McCulloch

McCulloch 2-CYCLE ENGINES
Listed below are the various models of the McCulloch Engines and some data regarding them.
Model Engine Use Bore Stroke Displacement Carburetor Spark Plug Type Spark Plug Gap 
*Spark Plug Data

          Operating Condition: Average Driving
                               Champion Plug Number = J-6J
                               AC Plug Number = M-44C


          Operating Condition: Light Racing
                               Champion Plug Number = J-4J
                               AC Plug Number = M-42k
(SOURCE: Some of the data are from “Small Engines Service Manual”)
MC-2 Racing 2.165 1.635 6.05 Tillotson Series HL *J-6J or AC M-44C 0.025
MC-5 Racing 2.125 1.375 4.9 Tillotson Series HL J-6J or AC M-44C 0.025
MC-6 Racing 2.125 1.500 5.3 Tillotson Series HL J-6J or AC M-44C 0.025
MC-7 Racing 2.165 1.635 6.05 Tillotson Series HL J-6J or AC M-44C 0.025
MC-8 Racing 2.165 1.375 4.9 Tillotson Series HL J-6J or AC M-44C 0.025
MC-9 Racing 2.165 1.375 4.9 Tillotson Series HL J-6J or AC M-44C 0.025
MC-10 Racing 2.165 1.500 5.3 Tillotson Series HL J-6J or AC M-44C 0.025
MC-20 Racing 2.165 1.635 5.8 Tillotson Series HL J-6J or AC M-44C 0.025
MC-30 Racing 2.165 1.635 6.05 Tillotson Series HL J-6J or AC M-44C 0.025
MC-40 Racing 2.165 1.635 6.05 Tillotson Series HL J-6J or AC M-44C 0.025
MC-45 Racing 2.165 1.635 6.05 Tillotson Series HL J-6J or AC M-44C 0.025
MC-70 Racing 2.217 1.835 7.08 Tillotson Series HL J-6J or AC M-44C 0.025
MC-75 Racing 2.250 1.835 7.29 Tillotson Series HL J-6J or AC M-44C 0.025