# Service bulletin 1HDN6H3P04

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: 10135422
- Published by NHTSA: 2018\-05\-07
- Manufacturer's number: 1HDN6H3P04
- Manufacturer's date: 2018\-03\-08
- NHTSA component: ENGINE AND ENGINE COOLING; STEERING:ELECTRIC POWER ASSIST SYSTEM

## NHTSA's summary

SERVICE BULLETIN M1439: 2017 AND 2018 DRIVE BELT TENSION. This describes the new belt tension specification to use for belt tension before the first service interval. Belt tension is initially set to allow for early break\-in of the belt and sprockets. The break\-in occurs in the first few hundred miles and even to some degree in post assembly audit. Harley\-Davidson has provided an acceptable range of belt tension variation at PDI based on testing and evaluation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10135422-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10135422-0001.pdf)

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

## Components

Engine, Steering, Power steering

## Vehicles listed

- 2017 HARLEY\-DAVIDSON TOURING
- 2017 HARLEY\-DAVIDSON TRIKE

JSON: [/v1/bulletins/10135422](/v1/bulletins/10135422)

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