Flashforge Invertor II User Manual page 28

(4-11) Tap [Tool]-[Unload] and the extruder starts heating up.
4-12
、
(4-12) After the extruder reaching 220℃, the printer will sound a beep to prompt you
to unload the filament from the extruder. Press the spring presser, press down the
filament for about three seconds and gently pull the filament out.
Note: Do not pull out the filament with force as it will damage the gears. If the
melted filament has cooled down in the extruder, please repeat the steps above.
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