Service bulletin 1HDG4C4U11

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.

NHTSA's summary

SERVICE BULLETIN M1450: MILWAUKEE-EIGHT WITH STAGE KITS - LOSS OF POWER OR HIGH ENGINE BRAKING. Revision. Purpose: 2017 and 2018 model motorcycles equipped with a Milwaukee-Eight? engine and a Stage III or Stage IV kit can experience a condition known as sumping during extended periods in low gear, at high rpm or under heavy engine load. This bulletin provides the diagnostic procedure for determining if sumping is occurring.

The document

• NHTSA's copy of the document (PDF)
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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

Engine, Transmission and driveline

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

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