# Service bulletin M1686

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11019403
- Published by NHTSA: 2025\-06\-07
- Manufacturer's number: M1686
- Manufacturer's date: 2025\-05\-09
- NHTSA component: UNKNOWN OR OTHER; STRUCTURE:BODY; FUEL/PROPULSION SYSTEM

## NHTSA's summary

SERVICE BULLETIN M1686: 2025 FAT BOY GRAY GHOST \(FLSTFI\) PAINT SURFACE CARE. PURPOSE: Initial release. This bulletin informs dealers that the PVD painted vehicle surfaces on the 2025 Fat Boy Gray Ghost \(FLSTFI\) require special awareness and attention for care and cleaning. The Fat Boy Gray Ghost \(FLSTFI\) rear fender, fuel tank and front fender are PVD painted surfaces. DO NOT TREAT THESE COMPONENTS AS CHROME. Figure 1 illustrates PVD Painted Surfaces. Physical Vapor Deposition \(PVD\) coatings are thin film coatings where a solid material is vaporized in a vacuum chamber and deposited onto a target material. It is used to change the surface properties of the object to be coated, where new mechanical, chemical, electrical or optical characteristics are needed.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019403-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019403-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame, Fuel system

## Vehicles listed

- 2006 HARLEY\-DAVIDSON FLSTFI

JSON: [/v1/bulletins/11019403](/v1/bulletins/11019403)

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