Functional Description - Makita 5903R Instruction Manual

Additional safety warnings
1. Use extra caution when cutting damp wood,
pressure treated lumber, or wood containing
knots. Maintain smooth advancement of tool without
decrease in blade speed to avoid overheating the
blade tips.
2. Do not attempt to remove cut material when
blade is moving. Wait until blade stops before
grasping cut material. Blades coast after turn off.
3. Avoid cutting nails. Inspect for and remove all
nails from lumber before cutting.
4. Place the wider portion of the saw base on that
part of the workpiece which is solidly supported,
not on the section that will fall off when the cut is
made. If the workpiece is short or small, clamp it
down. DO NOT TRY TO HOLD SHORT PIECES BY
HAND! (Fig. 5)
5. Before setting the tool down after completing a
cut, be sure that the guard has closed and the
blade has come to a complete stop.
6. Never attempt to saw with the circular saw held
upside down in a vise. This is extremely danger-
ous and can lead to serious accidents. (Fig. 6)
7. Some material contains chemicals which may be
toxic. Take caution to prevent dust inhalation
and skin contact. Follow material supplier safety
data.
8. Do not stop the blades by lateral pressure on the
saw blade.
9. Do not use any abrasive wheels.
10. Only use the saw blade with the diameter that is
marked on the tool or specified in the manual.
Use of an incorrectly sized blade may affect the
proper guarding of the blade or guard operation
which could result in serious personal injury.
11. Keep blade sharp and clean. Gum and wood pitch
hardened on blades slows saw and increases poten-
tial for kickback. Keep blade clean by first removing it
from tool, then cleaning it with gum and pitch
remover, hot water or kerosene. Never use gasoline.
12. Wear a dust mask and hearing protection when
use the tool.
13. Always use the saw blade intended for cutting
the material that you are going to cut.
14. Only use the saw blades that are marked with a
speed equal or higher than the speed marked on
the tool.
15. (For European countries only)
Always use the blade which conforms to
EN847-1.
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 depth of cut (Fig. 7)
CAUTION:
• After adjusting the depth of cut, always tighten the lever
securely.
Loosen the lever on the depth guide and move the base
up or down. At the desired depth of cut, secure the base
by tightening the lever.
For cleaner, safer cuts, set cut depth so that no more
than one blade tooth projects below workpiece. Using
proper cut depth helps to reduce potential for dangerous
KICKBACKS which can cause personal injury.
Bevel cutting (Fig. 8)
For model 5705R, 5903R, 5103R
Loosen the clamping screws in front and back, and tilt the
tool to the desired angle for bevel cuts (0° – 45°). Secure
the clamping screws tightly in front and back after making
the adjustment.
For model 5143R
Loosen the clamping screw in front and tilt the tool to the
desired angle for bevel cuts (0° – 60°). Secure the
clamping screw tightly in front after making the
adjustment.
Sighting
For 5705R (Fig. 9)
For 5903R, 5103R (Fig. 10)
For straight cuts, align the A position on the front of the
base with your cutting line. For 45° bevel cuts, align the B
position with it.
For 5143R (Fig. 11)
Align your sight line with either the 0° notch for straight
cutting or the 30° notch for 30° angle cuts or the 45°
notch for 45° angle cuts or the 60° notch for 60° angle
cuts.
Riving knife adjustment (Fig. 12)
Use the hex wrench to loosen the hex socket head bolt
for the riving knife adjustment, then raise the lower blade
guard. Move the riving knife up or down over the two pro-
tuberances for settings indicated in the figure, so as to
obtain the proper clearance between the riving knife and
saw blade.
CAUTION:
• Ensure that the riving knife is adjusted such that:
The distance between the riving knife and the toothed
rim of the saw blade is not more than 5 mm. The
toothed rim does not extend more than 5 mm beyond
the lower edge of the riving knife.
Switch action (Fig. 13)
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.
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