Challenge CHAMPION 305 Instructions And Parts Manual page 55

3. Adjust center (2) screws until snug - not tight to eliminate the air gap between the knife bar
and gib. Tighten those (2) jam nuts.
4. Place the machine into knife down adjustment mode. See Operating instructions for your
machine's model.
5. Adjust the bottom two screws the same way the middle screws were adjusted. Tighten the
jam nuts.
6. Start the machine. The knife should return to the up position. Shut the machine off.
7. Adjust the upper (2) gib adjusting screws and tighten the jam nuts.
8. Turn the power back on and cycle the knife several times. Recheck the gibs (repeat steps 2-6
as necessary).
9. Don't over-tighten the gibs.
10. If the knife bar and gibs get scored, remove only the burrs by scraping and then sanding
smooth.
12.0 Adjustments
55