Functional Description; Operation - Makita 7104L Instruction Manual

FUNCTIONAL DESCRIPTION

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before adjusting or checking function
on the tool.
Adjusting depth of cut
Fig.1
Loosen the wing bolt on the stopper. Move the stopper
to the desired position and tighten the wing bolt. When
tightened, the tip of the wing bolts should contact the flat
surface of the stopper pole. The numbers indicated on
the stopper pole are in cm units (3 mm per graduation).
Switch action
Fig.2
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 prevent the switch trigger from being accidentally
pulled, a lock-off button is provided. To start the tool,
push in the lock-off button and pull the switch trigger.
Release the switch trigger to stop.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before carrying out any work on the tool.
Installing or removing cutter chain
Fig.3
WARNING:
Always be sure that the tool is switched off and
•
unplugged before installing or removing
cutter chain.
Always close the chain cover after installing,
•
removing or adjusting the cutter chain.
To install the cutter chain, open the chain cover. Loosen the
hex bolt securing the chain bar and the adjusting screw.
Orient the cutters in the direction of the arrow on the tool
(rotational direction). Attach the cutter chain to the sprocket
first and then to the chain bar. Semi-tighten the hex bolt.
Fig.4
Turn the adjusting screw to increase the tension on the cutter
chain. Pull the middle of the cutter chain lightly. When there is
a clearance of approx. 5 - 6 mm between the chain bar and
the cutter chain, the tension on the cutter chain is adequate.
Fig.5
After adjusting the tension, tighten the hex bolt firmly to
secure the chain bar. Additionally tighten slightly the
adjusting screw. Close the chain cover.
To remove the cutter chain, follow the installation
procedures in reverse.
Securing tool to workpiece
Fig.6
Fig.7
Loosen the vise lever and move the rear vise backward. Place
the tool on the workpiece so that the front vise contacts the
side of the workpiece. Move the rear vise forward until the
distance between the rear vise and the workpiece is 3 - 8 mm.
Tighten the vise lever to secure the rear vise. Move the tool so
that the "0" on the indication plate is aligned with the cutting
line (A). Push the lever (A) down fully to secure the workpiece.
Turn the setting handle until the front edge of the yellow
indicator plate is aligned with the cutting line (B).
Fig.8

OPERATION

Fig.9
Grasp firmly the grips on either side. Switch on the tool and
wait until the cutter chain attains full speed. Then release
the hook and lower the tool head to cut in the workpiece.
Do not apply excessive pressure to the tool. This may not
only decrease the working efficiency but also cause a
dangerous reaction. Feed slowly at the beginning of a
cutting operation, at the time of hole breakthrough and
when cutting a knot in the workpiece. After cutting, gently
raise the tool head until you can hook the tool head back
onto the hook. Then switch off the tool. Raise the lever (A)
and remove the tool from the workpiece.
WARNING:
Always hook the tool head back onto the hook
•
when not operating the tool.
Never attempt to cut a twisted or warped
•
workpiece which the tool is not secured firmly to.
Adjusting indicator plate and indication plate
The yellow indicator plate and indication plate are
the factory adjusted for the standard equipped cutter chain
16.5 mm. If the alignment is off, for some reason, or
when using another size cutter chain, loosen the screws
and adjust the yellow indicator plate and indication plate.
Enlarging hole
1. Transverse (width) enlargement
Fig.10
A hole can be enlarged transversely by adjusting the
gauge plate. Max. expansion of hole width is 15 mm.
Example:
When cutting a hole 25 mm wide using a
cutter chain 16.5 mm, proceed as follows:
•
•
6
Push the lever (B) away from you. Loosen
the hex bolts securing the gauge plate.
Adjust the gauge plate so that the
travel distance (D) is 8.5 mm; that is, 25
mm - 16.5 mm = 8.5 mm. Tighten the
hex bolts to secure the gauge plate.