Replicator 2: Loading Filament - support.makerbot.com
Go to the LCD panel and select Utilities > Change Filament > Load. The MakerBot Replicator 2 will start to heat your extruder. When the extruder is heated, the LCD panel will prompt you to load the filament into the extruder. Click through the message until your MakerBot Replicator 2 asks you to press the M when you see plastic extruding.
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