NHTSA Service Bulletin 10202127: 2018-2021 Harley-davidson Flde
Official manufacturer communication context for 2018-2021 Harley-davidson Flde, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
SERVICE BULLETIN M1535: SERVICE MANUAL UPDATES. PURPOSE: This bulletin informs dealers that Harley-Davidson has identified incorrect information in the 2018- 2021 Softail Service Manuals. These errors have been corrected and are visible on Service Information Portal (SIP). Update 3 sections of the Softail Service Manuals. Each correction specifies which model year is needed for the update. Follow the updated service procedures available in SIP and replace printed Softail Service Manual content: 3.15 Brake Line: Front Master Cylinder (ABS) 2018 - 2021 Softail Service Manuals; 3.21 Steering Head/Fork Stem and Bracket Assembly - 2021 Service Manual; 3.20 Front Fork - FXLRS 2021 Service Manual.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10202127?
SERVICE BULLETIN M1535: SERVICE MANUAL UPDATES. PURPOSE: This bulletin informs dealers that Harley-Davidson has identified incorrect information in the 2018- 2021 Softail Service Manuals. These errors have been corrected and are visible on Service Information Portal (SIP). Update 3 sections of the Softail Service Manuals. Each correction specifies which model year is needed for the update. Follow the updated.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
Get Full Report