¶ Overview
¶ Location
The hot end is located inside the toolhead. Remove the toolhead rear cover to replace it.
¶ Terminology
Different from our official term, some people may use the following terms to describe this component:
(1) Hotend
(2) Extruder
(3) Nozzle
(4) Nozzle heatsink assembly
¶ Practicality
Difficulty：★★☆☆☆ (easy)
Estimated time：15mins
¶ Where to Purchase
¶ Tools Required
(1) H2.0 hex key
(2) New hot end
¶ Procedure
¶ Step 1. Unload filament
(1) Tap the filament info section on the home page.
(2) Tap "Unload mode".
(3) Choose the target toolhead (e.g., Toolhead 1) and tap "Unload".
(4) Wait for the printer to finish unloading, then tap "OK".
(5) Return to the home page, tap the upper-left corner to check the nozzle temperature, and wait until it cools below 40 °C.
¶ Step 2. Replace the hot end
Before continuing, please power off the machine and unplug it！
(1) Insert a H2.0 hex key into the center hole between the 2 locating pins. Push until you hear a click sound to detach the toolhead from the swapper.
(2) Remove the toolhead rear cover.
(3) Disconnect the hot end cables. You can press the locking clip with the H2.0 hex key to release it.
(4) Remove the 2 screws with the H2.0 hex key, replace the hot end, and tighten the screws.
(5) Reconnect the cables:
- 1 – Ceramic heater cable (left port)
- 2 – Thermistor cable (right port)
(6) Route the cables properly: press both into the cable clip, and fold the thermistor cable end before pressing it into the extruder unit slot.
(7) Reinstall the toolhead rear cover.
¶ Step 3. Park toolhead
(1) Use an H2.0 hex key to adjust the toolhead latch until two red markings are visible.
- Left：Toolhead 1 – latch to the left limit
- Right：Toolhead 2/3/4 – latch to the right limit
(2) Align the latch hole with the locating pin on the swapper and push the toolhead inward until it stops.
(3) Keep pushing inward and move the toolhead slightly so the 2 side locating pins fit into the bracket holes.
¶ Reach out to Snapmaker Support
After following the troubleshooting steps, if you find it difficult to resolve your issue, kindly submit a support ticket through https://snapmaker.formcrafts.com/u1-troubleshooting-request and share your troubleshooting results with some pictures/videos.
Our dedicated support team will be more than willing to assist you in resolving the issue.