# Service bulletin M1450

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: 10158168
- Published by NHTSA: 2019\-04\-15
- Manufacturer's number: M1450
- Manufacturer's date: 2019\-03\-28
- NHTSA component: ENGINE; POWER TRAIN

## NHTSA's summary

SERVICE BULLETIN M1450: MILWAUKEE\-EIGHT EQUIPPED VEHICLES \- LOSS OF POWER OR HIGH ENGINE BRAKING. REVISION. Purpose: 2017 \- 2019 model motorcycles equipped with a Milwaukee\-Eight? engine can experience a condition known as sumping during extended periods at high rpm or under heavy engine load. Sumping is when an excessive amount of oil is suspended in the engine crankcase and the flywheel must travel through the oil, resulting in loss of power or a high degree of engine braking and potential engine component damage with extended use under these conditions. This bulletin provides the diagnostic procedure for determining if sumping is occurring.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158168-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158168-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2016 HARLEY\-DAVIDSON FLHR
- 2016 HARLEY\-DAVIDSON FLHTCU
- 2016 HARLEY\-DAVIDSON FLHTCUL
- 2016 HARLEY\-DAVIDSON FLHTCUTG
- 2016 HARLEY\-DAVIDSON FLHTK
- 2016 HARLEY\-DAVIDSON FLHTKL
- 2019 HARLEY\-DAVIDSON FLHTKSE
- 2016 HARLEY\-DAVIDSON FLHX
- 2016 HARLEY\-DAVIDSON FLHXS
- 2019 HARLEY\-DAVIDSON FLHXSE
- 2016 HARLEY\-DAVIDSON FLRT
- 2018 HARLEY\-DAVIDSON FLSB
- 2018 HARLEY\-DAVIDSON FLSL
- 2018 HARLEY\-DAVIDSON FLSTB
- 2018 HARLEY\-DAVIDSON FLSTN
- 2018 HARLEY\-DAVIDSON FLTRU
- 2018 to 2019 HARLEY\-DAVIDSON FLTRUSE
- 2016 HARLEY\-DAVIDSON FLTRX
- 2018 HARLEY\-DAVIDSON FLTRX
- 2016 HARLEY\-DAVIDSON FLTRXS
- 2018 HARLEY\-DAVIDSON FLTRXS
- 2018 HARLEY\-DAVIDSON FLTRXSE
- 2018 HARLEY\-DAVIDSON FXBR
- 2018 HARLEY\-DAVIDSON FXBRS
- 2018 HARLEY\-DAVIDSON FXBRS ANX
- 2018 HARLEY\-DAVIDSON FXDB
- 2018 HARLEY\-DAVIDSON FXFBS

JSON: [/v1/bulletins/10158168](/v1/bulletins/10158168)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20M1450&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10158168&vehicle=Service%20bulletin%20M1450)