Hitachi CR 24DV Handling Instructions Manual page 43

with UC24YFB is taken out, wait for a minimum of
3 seconds before reinserting it to continue charging.
If the battery is reinserted within 3 seconds, the
battery may not be properly charged.
PRIOR TO OPERATION
1. Mounting the blade
This unit employs a detachable mechanism that
enables mounting and removal of saw blades
without the use of a wrench or other tools.
(1) Turn on and off the switching trigger several times
so that the lever can jump out of the front cover
completely. Thereafter, turn off the switch and
remove the battery (Fig. 4).
CAUTION
Be absolutely sure to keep the switch turned off
and the battery removed to prevent any accident.
(2) Push the lever in the direction of the arrow mark
shown in Fig. 5 marked on the lever (Fig. 5).
(3) Insert the saw blade all the way into the small slit
of the plunger tip with the lever pushing. You can
mount this blade either in the upward or downward
direction (Fig. 6, Fig. 7).
(4) When you release the lever, the spring force will
return the lever to the correct position automatically
(Fig. 8).
(5) Pull the back of the saw blade two or three times
by hand and check that the blade is securely
mounted. When pulling the blade, you will know
it is properly mounted if it clicks and the lever
moves slightly (Fig. 9).
CAUTION
When pulling the saw blade, be absolutely sure to
pull it from the back. Pulling other parts of the blade
will result in an injury.
2. Dismounting the blade
(1) Turn on and off the switching trigger several times
so that the lever can jump out of the front cover
completely. Thereafter, turn off the switch and
remove the battery (Fig. 4).
CAUTION
Be absolutely sure to keep the switch turned off
and the battery removed to prevent any accident.
(2) After you have pushed the lever in the direction
of the arrow mark shown in Fig. 5 and secured it,
turn the blade so it faces downward. The blade
should fall out by itself. If the blade doesn't fall out,
pull it out by hand.
CAUTION
Never touch the saw blade immediately after use.
The metal is hot and can easily burn your skin.
WHEN THE BLADE IS BROKEN
Even when the saw blade is broken and remains
inside the small slit of the plunger, it should fall
out if you push the lever in the direction of the
arrow mark, and face the blade downward. If it
doesn't fall out itself, take it out using the procedures
explained below.
(1) If a part of the broken saw blade is sticking out
of the small slit of the plunger, pull out the protruding
part and take the blade out.
(2) If the broken saw blade is hidden inside the small
slit, hook the broken blade using a tip of another
saw blade and take it out (Fig. 10).
MAINTENANCE AND INSPECTION OF SAW BLADE
MOUNT
(1) After use, blow away sawdust, earth, sand, moisture,
etc., with air or brush them away with a brush, etc.,
to ensure that the blade mount can function
smoothly.
(2) As shown in Fig. 11, carry out lubrication around
the blade holder on a periodic basis by use of
cutting fluid, etc.
NOTE
Continued use of the tool without cleaning and
lubricating the area where the saw blade is installed
can result in some slack movement of the lever due
to accumulated sawdust and chips. Under the
circumstances, pull a rubber cap provided on the
lever in the direction of an arrow mark as shown
in Fig. 12 and remove the rubber cap from the lever.
Then, clean up the inside of the blade holder with
air and the like and carry out sufficient lubrication.
The rubber cap can be fitted on if it is pressed firmly
onto the lever. At this time, make certain that there
exists no clearance between the blade holder and
the rubber cap, and furthermore ensure that the
saw-blade-installed area can function smoothly.
CAUTION
Do not use any saw blade with a worn-out blade
hole. Otherwise, the saw blade can come off,
resulting in personal injury (Fig. 13).
3. Moving the base
Loosen the set screw and move the base forward,
as shown in Fig. 14, Fig. 15. Tighten the set screw
slightly, ensure the base does not move back and
forth, and firmly tighten the set screw. Ensure that
the base does not contact the blade.
4. Confirm that the battery is mounted correctly
HOW TO USE
CAUTION
Do not carry tools with your finger on the switch.
A sudden startup can result in an unexpected injury.
Be careful not to let sawdust, earth, moisture, etc.,
enter the inside of the machine through the plunger
section during operation. If sawdust and the like
accumulate in the plunger section, always clean it
before use.
Do not remove the front cover.
Be sure to hold the body from the top of the front
cover. (refer to Fig. 4)
During use, press the base against the material
while cutting.
Vibration can damage the saw blade if the base is
not pressed firmly against the workpiece.
Furthermore, a tip of the saw blade can sometimes
contact the inner wall of the pipe, damaging the
saw blade.
Select a saw blade of the most appropriate length.
Ideally, the length protruding from the base of the
saw blade after subtracting the stroke quantity should
be larger than the material (see Fig. 17 and
Fig. 19).
If you cut a large pipe, large block of wood, etc.,
that exceeds the cutting capacity of a blade; there
is a risk that the blade may contact with the inner
wall of the pipe, wood, etc., resulting in damage.
(Fig. 18, Fig. 20)
English
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