I purchased a version 1 Lulzbot Mini about a year ago. I have only ever printed PLA. I have averaged 8 hours of printing a day over the last three months.
The extrusion is now having issues. The extrusion is very slow. When I extrude 20 mm very little filament comes out. Manually applying a little pressure on the filament does make it extrude more normally.
Here are somethings I have tried…
I made sure the tensioners were fully screwed tight.
I put in a fresh spool of Hatchbox 3mm PLA and made sure the settings were correct. Filament width 3mm and extrusion heat 210.
I then bumped the temperature up to 215.
I totally took the print head off to closely inspect both the gripper wheel (teeth seem good) and the pressure wheel (spins freely). I checked for cracks but both seems to be in good condition.
Any advice? What do I try next?