Functional Description; Blade Inspection - Makita JS3201 Instruction Manual

FUNCTIONAL DESCRIPTION

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before adjusting or checking function
on the tool.
Switch action
1
013363
CAUTION:
Before plugging in the tool, always check to see
•
that the switch trigger actuates properly and
returns to the "OFF" position when released.
Switch can be locked in "ON" position for ease of
•
operator comfort during extended use. Apply
caution when locking tool in "ON" position and
maintain firm grasp on tool.
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
1
2
013364
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.
1. Switch trigger
2
2. Lock button
1. Gauge for
stainless:
2.5 mm (3/32")
2. Gauge for mild
steel: 3.2 mm
(1/8")
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.

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.
2
3
4
004679
Remove the blade securing bolts with the hex wrench
provided and then rotate or replace the blades.
3
013365
Install the upper blade and tighten the upper blade
securing bolt with the hex wrench. Press up on the
upper blade while tightening it.
5
mm
2 3.2
2
2.5
2
1.5
2 4.0
1. Hex wrench
1
2. Lower blade
3. Upper blade
securing bolt
4. Upper blade
1. Tighten
2. Upper blade
securing bolt
1
2
3. Upper blade
ga
10
13
17
9