Electronic Function - Makita SG1251 Instruction Manual

Switch action
CAUTION:
Before plugging in the tool, always check to see
•
that the switch trigger actuates properly and
returns to the "OFF" position when released.
1
015038
For tool with lock button
CAUTION:
Switch can be locked in "ON" position for ease of
•
operator comfort during extended use. Apply
caution when locking tool in "ON" position and
maintain firm grasp on tool.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
For continuous operation, pull the switch trigger, push in
the lock button and then release the switch trigger.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
For tool with lock-off button
CAUTION:
Do not pull the switch trigger hard without pressing
•
in the lock-off button. This can cause switch
breakage.
To prevent the switch trigger from being accidentally
pulled, a lock-off button is provided.
To start the tool, depress the lock-off button and pull the
switch trigger. Release the switch trigger to stop.
For tool without lock button / lock-off button
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.

Electronic function

The tools equipped with electronic function are easy to
operate because of the following features.
Constant speed control
Electronic speed control for obtaining constant speed.
Possible to get fine finish, because the rotating speed is
kept constant even under load condition.
Soft start
Soft-start feature minimizes start-up shock, and makes
the tool start smoothly.
1. Switch trigger
2
2. Lock button /
Lock-off button
Overload protector
When the tool would be employed over the admissible
load, it will stop automatically to protect the motor and
wheel. When the load will come to the admissible level
again, the tool can be started automatically.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before carrying out any work on the
tool.
Removing the diamond wheels
015039
Loosen and remove the bolt with the hex wrench.
015040
Open the blade case while holding the tool base.
NOTE:
The tool base will open at a stroke by the spring
•
force.
1
015053
Rotate the diamond wheels while pressing the shaft lock
until it engages.
Remove the lock nut by rotating it counterclockwise with
the lock nut wrench.
Remove the diamond wheels and space rings.
7
1. Bolt
1
1. Blade case
2. Tool base
1
2
1. Shaft lock
2. Lock nut
2
3. Lock nut wrench
3