NHTSA service bulletin

NHTSA Service Bulletin 11014014: 2006-2024 Harley-davidson Fld

Official manufacturer communication context for 2006-2024 Harley-davidson Fld, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11014014 summary graphic for 2006-2024 Harley-davidson Fld
11014014NHTSA document ID
Over-the-air software updatecommunication type
150affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft Drive Gear Retention Kit and service proceduresfor the Milwaukee-Eight and Twin Cam applications. In an effort to increase the clamp load of the camshaft drive sprocket bolted joint and prevent the drive bolt from loosening in high lift camshaft applications, the following changes have been made: a. The camshaft drive bolt final torque has been increased to 40 ft-lbs (54 Nm) for all Milwaukee-Eight and certain Twin Cams models. See Vehicles Affected. This increase in torque will make the bolt a one time use application. Never re-use a camshaft drive bolt for service after tightening to the increased specification. See service manual for updated procedure. b. A new camshaft drive gear retention kit (Part No. 91800088) has been created. This new kit is compatible with all Milwaukee-Eight and Twin Cam engines using Parts and Accessories (P&A) camshaft and Original Equipment (OE) camshaft applications. See Instruction sheet for specific fitment on Twin Cam OE camshaft applications. The new kit utilizes friction washers to prevent unwanted rotation of components in the drive sprocket bolted joint under stress. The use of liquid threadlocker on the threads of the bolt and pre-lube to the head of the bolt flange and outside of the washer help the bolt reach full stretch when tightening. NOTE: Engines produced at all Harley-Davidson Motor Company (HDMC) plants will not come with the new kits installed. They will continue to be produced with (Part No. 25566-06).

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

MakeModelModel yearsBuyer note
Harley-davidsonFld2012, 2014, 2015, 2016Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlde2017-2020Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfb2018, 2019Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs2018-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs Anv2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbs Anx2018Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlfbsanv2020, 2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlh2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhc2017-2021Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhcs2018-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhcs Anv2018, 2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhfb2023Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhp2007-2024Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhpe2007-2011Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhr2007-2022Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhr1032011, 2013Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhrc2007, 2008, 2009, 2010, 2011, 2013, 2014, 2015, 2016Ask for service records and run the exact VIN before purchase.
Harley-davidsonFlhrc1032011, 2012Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 11014014?

SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft Drive Gear Retention Kit and service proceduresfor the Milwaukee-Eight and Twin Cam applications. In an effort to increase the clamp load of the camshaft drive sprocket bolted joint and prevent the drive bolt from loosening in high lift.

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.

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