cc or 4.9 cu/in.......................1 250 late......................50659a.............2.125"/ 1.500..............47903...............87cc or 5.3 cu/in.......................1 Super 250...................60313..............2.125"/ 1.500..............47903...............87cc or 5.3 cu/in........................1 Super 250 ..................50659a............2.125"/ 1.375..............47782a.............80cc or 4.9 cu/in........................1 300.............................60313..............2.125"/ 1.375...............47903..............80cc or 4.9 cu/in.........................1 380.............................60313..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in.........................1 380a...........................60313..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in ........................1 440.............................60724..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in ........................1 450.............................60313..............2.125"/ 1.50.................47903..............87cc or 5.3 cu/in.........................1 =================================================================== 550............................64440...............2.165"/ 1.635................47903.............99cc or 6.03 cu/in.......................1 Super 550..................63440...............2.217"/ 1.635................47903...........103cc or 6.3 cu/in.........................1 =================================================================== 640............................50756a..............2.125"/ 1.375................47903.........80cc or 4.9 cu/in...........................1 650............................61860................2.125"/ 1.50.................47903..........87cc or 5.3 cu/in...........................3 660............................61860................2.125"/ 1.50.................47903..........87cc or 5.3 cu/in...........................3 =================================================================== 740............................58128................2.165"/ 1.635...............47782a...........99cc or 6.04 cu/in......................1 790.....................................................2.217"/ 1.635...................................103cc or 6.3 cu/in........................1 795............................58128...................................................47903...........103cc or 6.3 cu/in........................1 797............................66010.................2.280"/ 1.835...............66049...........123cc or 7.5 cu/in.......................1 Super 797...........................................2.280"/ 1.835...................................123cc or 7.5 cu/in ......................1 =================================================================== 840............................58132..................2.165"/ 1.635.............47782a...........99cc or 6.04 cu/in......................1 890............................58128..................2.217"/ 1.635.............47782a...........103cc or 6.3 cu/in......................1 895............................58128..................2.217"/ 1.635.............47903.............103cc or 6.3 cu/in......................1 895c..........................89222..................2.217"/ 1.635.............88623.............103cc or 6.3 cu/in......................2 ===================================================================   McCulloch Kart Engines ...Bore and stroke. Super /101 series Model ....................Crank No...........Bore / Stroke.............Conrod No..............Size............................Crank PTO type Mc 10.................55257../..48696 .........2.125"/ 1.50..............................................87cc or 5.3 cu/in..................1 Mc 20.................58128 ......................2.125"/ 1.635.........................................................5.8 cu/in..................1 Mc 30.................58128.......................2.165"/ 1.635.........................................106.5 or 6.05 cu/in...................1 Mc 40.................47751.......................2.165"/ 1.635.........................................................6.05 cu/in................1 Mc 45.................58128.......................2.165"/ 1.635.........................................................6.05 cu/in................1 Mc 70.................47798.......................2.217"/ 1.835.........................................................7.08 cu/in................1 Mc 75.................47798a.....................2.250"/ 1.835.........................................................7.29 cu/in................1 Mc 100/ 1966......47798a.....................2.250"/ 1.835.........................................................7.29 cu/in................1 Mc 101/ 1967......68898.......................2.280"/ 1.835..............66049..................123cc or...7.5   cu/in................1 Mc 101a.............69250.......................2.280"/ 1.835..............66049..................................7.5   cu/in Mc 101aa 1972....69346......................2.280"/ 1.835........................................................7.5    cu/in Mc 101b   1974....69346......................2.280"/ 1.835..............66049.................................7.5    cu/in....note 90872 ? Mc 101c...1969....69346......................2.280"/ 1.835..............66049.................................7.5    cu/in Mc 101d...1971.....69346.....................2.280"/ 1.835..............69250.................................7.5    cu/in Mc 101 mc 1973...69346.....................2.280"/ 1.835........................................................7.5    cu/in Mc Culloch 90 series engines Model....................Crank No...........Bore / Stroke...............Conrod No...............Size..........................Crank PTO type MC5 1960.........................50756..............2.125/1.375.................55009..................4.9........................................1 MC6 1961.........................48744..............2.125/1.500..................55009..................5.3.......................................1 MC7 1962.........................48586..............2.165/1.635..................48905................6.05.......................................1 MC8 1963.........................48586b............2.165/1.635..................47782................6.05.......................................1 MC9 1964.........................48586c............2.165/1.635..................47903................6.05.......................................1 MC90 1966..........................48586c...........2.165/1.635..................47903................6.05.......................................1 MC91 1966..........................48586c............2.165/1.635..................47903...............6.05.......................................1 91A...........................48586c............2.165/1.635..................47903...............6.05.......................................1 1968 91B...........................48586c............2.165/1.635..................47903...............6.05.......................................1 1970 91B/1........................48586c............2.165/1.635...................47903...............6.05......................................1 1970 91C............................48586c...........2.165/1.635...................47903..............6.05.......................................1 1972 91M/C........................89140............2.165/1.635...................47903...............6.05...............Straight grove and key 1973 MC92.........................91085............2.165/1.635...................47903...............6.05......................................2 1974 MC93.........................91085a..........2.165/1.635...................47903...............6.05......................................2 1977    Footnote this list has been compiled from my vaste array of Mc IPLS and Mike Acres excellent chainsaw site

Model # Crankshaft #.... Bore/ stroke........ Conrod No........... Capacity........... Crank pto end........head style.........outer fan cover 1-40.....50659...............2.125"/ 1.375"...........55009........80cc or 4.9 cu/in...........square  crank...removable  head ... oddball cover 1-41.....50659..............2.125"/ 1.375"............55009........80cc or 4.9 cu/in...........square  crank...removable  head ... ?? 1-42.....50659..............2.125"/ 1.375"............55009........80cc or 4.9 cu/in...........square  crank...removable head ...  standard cover 1-43.....50659..............2.125"/ 1.375"............55009........80cc or 4.9 cu/in...........square  crank.............fixed  head ...standard cover 1-45.....50659..............2.125"/ 1.375"............55009........80cc or 4.9 cu/in...........square  crank...removable head ...  standard cover 1-46.....50659..............2.125"/ 1.375"............55009........80cc or 4.9 cu/in...........square  crankk............fixed  head ..standard cover ===================================================================================================== 1-50....50659.............2.125"/ 1.375..............55009........... 80cc  or 4.9 cu/in.......square  crank...removable head ...... oddball cover 1-51....50959.............2.125"/ 1.375..............55009............80cc or 4.9 cu/in.......square  crank...head ...??               ...  standard cover 1-52....50959.............2.125"/ 1.375..............55009...........80cc or 4.9 cu/in....... square  crank...head ...??                ... standard cover 1-53....57830.............2.125"/ 1.375..............55009.......... 80cc or 4.9 cu/in....... square  crank.............. fixed head ..... standard cover ===================================================================================================== 1-60....50756..............2.125"/ 1.375............55009........... 80cc o 4.9 cu/in....... square  crank.... removable head ....mc5 closed cover 1-61....50756..............2.125"/ 1.375............55009........... 80cc or 4.9 cu/in ..... square  crank... removable head..... standard cover 1-62....50756..............2.125"/ 1.375............55009........... 80cc or 4.9 cu/in ..... tapered crank .... removable head... standard cover 1-63....50756..............2.125"/ 1.375............55009........... 80cc or 4.9 cu/in ..... tapered crank  ........... fixed head ... standard cover ===================================================================================================== 1-70......55257............2.125"/ 1.500............55009.......... 87cc or 5.3 cu/in...... tapered crank .... removable head ... mc10 cover 1-71..............................................................................................................tapered crank....removable   head ...super series cover 1-72..............................................................................................................tapered tapered crank....removable  head ...super series cover 1-75............................2.125"/ 1.625.............................. 95cc or 5.8 cu/in...... .tapered crank................ fixed head ...super series cover 1-76.... 58128............ .2.165"/ 1.635................48905...... 99cc or 6.04cu/in...... tapered crank............... fixed head ...super series cover ===================================================================================================== Model # Crankshaft #.... Bore/ stroke........ Conrod No........... Capacity........... Crank pto end........head style.........outer fan cover 1-80.......55257..............2.125"/ 1.500...........55009........... 87cc or 5.3 cu/in...... tapered crank....removable head .....mc10 cover 1-81.......55765.............................................55009........................................... tapered crank....removable head ..... super series cover 181hd....55765.............................................55009........................................... tapered crank....removable head ..... super series cover 1-82.......57756.............................................55009........................................... tapered crank....removable head .... super series cover 1-85.......58128..............2.125"/ 1.625...........48905.......... 95cc or 5.8 cu/in....... tapered crank ... removable head ... super series cover 1-86.......58128..............2.165"/ 1.635...........48905.......... 99cc or 6.04 cu/in..... tapered crank ............. fixed head ... super series cover ====================================================================================================             Mc15......50659a............2.125"/1.375...........47903.......... 80cc or 4.9 cu/in......... square  crank .. fixed  head ........... standard cover D-30.......50025..............2.125"/1.375...........50015.......... 80cc or 4.9 cu/in ........ square  crank .. removable head ... oddball cover D-36.......50210..............2.125"/1.375...........55009.......... 80cc or 4.9 cu/in ......... square  crank .. removable head ... oddball cover ==================================================================================================== D-44.......51225..............2.00"/ 1.375...........51220......... 72cc or 4.4 cu/in........ tapered crank   removable head ...mc10 cover S 44.......55005........... 2.125"/ 1.375...........55009......... 80cc or 4.9 cu/in........ tapered crank    removable head ...super series cover S 44a.....55257.............2.125"/ 1.50........... 55010......... 87cc or 5.3 cu/in........ tapered crank   removable  head ...super series cover D-45.............................2.125"/ 1.375............................ 80cc or 4.9 cu/in .......  ?????.....         removable head ...super series cover 55...........51225..........................................51219............................................ tapered crank   removable  head...super series cover S 55.......55005.............2.125"/ 1.375.......... 55010........ 80cc or 4.9 cu/in......... tapered crank   removable  head...super series cover S 55a.....55517................................................................................................ tapered crank removable head ...  super series cover Model # Crankshaft #.... Bore/ stroke........ Conrod No........... Capacity........... Crank pto end........head style.........outer fan cover PM 105....89222.............2.250"/ 1.635........ 88623..........106.5cc or 6.5 cu/in. ....tapered crank  ..  fixed head ...super series cover 101 shroud SP 105....89222......................................... 88623............................................. tapered crank  ..  fixed head ...super series cover 101 shroud ==================================================================================================== CP125.....69346.............2.280"/ 1.835.................69250.......123cc or 7.5 cu/in..... tapered crank  ..  fixed head ...super series cover 101 shroud CP125s...69346.............2.280"/ 1.835.................69250......123cc or 7.5 cu/in ..... tapered crank .... fixed head ...super series cover 101 shroud SP 125....85476.............2.280"/ 1.835.................85606.......123cc or 7.5 cu/in .... tapered crank ..  fixed head ...super series cover 101 shroud SP 125c..85476.............2.280"/ 1.835 ................88623.......123cc or 7.5 cu/in..... tapered crank  ..  fixed head ...super series cover 101 shroud ====================================================================================================            200..........50659..............2.125"/ 1.375...............55009a.............80cc or 4.9 cu/in.... square  crank  .. fixed head......... standard cover 250..........50659a............2.125"/ 1.375...............47782a.............80cc or 4.9 cu/in.....tapered crank .. fixed head.......... standard cover 250 late...50659a.............2.125"/ 1.500..............47903...............87cc or 5.3 cu/in.....tapered crank .. fixed   head........ standard cover S250........60313..............2.125"/ 1.500..............47903...............87cc or 5.3 cu/in.....tapered crank .. fixed head.......... standard cover S250 .......50659a............2.125"/ 1.375..............47782a.............80cc or 4.9 cu/in....tapered crank .. fixed  head.......... standard cover ===================================================================================================            300..........60313..............2.125"/ 1.375...............47903..............80cc or 4.9 cu/in....tapered crank .. fixed head.................. standard cover 380..........60313..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in....tapered crank .. fixed  head................. standard cover 380a.......60313..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in ... tapered crank .. fixed head.................. standard cover 440.........60724..............2.125"/ 1.50.................47782a............87cc or 5.3 cu/in ............tapered crank .. fixed head.......... standard cover 450.........60313..............2.125"/ 1.50.................47903..............87cc or 5.3 cu/in.............tapered crank .. fixed head.......... standard cover Model # Crankshaft #.... Bore/ stroke........ Conrod No........... Capacity........... Crank pto end........head style.........outer fan cover 550...........64440...............2.165"/ 1.635........... 47903............ 99cc or 6.03 cu/in.........tapered crank      fixed head.......... standard cover S550........63440...............2.217"/ 1.635............ 47903.......... 103cc or 6.3 cu/in......... .tapered crank      fixed  head......... standard cover ==================================================================================================== 640...........50756a............2.125"/ 1.375............ 47903......... 80cc or 4.9 cu/in..................tapered crank ... fixed head......... standard cover 650...........61860..............2.125"/ 1.50.............. 47903.......... 87cc or 5.3 cu/in .............. square  crank ... fixed head.......... standard cover 660...........61860..............2.125"/ 1.50.............. 47903.......... 87cc or 5.3 cu/in................ square  crank ...fixed   head......... standard cover ==================================================================================================== 740...........58128..............2.165"/ 1.635...............47782a.......... 99cc or 6.04 cu/in................tapered crank fixed  head ... super series cover 790..........58128...............2.217"/ 1.635.............. 47782a........ 103cc or 6.3 cu/in................ tapered crank  fixed head .... super series cover 795...........58128..............2.217"/ 1.635.............. 47903.......... 103cc or 6.3 cu/in................ tapered crank   fixed  head ... super series cover 797............66010............ 2.280"/ 1.835............... 66049......... 123cc or 7.5 cu/in ............... tapered crank   fixed head ... super series cover S797.......69346................2.280"/ 1.835.............. 69250........ 123cc or 7.5 cu/in ................tapered crank ... fixed head ... super series cover ==================================================================================================== 840............................58132..................2.165"/ 1.635.............47782a...........99cc or 6.04 cu/in......tapered crank   fixed  head ... super series cover 890............................58128..................2.217"/ 1.635.............47782a...........103cc or 6.3 cu/in......tapered crank  fixed  head ... super series cover 895............................58128..................2.217"/ 1.635.............47903.............103cc or 6.3 cu/in......tapered crank   fixed head ... super series cover 895c..........................89222..................2.217"/ 1.635.............88623.............103cc or 6.3 cu/in......tapered crank   fixed head ... super series cover ===================================================================================================

Engine Capacities of McCulloch Two Man Chainsaws 12-25a .......1948 - 49 .......... 130cc ... 2.250 in. (57mm) x 2.0 in. (51mm) 5-49 .......... 1949 - 52 .......... 130cc ... 2.250 in. (57mm x 2.0 in. (51mm) 7-55 ........... 1951 - 53 ......... 161cc ... 2.50 in. (63.5mm) x 2.00 in. (51mm) 99 .............. 1954 - 63 ......... 161cc ... 2.50 in. (63.5mm) x 2.00 in. (51mm) 1-92 ........... 1961 - 62 ......... 103cc ... 2.217 in. (56.3mm) x 1.635 in. (41.5mm) 1-93 ........... 1962 - 63 ......... 103cc ...  2.217 in. (56.3mm) x 1.635 in. (41.5mm) 940 ............ 1963 - 71 ......... 103cc ... 2.217 in. (56.3mm) x 1.635 in. (41.5mm)