Grizzly G0890 Owner's Manual page 40

Machine Operation (Cont.)
Symptom Possible Cause
Fuzzy grain. 1. Wood may have high moisture content or
2. Dull knives/inserts.
Long lines or ridges 1. Nicked or chipped knife/inserts.
that run along length
of board.
Uneven cutting` 1. Feeding workpiece too fast.
marks, wavy surface,
2. Knives not installed evenly/inserts not
or chatter marks
across face of board.
3. Worn cutterhead bearings.
Glossy surface. 1. Knives/inserts are dull.
2. Feeding workpiece too slow.
3. Cutting depth too shallow.
If workpiece twists in 1. Feed rollers not parallel with table.
machine.
-38-
surface wetness.
properly installed.
Possible Solution
1. Check moisture content is below 20% and allow to
dry if moisture is too high.
2. Replace knives (Page 27) or have them
professionally sharpened; rotate/replace inserts
(Page 29).
1. Replace knives (Page 27) or have them
professionally sharpened; rotate/replace inserts
(Page 29).
1. Slow down feed rate.
2. Adjust knives with knife gauge (Page 27); remove
inserts, properly clean mounting pocket and re-
install (Page 29).
3. Replace cutterhead bearings.
1. Replace knives (Page 27) or have them
professionally sharpened; rotate/replace inserts
(Page 29).
2. Increase feed rate.
3. Increase depth of cut.
1. Adjust feed rollers (Page 40).
G0890/G0891 (Mfd. Since 06/19)