Z Axis motors very hard to turn. - Assembly and first prints troubleshooting https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/ Prusa3D Forum Discussion Board en-US Sat, 11 Apr 2026 14:56:18 +0000 wpForo 60 RE: Z Axis motors very hard to turn. https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/#post-776243 Thu, 01 Jan 2026 18:05:27 +0000 Thanks. 

]]> Assembly and first prints troubleshooting MoparmAARk https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/#post-776243 RE: Z Axis motors very hard to turn. https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/#post-776182 Thu, 01 Jan 2026 05:18:52 +0000 Prusa chat is the access to the prusa helpdesk team, If you contact them, they will help you!

Prusa Chat, is usually available via a 'chat'  window in the bottom right hand corner of most Prusa website windows. NOTE! the chat window appears about 3 or 4 seconds after the web page loads, and the chat service is not available today, (New Years Day 2026)

 

regards Joan

]]> Assembly and first prints troubleshooting JoanTabb https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/#post-776182 Z Axis motors very hard to turn. https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/#post-776165 Wed, 31 Dec 2025 23:02:46 +0000 My Z Axis motors, on my new MK4S kit, are very hard to turn by hand. After trying all of the adjustments, I have removed them from the printer and no change.  Everything else passed all the tests and printing was excellent until I printed a tall (80 mm) print which had a slight layer shift, then realigned itself. I have shut the printer down in case using it like this could cause damage. Ideas? If I need replacement motors, how would I reach PRUSA warranty service? TIA

]]> Assembly and first prints troubleshooting MoparmAARk https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-assembly-and-first-prints-troubleshooting/z-axis-motors-very-hard-to-turn/#post-776165