Maintenance - Makita DSC250 Instruction Manual

Protection lock
When the protection system works repeatedly, the tool
will lock and the battery indicator shows the state as
table 3.
Table 3
Battery indicator
Protection lock works
Overheat protection for tool
When the tool is overheated, the tool stops auto-
matically and the battery indicator shows the state as
table 4.
In this situation, let the tool cool before turning the tool
on again.
Table 4
Battery indicator
Tool is overheated
TIPPED SAW REPLACEMENT
PROCEDURE
WARNING:
Switch off the tool and remove
the battery before replacing the blade, to prevent
accidental operation resulting in serious personal
injury.
► Fig.10: 1. Tipped Saw Cover 2. Bolt 3. Washer
4. Tipped Saw Guide 5. Tipped Saw
6. Output Gear (convex part)
7. Tipped Saw Cover Retaining Bolt
How to remove the Tipped Saw
Remove the Tipped Saw
► Fig.11: 1. Push (Lock Button)
1. Remove the Tipped Saw Cover Retaining Bolts (4
pieces) with a hexagonal wrench.
2. Remove the Tipped Saw Cover.
3. Insert a hexagonal wrench into the bolt retaining
the Tipped Saw Guide.
4. Push in the Lock Button and using the hexagonal
wrench as a handle, rotate the Tipped Saw blade until it
is prevented from further rotation by the Lock Button.
CAUTION:
Ensure that the Lock Button
is completely pushed in. If not, the hexagonal
wrench can rotate and may cause personal injury.
5. With the Tipped Saw locked, turn the hexagonal
wrench counterclockwise to loosen and remove the bolt
and washer.
:On :Off :Blinking
:On :Off :Blinking
12 ENGLISH
6.
Remove the Tipped Saw Guide and the Tipped
Saw.
How to replace the Tipped Saw
CAUTION:
Use only Makita supplied Tipped
Saw. If reusing a Tipped Saw, ensure it is not
worn, chipped or damaged.
CAUTION:
Clean and remove all debris and
dirt from the Tipped Saw and parts. Debris and
dirt can unbalance the Tipped Saw making it
wobble during cutting.
Replace the Tipped Saw
► Fig.12: 1. Push (Lock Button)
1. Fit the Tipped Saw over the Output Gear, making
sure that the slot in the flange is properly aligned with
the key.
2. Replace the Tipped Saw Guide.
3. Replace the Bolt and Washer.
4. Push in the Lock Button completely to prevent the
Tipped Saw rotating and tighten the Bolt with the hex-
agonal wrench.
CAUTION:
Ensure that the Lock Button
is completely pushed in. If not, the hexagonal
wrench can rotate and may cause personal injury.
5. Replace the Tipped Saw Cover.
6. Tighten the Tipped Saw Cover Retaining Bolts (4
pieces) with a hexagonal wrench.

MAINTENANCE

CAUTION:
Always ensure that the tool is
switched off and the battery is removed before
attempting to perform inspection or maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
► Fig.13: 1. Dust Cover
Remove the Dust Cover from the air vent and clean it
for proper air circulation.
CAUTION:
Clean the Dust Cover when it
becomes clogged. Continuing operation with a
clogged dust cover may damage the tool.