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October 23, 2023 Service bulletin

Milwaukee-eight transmission shift drum update

Harley-Davidson technical service bulletin M1611 for 2017-2019 Harley-Davidson Flhtcu, 2017-2023 Harley-Davidson FLHX and 2017-2023 Harley-Davidson Flhtk and others.

Bulletin number
M1611
Component
Power train
Summary
SERVICE BULLETIN M1611: MILWAUKEE-EIGHT TRANSMISSION SHIFT DRUM UPDATE. PURPOSE: This bulletin informs dealers of a transmission shift drum running change to all variants of the Milwaukee-Eight powertrain. Starting on October 4, 2023 all Milwaukee-Eight CVO, Police, Softail, Touring and Trike models will be assembled using a common shift drum. The new shift drum (Part No. 33900265) is replacing the old shift drum (Part No. 33900172). The new shift drum was developed to include the "D" shaft on the end to interface with the Gear Position Sensor on 2023 CVO Street Glide (FLHXSE) and Road Glide (FLTRXSE). For all other Milwaukee-Eight models, the bearing door has been modified by adding a pocket to accept the "D" shaft of the new shift drum.

Owners of these vehicles have filed 89 complaints in the transmission category.

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