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G0505 12
1
⁄2" Lean & Mean Portable Planer
-17-
SECTION 7: MAINTENANCE
Disconnect power from
the machine when per-
forming any mainte-
nance. Failure to do this
may result in serious per-
sonal injury.
!
Regular periodic maintenance on your Model
G0505 Planer will ensure its optimum perfor-
mance. Make a habit of inspecting your planer
each time you use it. Check for the following con-
ditions and repair or replace when necessary:
• Loose mounting bolts, extension wings, or
handles, or excessive play in the depth-of-cut
adjustment.
• Worn switch.
• Worn or damaged cords or plugs.
• Dull or damaged cutterhead knives.
• Any condition that could hamper the safe
operation of the machine.
General
The cutterhead knives on the Model G0505 are
extremely sharp. Brushing your finger along
the edge can result in a severe cut. Take
extreme caution when doing any of the adjust-
ments involving the cutterhead knives. Wear
thick gloves anytime it is necessary to manual-
ly rotate the cutterhead assembly.
Knife Sharpening
Knife sharpness is one of the most important fac-
tors in getting good results with the planer. Knives
can be used for a long time if care is taken in
checking the condition of the wood before putting
it into the machine. The biggest problem will come
from wood with nails, pebbles, or other hard
embedded objects. These items will nick or chip
the knives, causing permanent damage. Another
wear factor is sand, grit, or other dirt on the sur-
face of the wood. At the speed the cutterhead is
rotating, these types of surface contamination can
have a very abrasive effect.
This planer has knives with a grind angle of 40˚
which is a configuration that should suit most gen-
eral planing needs. The optimal grind or bevel
angle is a compromise between effective cutting
(the smaller the angle, the better the cutting
action) and edge life (the larger the angle, the
more the edge is supported, and thus, the longer
it will last).
For the best results, have your planer knives
sharpened by a professional sharpening service
that has the grinding and measurement equip-
ment to assure that the knife cutting geometry is
maintained at optimum levels. Resharpening is a
procedure that requires some care and precision;
otherwise, a set of blades can be easily ruined.
Also, knives should always be ground as a set so
they can be properly matched. Unequal material
removal can result in an unbalanced cutterhead
which can affect not only planing surface quality
but ultimately the life of the cutterhead bearings.
To avoid downtime, we recommend having an
extra set of knives for your planer (Model H5038
in the Grizzly catalog or website).
Please refer to Section 8: Service Adjustments for
complete detail on the removal and reinstallation
of planer knives.