Functional Description - Makita 3612 Instruction Manual

11. Be careful of the bit rotating direction and the
feed direction.
12. Do not leave the tool running. Operate the tool
only when hand-held.
13. Always switch off and wait for the bit to come to
a complete stop before removing the tool from
workpiece.
14. Do not touch the bit immediately after operation;
it may be extremely hot and could burn your
skin.
15. Do not smear the tool base carelessly with thin-
ner, gasoline, oil or the like. They may cause
cracks in the tool base.
16. Use bits of the correct shank diameter suitable
for the speed of the tool.
17. Some material contains chemicals which may be
toxic. Take caution to prevent dust inhalation
and skin contact. Follow material supplier safety
data.
18. Always use the correct dust mask/respirator for
the material and application you are working
with.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product
(gained from repeated use) replace strict adherence
to safety rules for the subject product. MISUSE or
failure to follow the safety rules stated in this instruc-
tion manual may cause serious personal injury.

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Adjusting the depth of cut (Fig. 1)
Place the tool on a flat surface. Loosen the lock lever and
lower the tool body until the bit just touches the flat sur-
face. Press the lock lever down to lock the tool body.
Now lower the stopper pole until it makes contact with the
adjusting hex bolt. The stopper pole can be moved rap-
idly by depressing the fast-feed button. While pressing
the fast-feed button, raise the stopper pole until the
desired depth of cut is obtained. The depth of cut is equal
to the distance between the stopper pole and the adjust-
ing hex bolt. Stopper pole travel can be checked with the
scale (1 mm per graduation) on the tool body.
Minute depth adjustments can be obtained by turning the
stopper pole (1.5 mm per turn).
Now, your predetermined depth of cut can be obtained by
loosening the lock lever and then lowering the tool body
until the stopper pole makes contact with the adjusting
hex bolt.
CAUTION:
• Since excessive cutting may cause overload of the
motor or difficulty in controlling the tool, the depth of cut
should not be more than 20 mm at a pass when cutting
grooves. When you wish to cut grooves more than
20 mm deep, make several passes with progressively
deeper bit settings.
• Do not lower the knob too low. The bit will protrude
dangerously.
For the tool with knob (Fig. 2)
By turning the knob, the upper limit of the tool body can
be adjusted. When the tip of the bit is retracted more than
required in relation to the base plate surface, turn the
knob to lower the upper limit.
For the tool with nylon nut (Fig. 3)
The upper limit of the tool body can be adjusted by turn-
ing the nylon nut. Do not lower the nylon nut too low. The
bit will protrude dangerously.
Stopper block (Fig. 4)
The stopper block has three adjusting hex bolts which
raise or lower 0.8 mm per turn. You can easily obtain
three different depths of cut using these adjusting hex
bolts without readjusting the stopper pole.
Adjust the lowest hex bolt to obtain the deepest depth of
cut, following the method of "Adjusting depth of cut".
Adjust the two remaining hex bolts to obtain shallower
depths of cut. The differences in height of these hex bolts
are equal to the differences in depths of cut.
To adjust the hex bolt height, turn the hex bolts with a
screwdriver or wrench. The stopper block is also conve-
nient for making three passes with progressively deeper
bit settings when cutting deep grooves.
Switch action (Fig. 5 & 6)
For tool without lock-off button
CAUTION:
• Before plugging in the tool, always check to see that
the tool is switched off.
• Make sure that the shaft lock is released before the
switch is turned on.
• Hold the tool firmly when turning off the tool, to over-
come the reaction.
To start the tool, move the switch lever to the I (ON) posi-
tion. To stop the tool, move the switch lever to the
O (OFF) position.
For tool with lock-off button
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
"OFF" position when released.
• Make sure that the shaft lock is released before the
switch is turned on.
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.
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