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Service bulletin HD-TT-436

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 id10056032
Published by NHTSA2014-08-18
Manufacturer's numberHD-TT-436
Manufacturer's date2014-06-10
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

HARLEY DAVIDSON: EVEN THOUGH VEHICLE SPEED SENSORS (VSS) ARE BEING REPLACED DUE TO CIRCUIT PROBLEMS AND ARE INOPERATIVE, ON SOME MOTORCYCLES, THEY ARE BEING TESTED AND COMING BACK WITH NO TROUBLE. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system

Vehicles listed
HARLEY-DAVIDSON FLTRU2012
HARLEY-DAVIDSON XL SPORTSTER2014

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