# 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: 10180720
- Published by NHTSA: 2020\-10\-06
- Manufacturer's number: M1450
- Manufacturer's date: 2020\-09\-22
- NHTSA component: POWER TRAIN; ENGINE AND ENGINE COOLING; EQUIPMENT

## NHTSA's summary

SERVICE BULLETIN M1450: MILWAUKEE\-EIGHT EQUIPPED VEHICLES \- LOSS OF POWER OR HIGH ENGINE BRAKING. PURPOSE: Revision. 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. 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/2020/MC-10180720-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180720-9999.pdf)

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

## Components

Engine, Equipment and accessories, Transmission and driveline

## Vehicles listed

- 2018 to 2020 HARLEY\-DAVIDSON FLDE
- 2018 to 2019 HARLEY\-DAVIDSON FLFB
- 2018 to 2020 HARLEY\-DAVIDSON FLFBS
- 2018 HARLEY\-DAVIDSON FLFBS ANV
- 2018 HARLEY\-DAVIDSON FLFBS ANX
- 2020 HARLEY\-DAVIDSON FLFBSANV
- 2018 to 2020 HARLEY\-DAVIDSON FLHC
- 2018 to 2020 HARLEY\-DAVIDSON FLHCS
- 2017 to 2018 HARLEY\-DAVIDSON FLHP
- 2020 HARLEY\-DAVIDSON FLHP
- 2017 to 2020 HARLEY\-DAVIDSON FLHR
- 2017 HARLEY\-DAVIDSON FLHR / ROAD KING
- 2017 to 2020 HARLEY\-DAVIDSON FLHRXS
- 2019 to 2020 HARLEY\-DAVIDSON FLHT
- 2017 to 2019 HARLEY\-DAVIDSON FLHTCU
- 2017 HARLEY\-DAVIDSON FLHTCUL
- 2017 HARLEY\-DAVIDSON FLHTCUTC
- 2017 to 2020 HARLEY\-DAVIDSON FLHTCUTG
- 2019 to 2020 HARLEY\-DAVIDSON FLHTCUTGSE
- 2017 to 2020 HARLEY\-DAVIDSON FLHTK
- 2018 HARLEY\-DAVIDSON FLHTK ANV
- 2020 HARLEY\-DAVIDSON FLHTK SHRINE
- 2017 to 2019 HARLEY\-DAVIDSON FLHTKL
- 2017 to 2020 HARLEY\-DAVIDSON FLHTKSE
- 2018 HARLEY\-DAVIDSON FLHTKSE ANV
- 2017 to 2020 HARLEY\-DAVIDSON FLHTP
- 2017 to 2020 HARLEY\-DAVIDSON FLHX
- 2017 to 2020 HARLEY\-DAVIDSON FLHXS
- 2017 to 2020 HARLEY\-DAVIDSON FLHXSE
- 2017 to 2020 HARLEY\-DAVIDSON FLRT
- 2018 to 2020 HARLEY\-DAVIDSON FLSB
- 2018 to 2020 HARLEY\-DAVIDSON FLSL
- 2020 HARLEY\-DAVIDSON FLTRK
- 2017 to 2019 HARLEY\-DAVIDSON FLTRU
- 2017 to 2020 HARLEY\-DAVIDSON FLTRX
- 2017 to 2020 HARLEY\-DAVIDSON FLTRXS
- 2018 to 2020 HARLEY\-DAVIDSON FLTRXSE
- 2018 to 2020 HARLEY\-DAVIDSON FXBB
- 2018 to 2019 HARLEY\-DAVIDSON FXBR
- 2018 to 2020 HARLEY\-DAVIDSON FXBRS
- 2018 HARLEY\-DAVIDSON FXBRS ANX
- 2018 HARLEY\-DAVIDSON FXDB
- 2019 to 2020 HARLEY\-DAVIDSON FXDRS
- 2019 HARLEY\-DAVIDSON FXFB
- 2018 to 2020 HARLEY\-DAVIDSON FXFBS
- 2018 to 2020 HARLEY\-DAVIDSON FXLR
- 2020 HARLEY\-DAVIDSON FXLRS
- 2018 HARLEY\-DAVIDSON FXSB
- 2020 HARLEY\-DAVIDSON FXST

JSON: [/v1/bulletins/10180720](/v1/bulletins/10180720)

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