Sharpening The Blades - Hitachi P 20SD Handling Instructions Manual

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(2) Place the blade holder on the completed
assembly, as shown in Fig. 9, and fasten it with
the three bolts. Ensure that the bolts are securely
tightened.
Bolt
(3) Turn the cutter block over, and set the opposite
side in the same manner.
3. Adjustment of blade height:
(1) Loosen the 2 screws holding on the blade and
the set plate (A).
(2) Press the turned surface of the set plate (A) to
the wall surface b while adjusting the blade edge
to the wall surface a of the set gauge. Then,
tighten them with the 2 screws. (Fig. 10, 11)
Blade
Set splate (A)
Turned
surface
Blade holder
Fig. 9
Machine
screw
Fig. 10
Wall surface a
Set gauge
Wall surface b
Fig. 11

SHARPENING THE BLADES

Use of the accessory Blade Sharpening Ass'y is
recommended for convenience.
1. Use of Blade Sharpening Ass'y
As shown in Fig. 12, two blades can be mounted
on the blade sharpening ass'y to ensure that the
blade tips are ground at uniform angles. During
grinding, adjust the position of the blades so that
their edged simultaneously contact the dressing stone
as shown in Fig. 13.
Blade
2. Blade sharpening intervals
Blade sharpening intervals depend on the type of
wood being cut and the cutting depth. However,
sharpening should generally be effected after each
500 meters of cutting operation.
3. Dressing Stone
When a water dressing stone is available, use it after
dipping it sufficiently in water since such a dressing
stone may be worn during grinding works, flatten
the upper surface of the dressing stone as often as
necessary.
Bolt
Fig. 12
Fig. 13
4

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