Handleiding Makita JS3201 (pagina 5 van 36) (Duits, Engels, Pools)

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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.

• 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

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 mm ga

Steel up to 400 N/mm

3.2 10

Steel up to 600 N/mm

2.5 13

Steel up to 800 N/mm

1.5 17

Aluminum up to 200 N/mm

4.0 9

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.

Fig.3

Remove the blade securing bolts with the hex wrench

provided and then rotate or replace the blades.

Fig.4

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.5

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.6

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.7

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.

Thickness gauge combinations

Material thickness

2.3 mm (14 ga.) 2.5 mm (13 ga.) 3.2 mm (10 ga.)

Thickness gauge

combinations

1.0 +1.5 1.0 +1.5 1.5 + 2.0

006427

OPERATION

CAUTION:

• When cutting, always place the shear on the

workpiece so that the material cut away is

positioned on the right side to the operator.

• Hold the tool firmly with one hand on the main

handle when performing the tool.

Holding material

Fig.8

The materials for cutting should be fastened to the

workbench by means of workholders.

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