2022 Harley-Davidson RA1250 TSBs
63 Technical Service Bulletins across 11 categories
Categories
Engine
22 bulletinsSERVICE BULLETIN M1720 (REV A): PAN AMERICA ELECTRONIC CONTROL MODULE (ECM) UPDATE.
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PURPOSE: Initial release 3/3/2026. Revision A. 3/30/2026. Updated: Purpose for Service Bulletin and Required Dealer Action. Adjust information for 2024 models. Purpose for Service Bulletin. This bulletin informs dealers that there is an Electronic Control Module (ECM) update available for 2021-2025 RA1250, RA1250S, RA1250ST and RA1250SE on Digital Technician II (DT II). The update improves engine function by addressing engine operation after a cold start by improving idle stability and improved Quickshifter function. For 2021-2024 models the Body Control Module (BCM) and ECM update must both be completed. If only the ECM is updated, a nuisance Diagnostic Trouble Code (DTC) U040000 will populate and not be able to be cleared. Because of this, the BCM update should be done first and then the ECM.
SERVICE BULLETIN M1695 (REV A): PAN AMERICA BCM AND ECM UPDATE.
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PURPOSE: Revision A. Updated: Purpose for Service Bulletin, Updated engine operation details after a cold start. This bulletin informs dealers that there is a Body Control Module (BCM) and Electronic Control Module (ECM) update available for 2021- 2023 RA1250 and RA1250S on Digital Technician II (DT II). Also an ECM update is available for the 2024 RA1250, RA1250S and RA1250SE on DT II. The update improves engine function by addressing engine operation after a cold start by improving idle stability.
SERVICE BULLETIN M1679: AFTERMARKET EXHAUST HEADER DEBRIS.
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PURPOSE: Initial release. This bulletin informs dealers that Harley-Davidson has identified instances of premature engine failure due to abrasive particle wear, specifically from debris inside new aftermarket exhaust headers. Recent evaluations have identified that certain newly manufactured exhaust headers may contain residual hard particles that, if not removed prior to installation, can migrate through the engine system and cause accelerated component wear or severe mechanical damage.
SERVICE BULLETIN M1490 (V 26.3.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 26.3.2. Release Date: Week of January 28, 2026. NOTE Software version (26.3.2) will need to be manually installed only if current software version of DT II is (26.0.2). Refer to bulletin M1713 for instructions. New Features: LiveWire. Changes: Revolution Max and all MY2026 vehicles. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.
SERVICE BULLETIN M1490 (V 26.1.5): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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). New Software Update Version 26.1.5. Release Date: Week of December 15, 2025. NOTE: Software version (26.1.5) will need to be manually installed. Refer to bulletin M1713 for instructions. New Features, Changes: 2026 Revolution Max Vehicles (RH975, RH975S, RH1250S, RA1250S, RA1250ST), 2026 Police Body Control Module (BCM), and Tire Pressure Monitoring System (TPMS). NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.
SERVICE BULLETIN M1490 (V 26.0.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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). New Software Update Version 26.0.2. Release Date: Week of November 18, 2025. New Features, Changes. 2026 Vehicles, 2025 Softail and LiveWire S2DM/MH/AP EV3. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.
SERVICE BULLETIN M1490 (V 25.8.9): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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). New Software Update Version 25.8.9 Release Date: Week of September 2, 2025. Changes: LiveWire 2024 S2MH: Removal of incorrect Electro Hydraulic Control Unit (EHCU) reflash support; EHCU Module (Part No. 41100123): Addressed issue where module became unrecoverable after failed reflash attempted. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.
SERVICE BULLETIN M1695: PAN AMERICA BCM AND ECM UPDATE.
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PURPOSE: Initial Release. Purpose for Service Bulletin. This bulletin informs dealers that there is a Body Control Module (BCM) and Electronic Control Module (ECM) update available for 2021- 2023 RA1250 and RA1250S on Digital Technician II (DT II). Also an ECM update is available for the 2024 RA1250, RA1250S and RA1250SE on DT II. The update improves engine function by addressing a condition that causes stalling after a cold start.
SERVICE BULLETIN M1490 (V 25.8.7): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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). New Software Update Version 25.6.4, Release Date: Week of August 19, 2025. Includes New Features and Changes for the Models & Model Years listed. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1165 (REV A): H-D SYN3 SAE 15W50 / SAE 50 AVAILABILITY.
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PURPOSE: Revision (A) * Updated: Summary, Update table. This bulletin informs of the availability of the SYN3 New Improved Formula, a dual weight SAE 15W50 / SAE 50 Motorcycle Oil. The new formula transitions into inventory as the old SYN3 20W50 product inventory is depleted. Availability varies by SKU and region. The original SYN3 20W50 will be obsoleted when the transition is complete.
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1165: H-D SYN3 SAE 15W50 / SAE 50 AVAILABILITY.
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PURPOSE: This bulletin informs of the availability of the SYN3 New Improved Formula, a dual weight SAE 15W50 / SAE 50 Motorcycle Oil. The new formula transitions into inventory as the old SYN3 20W50 product inventory is depleted. Availability varies by SKU and region. The original SYN3 20W50 will be obsoleted when the transition is complete.
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1157 (REV A): 2024 PAN AMERICA TOP CASE MOUNTING FITMENT.
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PURPOSE: [Revision A. Updated: Purpose for Parts and Accessories Bulletin, Summary and Thread Inspection.] Address part availability and compatibility. To inform dealers that the Top Case Mounting Kit (Part No. 53000800A) is now available and fits all 2021-2024 Pan America NON-CVO models (RA1250, RA1250S). The previous kit (Part No. 53000800) remains available and fits 2021 through 2023 Pan America (RA1250, RA1250S) vehicles.
SERVICE BULLETIN M1615: 2024 REVOLUTION MAX CHARGING SYSTEM CHANGES.
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PURPOSE: This bulletin informs dealers of updates made to the charging system on 2024 Revolution Max powered vehicles. For 2024, the charging system has been updated to improve electrical output at idle and low Revolutions Per Minute (rpm). Maximum output has remained the same. The following components have been changed: Stator and Stator Screws: The stator has increased in thickness, adding more wire length and longer stator screws; Cooling Manifold: The cooling manifold needed to be machined deeper to accommodate the stator size change; Alternator Cover Screws: The screws were shortened to prevent breaking through the new cooling manifold; Rotor Assembly: The magnets were moved, re-centering them over the new stator windings. NOTE: Using any of these parts in a 2021-2023 Revolution Max motor can result in catastrophic engine failure. NOTE: All Parts Catalogs have been updated to show correct service part numbers.
SERVICE BULLETIN M1608: REVOLUTION MAX VVT SERVICE KIT.
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PURPOSE: This bulletin informs dealers that an improved Variable Valve Timing (VVT) harness connector and terminals are going to be used on 2024 Revolution Max powered vehicles. The old connector and terminals used on 2021-2023 Revolution Max powered vehicles will no longer be supported. Various kits have been created to support dealers in the change over of these parts.
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1143: SCREAMIN EAGLE CARB APPROVALS.
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PURPOSE: To inform California dealers about the new California Air Resources Board (CARB) approvals. Screamin' Eagle Quickshifter and Screamin' Eagle Extreme Flow 55mm Intake Manifold.
SERVICE BULLETIN M1573 (REV C): REVOLUTION MAX TROUBLESHOOTING TIPS.
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PURPOSE: Revision. Informs dealers about Revolution Max powered vehicles. Updated purpose of the bulletin to call out 1 repair per Vehicle Identification Number (VIN). This bulletin informs dealers that Harley-Davidson has specific areas of interest while troubleshooting on Revolution Max platform vehicle built before July 1, 2023 for issues on starting or Diagnostic Trouble Codes (DTCs). These areas of interest should be used in conjunction with the Service Manual and Electric Diagnostic Manual while troubleshooting. This information should be used as an aid to current troubleshooting steps and not a replacement. Best practice is to first troubleshoot current DTCs, in order of priority if there are multiple. The labor code associated with this bulletin will no longer be redeemable for motorcycles built after July 1, 2023. As a reminder, the repairs called out in this bulletin should only be executed 1 time per VIN. If there is a need to repeat a specific step in the process, please file a claim for that repair only.
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1132: 2022 SCREAMIN' EAGLE REVOLUTION MAX EO APPROVALS - CARB.
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PURPOSE: To inform California Harley-Davidson dealerships that select Screamin' Eagle accessories have been granted Executive Order (EO) approval by California Air Resources Board (CARB) for use on select 2022 Revolution Max powered vehicles. Markets Affected: California only.
SERVICE BULLETIN M1573: REVOLUTION MAX TROUBLESHOOTING TIPS.
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PURPOSE: Revision. Updated Motorcycles Affected and Required Dealer Action. This bulletin informs dealers that Harley-Davidson has specific areas of interest while troubleshooting on the Revolution Max platform. These areas of interest should be used in conjunction with the Service Manual and Electric Diagnostic Manual while troubleshooting. This information should be used as an aid to current troubleshooting steps and not a replacement. Best practice is to first troubleshoot current Diagnostic Trouble Codes (DTCs), in order of priority if there are multiple.
SERVICE BULLETIN M1571: REVOLUTION MAX CLUTCH PART AND SERVICE PROCEDURE CHANGE.
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PURPOSE: Revision. Updated Motorcycles Affected. This bulletin informs dealers that Harley-Davidson RevolutionMax clutches will be serviced by a clutch disc kit and not with individual plates. A new clutch disc service kit (Part No. 37000383) will be provided for making clutch repairs on all Revolution Max powered vehicles moving forward. The procedure of replacing individual discs is no longer recommended. If one steel or fiber plate requires replacement, a clutch disc kit will need to be installed. Online Service Manuals located in Service Information Portal (SIP) and future printed copies will reflect this information. See https://serviceinfo.harley-davidson.com for the latest electronic version of the service manual.
SERVICE BULLETIN M1553: REVOLUTION MAX SPECIAL TOOL HD-53023 UPDATE.
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PURPOSE: To inform dealers that Harley-Davidson has updated the Camshaft Chain Retraction tool for all Revolution Max powertrains. The original tool (Part No. HD-53023) was made with a wire gauge too large to fit into the camshaft chain tensioner access hole without modification. A new Camshaft Chain Retraction tool (Part No. HD-53023-A) will be shipped to dealers at no charge. Vehicles Affected: All 2021 through 2023 Revolution Max powered vehicles.
SERVICE BULLETIN M1546: REVOLUTION MAX JIFFY STAND HARDWARE TORQUE CHANGE.
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PURPOSE: This bulletin informs dealers that a change has been made to the hardware installation procedure for screws securing the jiffy stand on vehicles powered by the Revolution Max engine. See Figure 1 through Figure 4. When installing all jiffy stand screws, use LOCTITE 243 MEDIUM STRENGTH THREADLOCKER AND SEALANT (BLUE) (99642-97) and tighten to updated torque specification: 2022 ft-lbs (2730 Nm). Update all printed service manuals for Revolution Max products to include the use of threadlocker and updated torque. See https://serviceinfo.harley-davidson.com
SERVICE BULLETIN M1559: REVOLUTION MAX ECM UPDATE.
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PURPOSE: This bulletin informs dealers that Harley-Davidson has an Electronic Control Module (ECM) update that is available on Digital Technician II (DT II). This update is to address Diagnostic Trouble Code (DTC) P000000 setting and putting the bike into the fast idle position (4,000 rpm). The update also addresses the concern of an inadvertent tripping of P227900 for the intake air leak under certain riding conditions when no intake leak is present.
Electrical
16 bulletinsSERVICE BULLETIN M1674: REDESIGNED FUEL PUMP FOR SPORTSTER S AND PAN AMERICA.
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Purpose: Initial Release. To inform dealers that a new redesigned Fuel Pump Module is available for the Sportster S and Pan America vehicles. The new Fuel Pump Module (Part No. 61200062A) has a larger fuel filter with new media and a slightly different housing to allow for assembly. This new Fuel Pump Module is retrofittable to all older vehicles. The new Fuel Filter (Part No. 61200123) is available separately for service but will only fit the new Fuel Pump Module. DO NOT mix old and new parts. When making warranty repairs, use the new Fuel Pump module (Part No. 61200062A). Return all old inventory of (Part No. 61200062) per Table 4.
SERVICE BULLETIN M1555 (REV H): BATTERY WARRANTY GUIDELINES.
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PURPOSE: This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty. REV H. Update section headers: AGM and Lithium-Iron Phosphate Batteries. Add graphics and callouts. Updated: Information on Battery.
SERVICE BULLETIN M1555 (REV G): BATTERY WARRANTY GUIDELINES.
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PURPOSE: [Revision G: Updated: Information on Battery. Update section headers: AGM and Lithium-Ion Batteries.] This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty.
SERVICE BULLETIN M1663: REVOLUTION MAX INSTRUMENT MODULE SOFTWARE UPDATE.
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PURPOSE: This bulletin informs the dealers that there is a new Instrument Module (IM) software (LM7_51456370_20240322) and (LM4_51456370_20240325). Refer to: Infotainment Support Resources page on Service Information Portal (SIP).
SERVICE BULLETIN M1555 (REV F): BATTERY WARRANTY GUIDELINES.
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PURPOSE: [Revision F. Added: Added video link for the DCA-8000 Battery Tester. Added: Supplemental Procedure Video.] This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty.
SERVICE BULLETIN M1555 (REV F): BATTERY WARRANTY GUIDELINES.
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PURPOSE: [Revision F. Added: Added video link for the DCA-8000 Battery Tester. Added: Supplemental Procedure Video.] This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty.
SERVICE BULLETIN M1555 (REV E): BATTERY WARRANTY GUIDELINES.
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PURPOSE: Revision E. Added: Added procedures for the DCA-8000 E Battery Tester.* Updated: All sections. This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty.
SERVICE BULLETIN M1654: DTII MODULE REPLACE MENU CHANGE.
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PURPOSE: This bulletin informs dealer technicians that there is a new menu item in Digital Technician II (DT II). DT II now has a stand alone Module Replace menu inside of Vehicle Setup. This will allow you to program the factory settings, for the connected vehicle, to the Electronic Control Module (ECM), Body Control Module (BCM) and Infotainment Control Unit (IFCU) (if equipped) in a single menu. Initial Release. 8/7/2024.
SERVICE BULLETIN M1490 (V 24.8.8): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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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.
SERVICE BULLETIN M1619: DIAGNOSTIC TROUBLE CODE (DTC) U04438F AND U04318F.
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Purpose: This bulletin informs dealers that the current software version for the Left Hand Control Module (LHCM) and Right Hand Control Module (RHCM) have Diagnostic Trouble Codes (DTCs) U04438F (reported by the LHCM) and U04318F (reported by the RHCM), that are being set-off intermittently, shortly after a starting event and then seen as historic DTCs but there are no actual faults or operational concerns with the vehicle. In these cases where these codes are being found as historic, no further troubleshooting or hardware replacement should take place to resolve these historic DTCs. This will be addressed in a future software release. NOTE: If DTCs U04438F or U04318F are found to be CURRENT, follow troubleshooting steps in the Electrical Diagnostic Manual (EDM). Current affected software levels: LHCM: 0.33.02 RHCM: 0.37.02.
SERVICE BULLETIN M1590: REVOLUTION MAX CRUISE CONTROL SWITCH REPLACEMENT.
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Purpose: Revision. This bulletin informs dealers that Harley-Davidson has a new part available to allow replacement of the Cruise Control Switch on Revolution Max powered vehicles. Replacing the entire Left Hand Control Module (LHCM) is no longer required due to a broken cruise control switch. Revision: Updated Required Dealer Action, Add graphic.
SERVICE BULLETIN M1590: REVOLUTION MAX CRUISE CONTROL SWITCH REPLACEMENT.
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Purpose: This bulletin informs dealers that Harley-Davidson has a new part available to allow replacement of the Cruise Control Switch on Revolution Max powered vehicles. Replacing the entire Left Hand Control Module (LHCM) is no longer required due to a broken cruise control switch.
SERVICE BULLETIN M1579 (REV B): REVOLUTION MAX BCM AND ECM UPDATE.
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PURPOSE: REVISION. This bulletin informs dealers that a BCM and Electronic Control Module (ECM) update is available on Digital Technician II (DT II). Revision: Updated Body Control Module (BCM) part numbers. Updated Part Numbers Affected.
SERVICE BULLETIN M1578: REVOLUTION MAX FOB TROUBLESHOOTING.
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PURPOSE: To provide dealers with a list of items to check for when troubleshooting an inoperative security FOB for Revolution Max applications.
SERVICE BULLETIN M1579: REVOLUTION MAX BCM AND ECM UPDATE.
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PURPOSE: This bulletin informs dealers that a Body Control Module (BCM) and Electronic Control Module (ECM) update is available on Digital Technician II (DT II). The BCM update addresses potential nuisance Diagnostic Trouble Codes (DTCs) and ride mode faults, most commonly found after a low voltage crank event or cold temperature start attempt. The ECM calibration update is to address a crank, but no start condition that can occur after a stall, followed by Diagnostic Trouble Code (DTC) P0347. This condition can sometimes be corrected by turning the Ignition OFF and waiting 30 or more seconds before turning the Ignition ON again, allowing the starter button to operate as normal.
SERVICE BULLETIN M1569: PAN AMERICA AND SPORTSTER S INSTRUMENT MODULE UPDATE.
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PURPOSE: This bulletin informs dealers that Harley-Davidson has identified an Instrument Module (IM) software concern on 2021 and 2022 Pan America and Sportster S models. There are two concerns that are being addressed with a software update to the IM. The IM temporarily loses display and "VIN Error" message is displayed. NOTE: This update will not correct an existing "VIN Error" message. It is to prevent the "VIN Error" message from happening. If the condition already exists on a vehicle, call your regional Harley-Davidson center for assistance.
Transmission
7 bulletinsSERVICE BULLETIN M1490 (V 26.8.3): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 Version 26.8.3, Release Date: Week of July 24, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features - Harley-Davidson: 2023-2024 Touring: Updated Electronic Control Module (ECM) calibration offerings. LiveWire: S2DM/MH/AP: Calibration bundle 10.2.28: Telematic Control Unit (TCU) reflash updates. Change: Vehicle Setup: Body Control Module (BCM) Tire Pressure Monitoring System (TPMS) Replacement: Correct issue where tire size selections were not available. System Info Auxiliary Load Controller (ALC): Added Bike configuration field. Data Items Trike ECM: Improved display of Gear Position when in reverse. Amp Added support for (Part No. 76001619).
SERVICE BULLETIN M1490 (V 26.5.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 26.5.2 Release Date: Week of March 30, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features. 2024: Pan America (RA1250), Pan America Special (RA1250S), CVO Pan America (RA1250SE) Updated Body Control Module (BCM) reflash calibration. 2024-2026: CVO Road Glide ST (FLTRXSTSE) Updated Electronic Control Module (ECM) reflash calibration. 2026: CVO Street Glide ST (FLHXSTSE) Updated ECM reflash calibration. Changes. 2026 Trike Update Reverse Lockout Reason to support new values, Vehicle setup: Gear Indicator Calibration improve operation. 2025-2026 Softail Update reflash for Softail Speedometer (SPDO) enable operation of auxiliary lamp telltale. LiveWire S2 Provide reflash support for Vehicle Supervisory Controller (VSC) hardware (Part No. 41001756RE).
SERVICE BULLETIN M1490 (V 26.4.3): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 26.4.3 Release Date: Week of February 25, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). Refer to bulletin M1713 for instructions. New Features: Support for 2026 LiveWire Vehicles, LiveWire S2 Vehicle Status: Display notification when vehicle has unconfigured Electro Hydraulic Control Unit (EHCU) module, Vehicle Setup: New operation to support Anti-lock Braking System (ABS) / EHCU Correction, Reflash: Enabled EHCU calibrations for vehicles previously ineligible for update, requiring ABS / EHCU Correction to be performed. 20212025 Pan America (RA1250), Pan America S (RA1250S), Pan America ST (RA1250ST), CVO Pan America (RA1250SE): Reflash Updated Electronic Control Module (ECM) software calibration to improve quick shifter performance. Changes: Infotainment Control Unit (IFCU) Customization Correct issue where speakers were improperly configured.
SERVICE BULLETIN M1692: REVOLUTION MAX OIL SYSTEM SCAVENGE SCREEN.
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PURPOSE: Initial Release. This bulletin informs dealers that all 2026 Revolution Max Powertains will come equipped with oil scavenge screens installed in the clutch and water pump cavities of the oil system. Oil scavenge screens prevent debris from entering the oil pump, potentially causing damage that would require additional inspection and repair to the bottom end of Revolution Max Powertrain.
SERVICE BULLETIN M1655: REVOLUTION MAX CLUTCH CABLE FREE PLAY SPECIFICATION.
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PURPOSE: This bulletin informs dealers that the clutch cable free play specification has been updated on all Revolution Max vehicles. Original specification: Dimension: 0.0390.079 in (12 mm). Free play has now been changed to: Dimension: 0.0790.118 in (23 mm). All online electronic service manuals and future publications will reflect this information.
SERVICE BULLETIN M1571: REVOLUTION MAX CLUTCH PART AND SERVICE PROCEDURE CHANGE.
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PURPOSE: This bulletin informs dealers that Harley-Davidson Revolution Max clutches will be serviced by a clutch disc kit and not with individual plates. A new clutch disc service kit (Part No. 37000383) will be provided for making clutch repairs on all Revolution Max powered vehicles moving forward. The procedure of replacing individual discs is no longer recommended. If one steel or fiber plate requires replacement, a clutch disc kit will need to be installed. Online Service Manuals located in Service Information Portal (SIP) and future printed copies will reflect this information. See https://serviceinfo.harley-davidson.com for the latest electronic version of the service manual.
SERVICE BULLETIN M1560: REVOLUTION MAX STARTER CLUTCH GEAR UPDATE.
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PURPOSE: This bulletin informs dealers that Harley-Davidson wants to make aware of changes to the Revolution Max Starter Clutch Gear and aid in properly diagnosing the condition making replacement necessary.
Lighting
6 bulletinsSERVICE BULLETIN M1490 (V 26.7.3): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 26.7.3. Release Date: Week of June 11, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions.
SERVICE BULLETIN M1490 (V 26.6.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 26.6.2. Release Date: Week of April 22, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features: 2026 Police Vehicle Setup: Civilianize; LiveWire S2: Del Mar (S2DM), Mulholland (S2MH), Alpinista (S2AP) - Calibration bundle 10.2.20: Vehicle Supervisory Controller (VSC) and Onboard Charger (OBC) reflash updates. Changes: 2026 Trike Update Reverse Lockout Reason resize column.
SERVICE BULLETIN M1713 (REV C): DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.4.3).
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PURPOSE: Revision C. This bulletin informs dealers that an issue was discovered in the Digital Technician II (DT II) software version (26.0.2), released on November 18, 2025. The issue prevents automatic software updates to be installed on your DT II computer. A manual installation of the latest DT II software version (26.4.3) will need to be performed if current DT II software version is (26.0.2), to allow future automatic updates. If a manual update to (26.1.5) or (26.3.2) has previously been completed, DT II will automatically update to (26.4.3) and no additional action is needed.. Revision C. Updated: Purpose for Service Bulletin and Required Dealer Action. Updated to Software Version (26.4.3).
SERVICE BULLETIN M1713 (REV B): DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.3.2).
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PURPOSE: Revision B. This bulletin informs dealers that an issue was discovered in the Digital Technician II (DT II) software version (26.0.2), released on November 18, 2025. The issue prevents automatic software updates to be installed on your DT II computer. A manual installation of the latest DT II software version (26.3.2) will need to be performed if current DT II software version is (26.0.2), to allow future automatic updates. If a manual update to (26.1.5) or (26.2.1) has previously been completed, DT II will automatically update to (26.3.2) and no additional action is needed. Revision B. 1/28/2026. Updated: Purpose for Service Bulletin and Required Dealer Action. Updated to Software Version (26.3.2). Revision A. 1/16/2026. Updated: Purpose for Service Bulletin and Required Dealer Action. Updated to Software Version (26.2.1).
SERVICE BULLETIN M1713: DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.1.5).
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PURPOSE: Initial Release. This bulletin informs dealers that an issue was discovered in the Digital Technician II (DT II) software version (26.0.2), released on November 18, 2025. The issue prevents automatic software updates to be installed on your DT II computer. A manual installation of the latest DT II software version (26.1.5) will need to be performed, to allow future automatic updates.
SERVICE BULLETIN M1583: 2023 PAN AM RADIATOR IMPROVEMENTS.
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PURPOSE: The purpose of this bulletin is to notify about the revised component on the 2023 Pan Am radiator. The old part number has been superseded to a new part number. For Pan America models built on January 31, 2023 and later, a clamp was added to the lower radiator assembly to support the hose.
Fuel System
3 bulletinsSERVICE BULLETIN M1490 (V 26.9.4): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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). New Software Update. NOTE: The TECHLINK 3 (PART NUMBER: HD-48650-TL3) supports Controller Area Network (CAN) and J-1850 protocol vehicles. 6-pin CAN vehicles are recommended to use Techlink 3 (TL-3) All 2021 (and later) vehicles must use TL-3 (connects to Red DLC on the vehicle) 4-pin (J-1850) vehicles are recommended to use TL-3. This includes all Fuel Injected Harley-Davidson vehicles 2002 and later. TECHLINK 3 (PART NUMBER: HD-48650-TL3) will not support Buell, VDO and Magneti Marelli vehicles (4-pin DLC). Support for those vehicles is available via TECHLINK II (PART NUMBER: HD-48650-1). Version 26.9.4, Release Date: Week of September 17, 2026. New Features, Changes. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions.
SERVICE BULLETIN M1659: PAN AMERICA FUEL TANK UPDATE.
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PURPOSE: This bulletin informs dealers that the 2024 Pan America vehicles have been updated to have the inside of the fuel tank e-coated. To accommodate this process, a threaded plug (Part No. 10500167) was added to the left rear of the fuel tank. When ordering replacement fuel tanks for 2021-2023 vehicles, they will come with the e-coat process. Dealers will need to order and install the threaded plug (Part No. 10500167) separately. Electronic Parts Catalogs are updated to reflect this information. NOTE: When ordering replacement fuel tanks for 2021-2023 Pan America vehicles, they will come non e-coated. Once old stock is depleted, all replacement tanks will come e-coated and dealers will need to order (Part No. 10500167) separately. Upgrading to new fuel tank is not warrantable.
SERVICE BULLETIN M1648: PAN AMERICA FUEL CAP CHANGES AND SERVICE KITS.
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PURPOSE: This bulletin informs dealers that these parts are now obsolete: Fuel Cap (Part No. 61000533), Locking Fuel Cap (Part No.61000616), Flange Plate (Part No. 61200068). Obsolete fuel caps and flange plates are not compatible with new ones. When replacing an obsolete fuel cap with new, the flange plate must also be replaced and vice versa. This applies to all 2021-2023 Pan America (RA 1250) and Pan America S (RA 1250S) models. Table 2 for fuel cap and flange plate kits that contain both components. When ordering, there are two types of kits: Locking Fuel Cap (Part No. 61001144), Non-Locking Fuel Cap (Part No. 61001145). NOTE: The aforementioned kits include Flange Plate (Part No. 61200115).
Pre-Delivery & Maintenance
3 bulletinsSERVICE BULLETIN M1573: REVOLUTION MAX TROUBLESHOOTING TIPS.
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PURPOSE: Revision. Added Pan America information, Required Dealer Action, and Credit Procedure. This bulletin informs dealers that Harley-Davidson has specific areas of interest while troubleshooting on the Revolution Max platform. These areas of interest should be used in conjunction with the Service Manual and Electric Diagnostic Manual while troubleshooting. This information should be used as an aid to current troubleshooting steps and not a replacement. Best practice is to first troubleshoot current Diagnostic Trouble Codes (DTCs), in order of priority if there are multiple.
SERVICE BULLETIN M1573: REVOLUTION MAX TROUBLESHOOTING TIPS.
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PURPOSE: This bulletin informs dealers that Harley-Davidson has specific areas of interest while troubleshooting on the Revolution Max platform. These areas of interest should be used in conjunction with the Service Manual and Electric Diagnostic Manual while troubleshooting. This information should be used as an aid to current troubleshooting steps and not a replacement. Best practice is to first troubleshoot current Diagnostic Trouble Codes (DTCs), in order of priority if there are multiple.
SERVICE BULLETIN M1558: 2021-2022 PAN AMERICA LOWER RADIATOR HOSE ROUTING.
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PURPOSE: This bulletin informs dealers that Harley-Davidson wants to raise awareness of proper lower radiator hose routing and installation.
Tires & Wheels
2 bulletinsWARRANTY BULLETIN W146 (REV C): TIRE TREAD DEPTH GUIDE-UPDATE.
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PURPOSE: [Revision C. Updated: Tire Tread Depth Guide. Add tire part numbers 43100063, 43200035,43100029A, 43100033A and 43200045A.] To provide tire tread depth specifications for the dealership network to consult when filling warranty claims on used tires. Please see the Warranty Manual of your region for tire policy guidelines.
WARRANTY BULLETIN W146 (REV B): TIRE TREAD DEPTH GUIDE-UPDATE.
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PURPOSE: [Revision B. Updated: Tire Tread Depth Guide. Add tire part numbers 43200063 and 43200038A.] To provide tire tread depth specifications for the dealership network to consult when filling warranty claims on used tires. Please see the Warranty Manual of your region for tire policy guidelines. Updated: Tire Tread Guide. Add tire part number 43100038B. Update tire tread depth, adjustment and reimbursement.
Brakes
1 bulletinSERVICE BULLETIN M1684: MARKET SPECIFIC BATTERY INTRODUCTION.
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PURPOSE: Initial Release. This bulletin informs dealers of the availability of new batteries for new Original Equipment (OE) vehicle production and in the Parts and Accessories (P&A) catalog. Availability of the new Absorbed Glass Mat (AGM) batteries will vary by market and will be transitioning over the next few months. NOTE: The ring terminal screws are not compatible between Leoch and East Penn batteries. The new batteries will include new ring terminal screws, which must be used. The ring terminal screws from the old battery need to be discarded.
Software & Calibration
1 bulletinSERVICE BULLETIN M1490 (V 24.6.4): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES.
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PURPOSE: Revision. 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 24.6.4. Release Date: Week of May 1, 2024. New Features for LiveWire S2DM and S2MH, 2024 Revolution Max, and 2024 Touring.
Suspension
1 bulletinSERVICE BULLETIN M1631: REVOLUTION MAX OIL CHECK PROCEDURE UPDATE.
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PURPOSE: To inform dealers of a new procedure for checking oil levels on Revolution Max powered vehicles. The procedure has been updated to account for potential concerns of a low oil fill condition when set on the side stand. This condition could be caused by having varying degree lean angles of the vehicles in the Revolution Max family while utilizing the same dipstick. Compounding this is the difference in lean angle of vehicles that come equipped with Adaptive Ride Height (ARH) set in the locked position (high) and set to drop when coming to a stop (low). To remedy this potential concern, the final step in checking the oil level will now be performed with the oil at operating temperature in the upright position for consistency across vehicle family and suspension settings. The side stand markings on the dipstick will only be used for a quick reference. NOTE: Oil levels checked on the side stand may read high after servicing the oil level in the upright position hot. This is a normal condition.
Body & Paint
1 bulletinSERVICE BULLETIN M1582: 2023 PAN AMERICA WINDSHIELD IMPROVEMENTS.
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PURPOSE: The purpose of this bulletin is to notify dealers about the revised components on the 2023 Pan Am windshield Stop Brackets. The old part number has been superseded to a new part number.