72
Spin the gears by hand and make sure they spin freely with no binding. If there are tight spots the gears are too
tight; slide the motor down just a little bit.
Once the gears mesh well all the way around, firmly tighten all 3 screws.
Reinstall the extruder onto the printer.
11.4.3 Spring Preload
With filament loaded into the extruder, measure the distance from the face of the spring grabber to the underside
of the washer. This distance should be 0.43 inches.
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