Sharpening Blades; Replacing Blades - Craftsman 351.217240 Operator's Manual

WARNING: Turn the switch to "Off" position and
unplug jointer/planer from power source before pro-
ceeding to do maintenance work.
CHECKING FOR WORN BLADES
Condition of blades will affect precision of cut. If blade
wear is not observed when checking the blade height,
the quality of cut will indicate the blade condition. Dull
blades will tear rather than sever wood fiber. A raised
grain will occur when dull blades pound on wood where
there is difference in density. A raised ridge will be pro-
duced where the blades have been nicked.
SHARPENING BLADES
Refer to Figure 18.
The blades can be honed individually by whetting them
with a fine sharpening stone. Make sure oilstone is flat
and is not worn. To sharpen blades:
• Partially cover the stone with paper to protect the
table top.
• Position infeed table so stone will contact blade
along its beveled surface.
• Stroke the stone across blade from one side to other
while stone is also moved slightly in the direction of
feed.
• Make sure to do the same number of strokes on
each place.
If the blades are nicked they must be replaced or
reground. They can be reground several times until they
become 13/16" wide.
NOTE: Many shops do not have capabilities to resur-
face blades. Yellow pages should list "Sharpening
Services" or "Tool Grinding."
Figure 18 - Sharpening Blades
Never install unbalanced blades or reground blades
less than 13/16" wide.
REPLACING BLADES
Refer to Figures 19 and 20.
• Unplug the jointer/planer from power source and turn
the switch to "OFF" position.
• Block the blade guard from closing down.
Blade Clam
Cutter
Clamp
_Cutter Guard
Figure 19 - Block Blade Guard
• Loosen and remove three blade lock screws secur-
ing blade and blade clamp
• Lift blade and blade clamp from cutterhead
• Clean any sawdust and resin buildup from cutter-
head and blade clamp
• Place blade clamp against the replacement blade
and replace in cutterhead
• Secure blade and blade clamp using three blade
lock screws Do not tighten blade lock screws
NOTE: Check blade height at both ends of blade (see
Adjusting Blade Height, page 7)
• Tighten blade lock screws
• Recheck blade adjustment and make sure blade is
still level with outfeed table
• Repeat the procedure to replace the other blade
• Remove the scrap wood and release blade guard
• Make sure all the blade lock screws are tight and
snug
Blade
Cutterhead "_4k
__"'Blade Clamp
Blade Lock ScrewJJ_'_
Figure 20 - Replacing Blades
ADJUSTING BLADE GUARD
CAUTION: Do not lubricate the pivot point of the blade
guard. Oil and lubricating products may contain chemi-
cals that can damage and/or destroy blade guard or
other plastic parts.
The blade guard needs adjustment or spring replace-
ment if it does not cover the cutterhead when released.
To adjust or replace spring:
• Lay the jointer/planer on the side so that the switch
is facing the roof.
• Loosen and remove screw and wavy washer on the
base that secure the blade guard.
• Slide out blade guard.
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