Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
M1490
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1490 (V 24.8.8): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version 24.8.8. Release Date: Week of August 5, 2024. New Features for Harley-Davidson vehicles: Advanced Module Replace for 2021 and later Revolution Max; 2023 and later CVO Touring; and 2024 Street Glide (FLHX), Road Glide (FLTRX). New Features for LiveWire vehicles: Updated calibrations for 2024 S2DM EV1/ EV6; 2024 S2MH EV1; and 2024 S2DM, S2MH. Changes: Added Hand Control Module (HCM) (Part No. 71500522A and 71500536A) for reflash support.
M1313
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1313: VRSC FUEL PUMP SERVICE PROCEDURE REVISION. PURPOSE: This bulletin is to inform dealers of a change to replace fuel system parts on 2002-2006 VRSC models. Fuel pumps (Part No. 62109-01, 62111-04 & 62109-01A) and suction side fuel filters (Part No. 75170-04, 75170-04A) are no longer available as individual components. See PAB1022 for current options Parts and Accessories (P&A) engineering has developed.
M-1215B
Service Bulletin/Repair Instructions
STEERING STEM NUT/WASHER. THIS BULLETIN IS TO INFORM DEALERS OF UPDATED PARTS AND SERVICE PROCEDURES TO ELIMINATE LOSS OF CLAMP LOAD ON UPPER STEERING STEM NUT. *PE