55
Figure 51 Head Components
Figure 52 Toggle bar in neutral position
4. Remove any excess material found around the head area.
a. Clean out as much of the material as possible using needle nose
pliers, a probe, or equivalent tool.
Note: Material fed to the tip can sometimes jam causing a build-up of material
under the head cover.
CAUTION: The end of the tip where the material enters is called the extrusion
tube. Extrusion tubes are fragile. Use care when working in this area so as to
avoid damage to the tubes.
Support side
idler wheel
Model side idler
wheel
Toggle spring
Heater block
Drive wheel
Toggle bar
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