Hitachi P 20SB Handling Instructions Manual page 5

2. Cutter blade assembly:
CAUTIONS
Prior to assembly, thoroughly wipe off all swarf
accumulated on the cutter blade.
(1) Turn the flat surface of the cutter block sideways,
and assemble the adjusted cutter blade as shown
in Fig. 7. Ensuring that the leaf spring on the cutter
block is correctly fitted to the hole on the rear plate,
push the back of the cutter blade with a fingertip
in the direction indicated by the arrow, until the
edge of the back metal is properly fitted to the
cutter block surface. Correct installation is illustrated
in Fig. 8.
Surface of cutter
block
Correct installation
Erroseous installation
(2) Place the blade holder on the completed assembly,
as shown in Fig. 10, and fasten it with the three
bolts. Ensure that the bolts are securely tightened.
Edge of back metal
Fig. 7
Fig. 8
Fig. 9
Blade holder
Fig. 10
(3) Turn the cutter block over, and set the other side
in the same manner.
3. Adjustment of cutter blade height:
CAUTION
As the set gauge has been accurately factory
adjusted, never attempt to loosen it.
(1) After attaching the back metal to the cutter blade,
temporarily fasten them together with machine
screws, as shown in Fig. 11
(2) Insert the set gauge plate spring into the hole on
the back metal and heavily push the plate spring
in the direction indicated by the arrow in Fig. 12
until it snaps into the correct position.
Align the back metal end with an
extruded portion
(3) Holding the set gauge with the blade edge facing
downward as shown in Fig. 13, loosen the
temporarily fastened machine screws and lightly
push the cutter blade with a thumb until the cutter
blade gently touches the plate.
Lightly push
with a thumb Machine screw
CAUTION
Do not push the blade with excessive pressure.
Excessive pressure could cause maladjustment
of the blade height.
Machine screw
Fig. 11
Fig. 12
Plate
Fig. 13
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