Operation - Makita JS8000 Instruction Manual

Use the hex wrench to loosen the three screws which
secure the cutting head. Pull the cutting head straight out
to remove it with turning it left and right alternately.
Removing shear blades
1
2
3
4
Remove the two screws (middle and front) which hold the
cutting head. When removing the middle screw, be care-
ful not to lose the spacer. Then the blades can be
removed easily. When removing the blades, hold the
blades, the spacer and the pivot sleeve so that they do
not fall from the cutting head.
Installing shear blades
1
4
2
5
Install the spacer and the pivot sleeve and tighten the
three screws after inserting the center blade, side blades
into the cutting head. In this process, the screw heads
should be protruding 2 - 3 mm (1/16"-1/8") from the cut-
ting head surface.
If you will tighten the screws excessively, the cutting head
cannot be installed to the tool.
NOTE:
• Side blade edge can be used in four ways by repo-
sitioning them left-to-right and end-to-end as shown
in the figure.
The following describes time and procedure
to change blades.
A) When the two side blades have rounded
about half their width, they can be reposi-
tioned left-to-right for new cutting edges.
B) When both edges of each side blade have
rounded about half their width, reposition
them end-to-end for two new cutting
edges.
C) When all edges have worn down, obtain
replacements from Makita authorized or
factory service center.
007432
1. Side blade
5
2. Center blade
3. Screws
4. Side blade
5. Cutting head
007433
1. Side blade
2. Center blade
3. Side blade
4. Pivot sleeve
5. Spacer
3
D) When side blades are worn out, the center
blade should also be replaced.
2
1
Installing cutting head
1
2
3
CAUTION:
• Secure the cutting head firmly. Otherwise it can
rotate during operation and can cause serious
injury.
Insert the cutting head into the tool with turning it left and
right alternately. Then tighten the three screws with the
hex wrench.

OPERATION

CAUTION:
• This tool is intended for cutting fiber cement mate-
rial only, with a thickness of 5/16" or less. Do not
cut other materials or stack-cut. Doing so will dam-
age the tool and void warranty.
• Wear gloves. Otherwise it can cause injury.
Secure the workpiece firmly. Move the tool forward keep-
ing the side blades flush with the workpiece surface.
5
007435
1. Reposition end-
to-end
2. Reposition left-
to-right
007436
1. Hex wrench
2. Tighten
3. Screws
007434