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12.5.1 Feed Gear Debris
Service interval: every time you change filament spools
With filament removed from the extruder, open the idler bar. Visually inspect the teeth in the metal feed
gear for debris. Rotate the extruder by hand and inspect the full gear.
If you see debris in the teeth, use the toothbrush included in your toolkit to brush the debris out of the
teeth.
12.5.2 Gear Lash
Service interval: As needed (check with extruder empty of filament)
While spinning the extruder by hand, check for lash in the gears by gently reversing the direction you’re
turning the extruder. Observe the gears and make sure there isn’t a “dead spot” where one gear turns
but the other stays still. If you wiggle the extruder shaft back and forth you may be able to feel a small
tap or click if there is lash.
To fix gear lash, remove the extruder from the printer (see section 12.13).
Turn the extruder onto its back and loosen the 3 M3 screws the hold the motor onto the main assembly
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