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1. Introduction

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1. Introduction

1. Introduction
Relevant for:
MMU3
Last updated 9 days ago
1. Introduction
 Difficulty
Easy
 Steps
8
 Available languages
CSPLDEESITFR

Step 1 Important

Important
Important
Important
⬢Congratulations on your purchase of the assembled Original Prusa MK4S with MMU3!
⬢This guide is dedicated only to the set of assembled MK4S with MMU3 from factory. If you ordered only assembled MMU3 unit and purchased the printer separately, please use this guide Original Prusa MMU3 Assembly
Even though this is an assembled version, there are still a few accessories to assemble before you can start printing:
⬢Cassette Buffer Assembly
⬢Spool Holder Assembly (5x)
⬢Follow the instructions carefully, and proceed with the assembly.

Step 2 Tools required

Tools required
Tools required
Tools required
⬢The following chapters require:
⬢2.5mm Allen key
⬢Side cutters

Step 3 View high resolution images

View high resolution images
View high resolution images
⬢When you browse the guide on help.prusa3d.com, you can view the original images in high resolution for clarity.
⬢Just hover your cursor over the image and click the Magnifier icon ("View original") in the top left corner.

Step 4 Labels guide

Labels guide
Labels guide
Labels guide
Labels guide
⬢All the boxes and bags containing the parts for the build are labeled.
⬢Most of the part drawings on the labels are scaled 1:1 and can be used to identify a part.
⬢You can download and 2D print a Prusa Cheatsheet with the 1:1 scaled fastener drawings. help.prusa3d.com/cheatsheet. Print it at 100 %, don't rescale it, otherwise, it won't work.

Step 5 Prusa Nozzle info

Prusa Nozzle info
Prusa Nozzle info
There are two variants of the Prusa Nozzle that we ship with the printers:
⬢Prusa Nozzle brass CHT high flow (marked CHT)
⬢Prusa Nozzle brass (marked PR)
⬢Your MK4S came equipped with the Prusa Nozzle brass by default.
While it is possible to print with the Prusa Nozzle CHT, please note that specific settings are required for high quality prints.
⬢The Prusa Nozzle CHT is also included in your MMU3 package.
⬢To replace the nozzle on the MK4S, please follow the instructions provided in the dedicated manual How to replace the Prusa Nozzle (MK4S/MK3.9S).

Step 7 Prepare your desk

Prepare your desk
Prepare your desk
⬢Tidy up your desk! Tidying up decreases the probability of losing small parts.
⬢Clear your workspace. Make sure you have enough room. A nice clear flat workbench will get you the results you are aiming for.
⬢Let there be light! Make sure you are in a well-lit environment. Another lamp or even an extra flashlight will probably come in handy.
⬢Prepare something to contain the plastic bags and the removed packing materials so you can recycle them afterwards. Make sure there are no important parts being discarded.

Step 8 Preparing the printer

Preparing the printer
Preparing the printer
⬢Carefully remove the test print from the print sheet.
⬢Remove the print sheet and put it aside for a while.
⬢All set? Let's move on to the next chapter: 2. Cassete Buffer Assembly
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