IH: Engine Mechanicals - Sub-01C


Catalog of OEM Ironhead Flywheels

See also, Catalog of Aftermarket Flywheels in the REF section of the Sportsterpedia.
Click on a pic to enlarge:

  • Pre AMF 900 flywheel marks: 1)
    • The single vertical line is the 45° advanced timing mark for the front cylinder.
    • The double vertical lines are the 15° advanced timing mark for the front cylinder that's used to set retarded kick start timing.
    • The dot is TDC front cylinder.
    • The AMF Sportsters used double dots for rear advanced timing.
65 OEM Flywheel 2)
  • 1973 1000 flywheel marks: 3)
    • The vertical line is advance mark for the front cylinder.
    • The single dot is TDC for the front cylinder.
    • The double dot is advanced timing for the rear cylinder.
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