McCulloch Mc 101 MC  ... 1973 Bore 2.280 ... Stroke 1.835 ... Displacement 7.5

Block part number ........................................................no Fixed head ...................................................................no Copper o-ring head gasket ...........................................yes Flat alloy head gasket ..................................................no Large PTO bearing (pn 6204) ........................................no Oilier mount nub ..........................................................yes Bolt-in transfer port cover  ............................................no 3rd port intake ..............................................................no 2 Finger ports intake port .............................................yes Factory 9  port  transfer ports .......................................no Machined recess for rod bolt clearance .......................no Cast-in recess for rod bolt clearance ...........................yes Ribs in exhaust port ....................................................no Recess for square exhaust gasket ...............................no Left or right PTO crank thread .................................... left

Mc 101 MC 400171  12- IPL 89753 Owners Manual 85205 Production Period 4/73 to 6/75