Functional Description; Operation - Makita JS3200 Instruction Manual

8. Do not touch the blade or the workpiece
immediately after operation; they may be
extremely hot and could burn your skin.
9. Avoid cutting electrical wires. It can cause serious
accident by electric shock.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product (gained
from repeated use) replace strict adherence to safety
rules for the subject product. MISUSE or failure to
follow the safety rules stated in this instruction
manual may cause serious personal injury.

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Switch action (Fig. 1)
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
"OFF" position when released.
To start the tool, simply pull the switch trigger. Release the
switch trigger to stop.
For continuous operation, pull the switch trigger and then
push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
Permissible shearing thickness (Fig. 2)
The groove on the yoke serves as a thickness gauge for
shearing mild or stainless steel plate. If the material fits
within the groove, it is shearable.
The thickness of materials to be sheared depends upon
the type (strength) of the material. The maximum shearing
thickness is indicated in the table below in terms of
various materials. Attempting to shear materials thicker
than indicated will result in tool breakdown and/or
possible injury. Keep within the thickness shown in the
table.
Max. cutting capacities
Steel up to 400 N/mm
Steel up to 600 N/mm
Steel up to 800 N/mm
Aluminum up to 200 N/mm
006426
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
6
mm ga
2
3.2 10
2
2.5 13
2
1.5 17
2
4.0
Blade inspection
Before using the tool, check the blades for wear. Dull,
worn blades will result in poor shearing action, and the
service life of the tool will be shortened.
The service life of the blades varies in terms of the
materials to be cut and the fixed blade clearance. Roughly
speaking, a blade can cut about 500 m of 3.2 mm mild
steel with one cutting edge (total 2,000 m with four cutting
edges).
Rotating or replacing blades
Both the upper and lower blades have four cutting edges
on each side (the front and back). When the cutting edge
becomes dull, rotate both the upper and the lower blades
90° to expose new cutting edges.
When all eight edges are dull on both the upper and lower
blades, replace both blades with new ones. Each time
blades are rotated or replaced, proceed as follows.
Remove the blade securing bolts with the hex wrench
provided and then rotate or replace the blades. (Fig. 3)
Install the upper blade and tighten the upper blade
securing bolt with the hex wrench. Press up on the upper
blade while tightening it. (Fig. 4)
After securing the upper blade, be sure that there is no
gap left between the upper blade and the beveled surface
of the blade holder. (Fig. 5)
Then install the lower blade like the upper blade while
adjusting the clearance between the upper blade and
lower blades. When performing this adjustment, the upper
blade should be in the lowered position. (Fig. 6)
First, semi- tighten the lower blade securing bolt, then
insert the thickness gauge for the desired clearance. The
cutting thickness is indicated on the thickness gauge so
the combinations shown in the table below should be
used. Work the lower blade positioning bolt on the yoke
until the clearance is such that the thickness gauge
moves only with some difficulty. Then firmly tighten the
lower blade securing bolt. Finally, tighten the hex nut to
secure the lower blade positioning bolt. (Fig. 7)
Thickness gauge combinations
Material thickness
Thickness gauge
combinations
006427

OPERATION

Holding material (Fig. 8)
The materials for cutting should be fastened to the
9
workbench by means of workholders.
Shearing method (Fig. 9)
For smooth cuts, tip the tool slightly backward while
advancing it.
2.3 mm 2.5 mm 3.2 mm
(14 ga.) (13 ga.) (10 ga.)
1.0 + 1.5 1.0 + 1.5 1.5 + 2.0