# Service bulletin M1634

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: 10252820
- Published by NHTSA: 2024\-04\-06
- Manufacturer's number: M1634
- Manufacturer's date: 2024\-03\-21
- NHTSA component: EQUIPMENT; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; SEATS

## NHTSA's summary

SERVICE BULLETIN M1634 \(REV A\): SWITCHBACK SEAT FOR NIGHTSTER. PURPOSE: To inform dealers of a seat support cable issue with the initial shipment of Switchback Seats \(Part No. 52000655\) that will require a replacement with Seat Support Cable \(Part No. 52100087\). In the initial shipment of Nightster Switchback Seats, the seat support cable used to limit the seat opening while accessing the fuel tank was installed to the seat in the incorrect location. Compared to the stock seat, this creates a reduction in available space to access the fuel tank.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10252820-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10252820-9999.pdf)

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

## Components

Equipment and accessories, Fuel system, Seats, Fuel tank

## Vehicles listed

- 2022 to 2024 HARLEY\-DAVIDSON RH975
- 2023 to 2024 HARLEY\-DAVIDSON RH975S

JSON: [/v1/bulletins/10252820](/v1/bulletins/10252820)

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