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Service bulletin M1112

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 id620560
Published by NHTSA2001-08-14
Manufacturer's numberM1112
Manufacturer's date2001-04-09
NHTSA componentELECTRICAL SYSTEM:IGNITION:MODULE

NHTSA's summary

SOME CUSTOMERS WITH AN EARLIER STOCK ECM MAY EXPERIENCE A COLD AMBIENT, LIGHT LOAD, 1800 - 2000 RPM STUMBLE OR COLD WEATHER PLUG FOULING. *TT

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, Ignition

Vehicles listed
HARLEY-DAVIDSON EVOLUTION1997 to 1998
HARLEY-DAVIDSON TWIN CAM1999 to 2001

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