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Service bulletin M1508

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10172226
Published by NHTSA2020-03-07
Manufacturer's numberM1508
Manufacturer's date2020-02-26
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM; ENGINE; EQUIPMENT

NHTSA's summary

SERVICE BULLETIN M1508: 2009-2020 TRIKE PLATFORM - REVERSE MOTOR. PURPOSE: To inform dealers of a running change for the new reverse motor (Part No. 83388-09C) for Trike models. As of January 28, 2020 all Trike platform vehicles will be manufactured using the new reverse motor. The new reverse motor will be used to replace reverse motor assemblies (Part No. 83388-09, 83388-09A,83388-09B) that have failed diagnostics. Refer to Table 2. This motor contains several improvements for better motor durability.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Equipment and accessories, Transmission and driveline

Vehicles listed
HARLEY-DAVIDSON FLHTCUTG2009 to 2020
HARLEY-DAVIDSON FLHTCUTGSE2020
HARLEY-DAVIDSON FLHXXX2010 to 2011
HARLEY-DAVIDSON FLRT2015 to 2020
HARLEY-DAVIDSON TRIKE2017 to 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.