Printer maintenance

How to update firmware (MK3S+/MK3S/MK3)

Updating the firmware is recommended for all users as every new version brings new features and fixes. To utilize the new SuperPINDA, your MK3S must at least have firmware version…

Adjusting belt tension (MK4/S, MK3.9/S, MK3.5/S, MK3/S/+)

Loose belts would cause a printer to malfunction and prevent proper printing. It can cause Layer shifting, Ghosting, or other print abnormalities like getting an irregular shape…

Firmware updating (MINI/MINI+)

On the MINI you flash the firmware using a USB flash drive. Download the Zip file for the firmware and extract it on your computer. Copy the .bbf file in your chosen language…

Changing or replacing the nozzle (MK2.5/S, MK3/S/+, MK3.5/S)

The Original Prusa MK2.5/S, MK3/S/+, and MK3.5/S use the E3D V6 Hotend. Any nozzle that is compatible with the E3D V6 Hotend can be installed on it. The stock nozzle that accompanies…

Cold pull (MK3/S/+, MK2.5/S, MK3.5/S)

A 'cold pull' is a technique that allows you to clean your printer’s nozzle and hotend from any material that may be stuck or burnt inside. You can also use it to clean your hotend…

How to update firmware (CORE One L, CORE One, CORE One INDX, MK4/S, MK3.9/S, MK3.5/S, XL)

On the Prusa CORE One L, Prusa CORE One/+, Prusa CORE One/+ INDX, Original Prusa MK4/S, MK3.9/S, MK3.5/S, and XL, the firmware is flashed using a USB flash drive. This is valid…

i3 Printer Regular Maintenance

It is recommended to regularly take some time to maintain your printer. This should be done even if the printer is working perfectly. The inspection and maintenance of its various…

SD cards and USB drives

As there are ways of remotely transferring files and starting prints, an SD card or USB flash drive is the most common and reliable way to get your files to your machine. Though…

Removing filament from extruder manually

In case there is a clog in your hotend, the filament might grind against the Bondtech-gears and be damaged enough so it can't be unloaded. It might snap right above the PTFE-tube…

Changing/replacing the nozzle (MINI)

This article will guide you through the replacement of the nozzle on your Original Prusa MINI printer. Note that this requires you to have some tools available and also be careful…

Regular maintenance (MINI/MINI+)

It is recommended to take some time to maintain your Original Prusa MINI/+ regularly. This should be done even if the printer is working perfectly. Clean the sheet If the printed…

Cold pull (MINI)

A cold pull is a technique used to clear the printer’s hotend and nozzle of possible obstructions such as filament and other debris. It is also recommended to be part of the regular…

Adjusting belt tension (XL)

On the Original Prusa XL, adjusting the belt to the optimal tension is crucial to achieving good quality on the prints. A loose belt can cause Layer shifting, Ghosting, or other…

Adjusting belt tension (MINI/MINI+)

Loose belts would cause a printer malfunction and prevent proper printing. The easiest way to check is printing a round object - if any of the belts are not tightened properly…

Cold pull #26702 (MK4S) #13702 (MK4) #28702 (MK3.9S) #21702 (MK3.9) #23702 (MK3.5) #28702 (MK3.5S) #17702 (XL)

The 'cold pull' technique allows you to clean your printer’s nozzle and hotend from any material that may be stuck or burnt inside. You can also use it to clean your hotend during…

Hotend disassembly & heatbreak stuck in the heatsink

This guide is for the E3D V6 Hotend on the MK-series. NOT FOR THE PRUSA MINI! You can find the complete E3Ds assembly manual of the V6 hotend, which can be followed backward for…

Checking/re-aligning the Bondtech gear (MK3.5/S, MK3S/+, MK2.5S)

The Bondtech gears have a lot of pulling force. They might seem secure, but unless properly tightened, on the flat side of the motor's shaft, they can come loose and remain stationary…

Regular printer maintenance (MK4/S, MK3.9/S)

It is recommended to take some time to maintain your Original Prusa MK4/S and MK3.9/S regularly. This should be done even if the printer is working perfectly. Useful tools Besides…

Firmware updating (MMU2S)

When updating from the 1.0.6 to the 3.0.0 firmware version or above, go in LCD menu - Settings - MMU, and set it to ON. Updating the firmware is recommended for all users as every…

Regular printer maintenance (XL)

It is recommended to regularly take some time to maintain your Original Prusa XL. This should be done even if the printer is working perfectly. The inspection and maintenance of…

Firmware updating (MK2.5S/MK2S)

Updating the firmware is recommended for all users as every new version brings new features and fixes. To flash the firmware onto your printer, you need: Computer running Windows,…

Buddy electronics Wiring (MINI)

With the release of the Original Prusa MINI, we have again developed a new mainboard, which is a 32-bit platform. It still works on 24V and uses Trinamic drivers for motors, allowing…

Testing safety features (MK3/MK3S)

Our brand new Original Prusa i3 MK3 comes with lots of new safety features. That makes printing a lot more reliable and safe. In this article, we will showcase how to properly…

Vibration/noise when printing (MINI/MINI+)

Your Original Prusa MINI and MINI+ printer may be causing some vibrations during use. In most cases, this will not cause any printing issues, however, we will show you how to minimize…

SL1/SL1S maintenance

Regular Printer Maintenance Although the Original Prusa SL1/SL1S has a number of smart sensors and has been carefully designed to be easy to use, it’s still a machine and requires…

How to remove a stripped screw

If you are trying to unscrew any of the screws in the printer, and the key keeps turning without releasing the screw, it means that the screw is stripped. You might wish to drill…

Firmware updating (SL1/SL1S)

The Original Prusa SL1 has an update-server, which is checking for updates automatically. There is no need to do it manually, but this option is still possible. Starting from firmware…

MMU3 regular maintenance

Regular maintenance is recommended for your Original Prusa MMU3 upgrade. Refer to the images below to familiarize yourself with the names of each part of the MMU3 unit. Idler…

FEP film replacement (SL1)

Please note: Every time you replace the FEP film, tighten the screws properly, but don’t use excessive force. Overtightening the screws may lead to issues with their removal, during…

Firmware updating (CW1)

Updating the firmware is recommended for all users as every new version brings new features and fixes. To flash the firmware onto your printer, you need: Computer running Windows,…

Print surface preparation

Before you start printing, you should know that various materials have different adhesions on various surfaces. It is crucial to pick the right steel sheet for your printer and…

Printing without purge tower on the XL (Multi-Tool)

The Original Prusa XL can print true multi-material prints without the need for any purge or wipe tower. The purge tower is turned ON by default (when you are mixing materials…

MMU2S regular maintenance

For future reference, see the picture below and try to remember the name of each part of the MMU unit. You will find this information in your printed MMU handbook as well. Hobbed…

How to replace a M.I.N.D.A. sensor (MINI)

How to replace a hotend PTFE tube (MINI/MINI+)

Community translations

The firmware for each Original Prusa printer is currently translated into multiple languages and we would like to expand it further. We welcome everyone to join us and localize…

SL1/SL1S print removing

In this guide, we will show you what to do when your SL1 print is successfully finished and you want to remove it from the metal platform. When handling resins, always wear protective…

How to access and clean the extruder-pulley (MINI/MINI+)

How to replace a hotend PTFE tube (MK3S+/MK3S/MK2.5S/MMU2S)

Maintenance tips

How to replace a heatbreak/heatsink/heaterblock (MK3S+/MK3S/MK2.5S/MMU2S)

How to update firmware (MINI/MINI+)

How to trim PTFE tube - Original Prusa printers

How to replace a heatbed thermistor (MK3S+/MK3S/MK2.5S/MK2S)

How to replace a heaterblock/heatbreak (MINI/MINI+)

IPA pigment filter (CW1/CW1S)

The Original Prusa Curing and Washing Machine (CW1/S) uses isopropyl alcohol (IPA) to wash the uncured resin around the print model before curing it. The resin usually leaves pigment…

How to downgrade firmware (CORE One/+, MK4/S, MK3.9/S, MK3.5/S, XL)

Sometimes it is necessary to reinstall an older version of the firmware. The method to update the firmware only allows newer firmware versions to be flashed. To flash the same…

CW1 maintenance

To ensure that the CW1 remains in proper working order, keep the device clean, and never leave the tank with isopropyl alcohol inside of the device when the machine is off / not…

Replacing the PEI sheet on the (MK3S/MK3/MK2.5S/MK2.5)

How to replace a PTFE tube (MK3/MK2.5)

How to replace a hotend thermistor (MK3S/MK3S+)

How to replace the print display (SL1)

How to replace an IR-sensor (MK3S/MK3S+)

How to replace a heatbed thermistor (MINI/MINI+)

How to replace a hotend thermistor (MINI/MINI+)

How to replace a heatbreak/heaterblock/heatsink (MK3/MK2.5)

How to replace a hotend thermistor (MK2S)

How to trim PTFE tube - Multi Material

How to replace PSU on MK3 printers

How to post-process the printed parts

How to replace a heatsink (MINI/MINI+)

Replacing the PEI sheet on the MK2/S

Height adjustment of M.I.N.D.A./SuperPINDA sensor (MINI/+)

How to replace a print fan (MK3S/MK3S+)

How to replace a hotend heater (MINI/MINI+)

How to replace a print head PTFE tube (MINI/MINI+)

How to replace SuperPINDA (MINI/MINI+)

Changing or replacing the Prusa Nozzle

Replacing the Prusa Nozzle on your printer varies depending on the model of your printer. This article provides an overview of the different methods to replace the Prusa Nozzle,…

How to update firmware (MMU3)

When updating from the 1.0.6 to the 3.0.0 firmware version or above, go to LCD menu - Settings - MMU, and set it to ON. Updating the firmware is recommended for all users as every…

How to replace a hotend (MK3S/MK3S+)

How to replace a print fan (MINI)

How to replace a hotend fan (MINI)

How to replace a Buddy control board (MINI)

How to replace an extruder motor (MINI/MINI+)

PETG sheets (Enclosure)

The Original Prusa Enclosure has side panels made of PETG. See below some maintenance tips for the sheets. Cleaning The PETG sheets in your enclosure can be cleaned by washing…

How to replace a UV LED assembly (SL1)

How to replace SuperPINDA (MK3S/MK3S+)

How to replace a P.I.N.D.A. sensor (MK3S)

How to replace a heatbed (MINI/MINI+)

How to replace the power button (SL1/SL1S)

How to replace bearings on the X-axis (MINI/MINI+)

How to replace bearings on the Y-axis (MINI/MINI+)

How to replace bearings on the X-axis (MK3S+)

How to replace a blower fan (SL1)

How to replace bearings on the Y-axis (MK3S+)

How to replace an optical sensor (SL1)

How to replace the A64 board (SL1)

How to replace a Lid safety switch (CW1)

How to replace UV LED assembly (SL1S)

Fire Suppression system (Enclosure)

The Original Prusa Enclosure can have as an add-on a Self-contained tube-style BlazeCut Fire Suppression System. The system operates automatically and independently of any power…

How to replace the USB connector (SL1/SL1S)

How to replace the FEP film (SL1S)

How to disassemble the CW1

How to replace the print display (SL1S)

How to replace a filter (SL1/SL1S)

Changing or replacing the Nextruder Hotend

Replacing the Nextruder Hotend assembly on your printer may differ depending on the specific model you own. This article outlines various approaches for replacing the Nextruder…

How to replace a display (CW1)

How to replace a hotend heater (MK3S/MK3S+)

How to replace a UV LED fan (SL1S)

How to replace a blower fan (SL1S)

Nozzle replacement (HT90)

The Prusa PRO HT90 uses quick-swap REVO nozzles. To change a nozzle, go to More -> Nozzle change in the printer menu. If the nozzle is too hot at this point, you will be presented…

Changing the print head

The Prusa Pro HT90 supports two print head configurations. The default high flow print head handles materials up to 300°C. For industrial materials like PEI, PEKK, and PEEK, use…

Regular printer maintenance (MK3.5/S)

It is recommended to regularly take some time to maintain your printer. This should be done even if the printer is working perfectly. The inspection and maintenance of its various…

HEPA filter replacement (HT90)

The Prusa Pro HT90 has a HEPA filter in the upper part of the printer through which air passes from the printer into the room. The filter needs to be replaced every 600 print hours.…

How to update firmware (HT90)

The Prusa Pro HT90 has firmware installed during production. It is possible to update the firmware in three ways. Menu update Connect the printer to the internet network. Then…

Regular printer maintenance (HT90)

The Prusa Pro HT90 is engineered for maximum efficiency and reliability. However, it is still a mechanical device with components that require regular maintenance. Follow the guidelines…

Installing or changing the Nextruder V6 Nozzle Adapter

The Nextruder V6 Nozzle Adapter enables the use of V6-compatible nozzles on printers equipped with the Nextruder. Installing the Nextruder V6 Nozzle Adapter on your printer varies…

How to install the Nextruder V6 Nozzle Adapter (CORE One)

How to replace Heatbed Thermistor (CORE One)

How to replace Heatbed (CORE One)

How to replace the CoreXY plastic parts

Regular printer maintenance (CORE One/+)

It is recommended to regularly take some time to maintain your Prusa CORE One/+. This should be done even if the printer is working perfectly. Useful tools Besides the usual tools,…

MK3 Series Hotend Guide

Since 6/2025, the hotend for MK3 series printers comes as a universal package consisting of a hotend with pre-installed PTFE Tube compatible with MK3S+ or MK3.5/S printers, and…

How to replace a heatbed set (MINI/MINI+)

How to lubricate linear bearing rails (XL)

How to set up a Buddy3D Cam

How to replace a hotend assembly (CORE One)

How to replace a print fan (MK4S / MK3.9S)

How to lubricate the magballs (HT90)

How to replace Nextruder heatsink (XL Single-tool)

IPA pigment filter

How to install the Nextruder V6 Nozzle Adapter (XL single-tool)

Buddy3D Camera for CORE One Installation

How to replace the Prusa Nozzle (XL single-tool)

How to replace the side filament sensor (CORE One)

How to replace the Hotend assembly (XL single-tool)

Filament Guide addon (MK4S/MK4)

How to install the Nextruder V6 Nozzle Adapter (MK4/MK3.9)

Packing printer for transport - Original Packing Material (XL)

How to replace the Prusa Nozzle (MK4/MK3.9)

How to use Prusament Refill 900g

How to replace the door sensor (CORE One)

How to replace a Nextruder (XL single-tool)

How to replace the Prusa Nozzle (XL multi-tool)

How to replace a Z-axis motor (XL)

Packing the XL Multi-tool for return - Original Packing material

How to replace a heatbed tile and a heatbed tile cable (XL)

How to replace a print fan (XL single tool)

How to fix Modular bed error (HW solution)

How to replace Loveboard (MK4S/MK4/MK3.9S/MK3.9)

How to replace trapezoid nuts (XL)

How to clean the side filament sensor (XL)

How to change xLCD and xLCD cable (XL single-tool)

How to replace a Dwarf board (XL multi-tool)

How to replace Nextruder heatsink (XL Multi-tool)

How to replace a Dwarf board (XL single-tool)

How to replace the filament sensor (HT90)

How to replace the silver PSU with the black PSU

How to replace the Hotend assembly (XL multi-tool)

How to replace a hotend thermistor (XL Single-Tool)

How to replace Z motors (CORE One)

How to replace a Z-axis linear rail (XL)

How to replace a profile insert (XL)

How to replace the hotend fan (XL Multi-tool)

How to replace a PSU (XL)

How to replace a hotend heater (XL Single-Tool)

How to replace a hotend heater (MK4/MK3.9)

How to replace a hotend thermistor (MK4/MK3.9)

How to lubricate the coupler pins on Original Prusa XL (Multi-Tool)

How to replace a hotend fan (MK4 / MK3.9)

How to replace the xBuddy board (MK4/MK3.9/MK3.5)

How to replace the tch-profile-insert (XL)

How to replace a print fan (MK4 / MK3.9)

How to replace a hotend assembly (MK4 / MK3.9)

How to replace a Heatbed Thermistor (MK4/S, MK3.9/S, MK3.5/S)

How to replace the Sandwich Board (XL)

How to replace the rubber band on Original Prusa XL (Multi-tool)

How replace the CoreXY Cover Rear (Original Prusa XL)

How to install the Nextruder V6 Nozzle Adapter (XL Multi-Tool)

How to replace a XY motor (XL)

How to replace a hotend heatsink (MK4 / MK3.9)

How to replace xLCD (MK4/MK3.9/MK3.5)

Packing the XL Enclosure for return - Original Packing material

Unpacking the printer (HT90)

How to change the belt (XL)

How to replace the Prusa Nozzle (MK4S/MK3.9S)

How to use accelerometer (MK3.5/S)

How to replace a hotend assembly (MK4S / MK3.9S)

How to install the Nextruder V6 Nozzle Adapter (MK4S/MK3.9S)

How to install the Camera dummy module (HT90)

How to change the xLCD (XL)

How to replace the door (HT90)

How to replace the Prusa Nozzle (CORE One)

How to reverse the door orientation (CORE One)

How to pack the Prusa CORE One for return - Original Packing material

How to replace the main cable connector cover (XL)

Maintenance warning #31117 (CORE One) #26117 (MK4S) #13117 (MK4) #27117 (MK3.9S) #21117 (MK3.9) #28117 (MK3.5S) #23117 (MK3.5)

What happened? The Prusa CORE One/+, and the Original Prusa MK4/S, MK3.9/S, MK3.5/S can be equipped with an MMU3 upgrade kit. Having the MMU3 upgrade kit installed significantly…