Hitachi P 20SB Handling Instructions Manual page 4

Knob
Scale
2. Surface cutting:
Rough cutting should be accomplished at large
cutting depths and at a suitable speed so that
shavings are smoothly ejected from the machine.
To ensure a smoothly finished surface, finish cutting
should be accomplished at small cutting depths and
at low feeding speed.
3. Beginning and ending the cutting operation:
As shown in Fig. 2, place the front base of the
planer on the material and support the planer
horizontally. Turn ON the power switch, and slowly
operate the planer toward the leading edge of the
material. Firmly depress the front half of the planer
at the first stage of cutting, as shown in Fig. 3,
depress the rear half of the planer at the end of
the cutting operation. The planer must always be
kept flat throughout the entire cutting operation.
Beginning of
cutting operation
End of cutting
operation
3
Mark
Fig. 1
Fig. 2
Fig. 3
4. Precaution after finishing the planing operation:
When the planer is suspended with one hand after
finishing the planing operation, ensure that the
cutting blades (base) of the planer do not contact
or come too near your body. Failure to do so could
result in serious injury.
CUTTER BLADE ASSEMBLY AND
DISASSEMBLY AND ADJUSTMENT OF
CUTTER BLADE HEIGHT (FOR
RESHARPENABLE BLADE TYPE)
1. Cutter blade disassembly:
(1) As shown in Fig. 4, use the accessory box wrench
to withdraw the three bolts used to retain the cutter
blade, and remove the cutter blade holder.
Box wrench
Bolt
(2) As shown in Fig. 5, slide the rear side of the cutter
blade in the direction indicated by the arrow to
disassemble the cutter blade.
CAUTIONS
Be careful not to injure your hands.
It is not necessary to disassemble the back metal
from the cutter blade. (See Fig. 6)
Disassembling the back metal from the cutter
blade is to be made only at grinding the cutter
blade.
Machine screw
Back metal
Blade
holder
Loosen
Fig. 4
Fig. 5
Cutter blade
Fig. 6