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====== IH: Engine Mechanicals - Sub-01T ======

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====== Catalog of OEM Ironhead Flywheels ======
See also, [[techtalk:ref:engmech01k|Catalog of Aftermarket Flywheels]] in the REF section of the Sportsterpedia. \\
Click on a pic to enlarge:

  * **Pre AMF 900 flywheel marks**: ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/133054-multiple-timing-marks?t=1427992))
    * 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.

|{{:techtalk:ih:engmech:65_flywheels_by_jackprice53.jpg?direct&300|}}|
|  65 OEM Flywheel ((photo by JackPrice53 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/182301-flywheel-timing-marks-again?postid=5353281#post3894986))  |

  * **1973 1000 flywheel marks**: ((DirtyCory of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/143773-flywheel-timing-marks?t=1558035))
    * 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.