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3D Systems, Inc.
9. Using a cotton swab, pierce a hole into the foil seal.
10. Use this cotton swab to apply grease to the rubber seal inside the
handle.
11. Screw the tube back onto the handle. Unlock the rod and push it all
the way in.
12. Prime the grease gun by pumping the handle several times.
NOTE:
Dark grease used to manufacture the grease gun may come out.