Hitachi P 20 SB Handling Instructions Manual page 5

(2) As shown in Fig. 5, remove the carbide blade by
sliding it with the attached box wrench.
Carbide blade (Double edged blade type)
CAUTION
Be careful not to injure your hands.
2. Carbide blade assembly:
CAUTION
Prior to assembly, thoroughly wipe off all swarf
accumulated on the carbide blade.
(1) As shown in Fig. 6, lift set plate (B) and insert the new
carbide blade between cutter block and set plate (B).
(2) As shown in Fig. 7, mount the new carbide blade by
sliding it on the set plate (B) so that the blade tip
projects by 1mm from the end of the cutter block.
(3) As shown in Fig. 8, fix the bolts at the blade holder
after blade replacement has been completed.
Fig. 5
Carbide blade
(Double edged
blade type)
Set plate (B)
Fig. 6
Fig. 7
Fig. 8
(4) Turn the cutter block over, and set the other side in
the same manner.
3. Adjustment of carbide blade height:
CAUTION
If the carbide blade's heights are inaccurate after
above procedures have been completed, carry out
the procedures described below.
(1) As shown in Fig. 4, use the box wrench to loosen the
three bolts used to retain the carbide blade, and
remove the blade holder.
(2) As shown in Fig. 9, after removing the carbide blade,
slide set plate (B) in the direction indicated by the
arrow to disassemble set plate (B).
(3) Loosen the 2 screws holding on the carbide blade
and set plate (A), set plate (B).
(4) As shown in Fig. 10, 11, press the turned surface of
set plate (A) to the wall surface (B) while adjusting
the carbide blade edge to the wall surface a of the set
gauge. Then, tighten them with the 2 screws.
Set plate (B)
Set plate (A)
Turned
surface
Set plate (B)
Fig. 9
Machine screw
Fig. 10
Carbide blade
(Double edged blade type)
Wall surface a
Set gauge
Wall surface b
Fig. 11
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