Grizzly G0689 - Manual (Page 27)

g0689 13" planer
-25-
Knife Replacement
the condition of the knives on the Model g0689
planer will affect the precision of the cut. during
operation, watch for the following signs of dulled
knives.
• raised grain occurs as a result of dull knives
hammering at the surface of the wood.
• a "fuzzy" appearance on the surface of the
wood occurs as a result of dull knives tearing,
rather than cutting the wood fibers.
• grooves occur as a result of nicks along the
knife edge.
• difficulty feeding the workpiece into the
planer.
if any of these signs become apparent during use,
the knives must be reversed or replaced. do not
attempt to sharpen the knives.
Tools Needed Qty
hex Wrench 4mm .............................................. 1
To remove the knives:
1. diSConnECt planEr FroM poWEr!
2. remove the cap screws from the knife
guard, then remove the guard ( figure 29).
The cutterhead knives on the Model G0689
are extremely sharp. Brushing your finger
along the edge can result in a severe cut.
Take extreme caution when doing any of
the adjustments involving the cutterhead
knives. Wear heavy leather gloves any-
time it is necessary to manually rotate the
cutterhead assembly.
figure 29. removing knife guard (top and
side covers removed for clarity).
Knife guard
Cap Screws
3. Wearing heavy leather gloves, carefully turn
the cutterhead towards you until the safety
latch engages and the cutterhead no longer
turns (
figure 30).
figure 30. Exposed cutterhead.
Cutterhead
gib
Safety
latch
To maintain accurate and consistent plan-
ing results, we do not recommend sharpen-
ing the knives. Instead, replace both knives
when they get dull.