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====== IH: Primary Drive & Clutch ======

====== Adjusting the Clutch Release ======
Here is a great thread on adjusting the clutch release on L71-later? It has some very good pictures included.\\
([[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/104388-another-clutch-adjustment-problem?t=922144|Clutch Adjustment Thread]] from XLForum.net)

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====== Clutch Diaphragm Spring - Pressure ======

**1971-1985 Sportsters**

Barnett Scorpion Clutch Kit 607-30-10871 (( http://www.barnettclutches.com/media/service_center/607-30-10871.pdf))
  * (( http://www.barnettclutches.com/media/service_center/607-30-10091.pdf))   Six 501-37-06022 springs equals 240 lbs. of spring pressure.
  * (( http://www.phaedrus.me/id155.html)) Six 501-58-06018 springs equals 348 lbs. of spring pressure.
  * (6) Six 501-70-06112 springs equals 420 lbs. of spring pressure.

**L1984-90 Sportster**

Barnett Scorpion Clutch Kit 607-30-10084 (( http://www.barnettclutches.com/media/service_center/607-30-10084.pdf))
  * MT-33-6 - - - 396lbs (six springs)
  * MT-112-6 - - 420lbs (six springs)
  * MT-113-6 - - 480lbs (six springs)


====== 1971-E1984 Clutch Parts ======
===== Thrust Bearing Collar (37879-71) =====

Dims taken by XLForum member, XLXLXL, with a metric vernier caliper. \\
{{:techtalk:ih:priclutch:clutch_thrust_bearing_collar_37879-71_dims_pic1_by_xlxlxl.jpg?direct&300|}} ((photo by XLXLXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-transmission-clutch-primary-secondary-drive/202291-bushing-collar-pressure-plate-length/page2?t=2079448&page=2)) {{:techtalk:ih:priclutch:clutch_thrust_bearing_collar_37879-71_dims_pic2_by_xlxlxl.jpg?direct&300|}} ((photo by XLXLXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-transmission-clutch-primary-secondary-drive/202291-bushing-collar-pressure-plate-length/page2?t=2079448&page=2)) \\

{{:techtalk:ih:priclutch:clutch_thrust_bearing_collar_37879-71_dims_pic3_by_xlxlxl.jpg?direct&300|}} ((photo by XLXLXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-transmission-clutch-primary-secondary-drive/202291-bushing-collar-pressure-plate-length/page2?t=2079448&page=2)) {{:techtalk:ih:priclutch:clutch_thrust_bearing_collar_37879-71_dims_pic4_by_xlxlxl.jpg?direct&300|}} ((photo by XLXLXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-transmission-clutch-primary-secondary-drive/202291-bushing-collar-pressure-plate-length/page2?t=2079448&page=2)) \\


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