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Iron powder on the collet nut, collet or shaft
screw may cause the collet nut to be diffi cult to
rotate. (Fig. 9)
Be sure to remove any powder before attaching
or detaching the tip tool.
Push
Lock button
Loosen
Attachment
Collet nut
Fig. 8
Collet nut
Collet
Shaft screw
Fig. 9
NOTE
Very occasionally, the tip tool may be diffi cult to
detach from the collet.
If this happens, with the collet nut loosened,
press the end of the tool lightly against a hard
object. (Fig. 10)
5. Balance adjustment of the tip tool
After attaching the tip tool, operate the grinder
at low speed. If the balance is not right, follow
the procedure below to adjust the balance.
Loosen the collet nut while pressing the lock
button.
Next, rotate the tip tool by 1/4 and tighten the
collet nut.
Operate the grinder at low speed and check the
balance. If the balance is right, adjustment is
completed.
If the balance still is not right, detach the tip
tool, the collet nut and collet and re-attach
them. If the tip tool is still not balanced after
several such attempts, check for deformation
or wear of the tip tool or deformation of the
collet. If worn or deformed, replace the tip tool
or collet.
Keeping the wheel straight, screw it onto the
thread of the screw-type mandrel as far as the
fl ange.
Screw-type mandrel
Flange
Fig. 7 (a)
2. How to use the wheel mandrel (Fig. 7 (b))
Remove the screw in the end of the mandrel
with a fl athead screwdriver and attach the
cutting wheel or sanding disc.
Screw in end
Wheel mandrel
Fig. 7 (b)
3. How to use the drum mandrel (Fig. 7 (c))
A 60-grit sanding band is fi tted to the drum
mandrel when it leaves the factory.
Loosen the screw in the end of the mandrel with
a screwdriver to remove/attach the sanding
band.
After attaching the sanding band, tighten the
screw securely.
Drum mandrel
Sanding band
Screw in end
Fig. 7 (c)
4. Attach the tip tool to the grinder
Rotate the collet nut by hand while pressing the
lock button to further depress the lock button.
In this state, the shaft is locked and the collet
nut can be loosened or tightened. (Fig. 8)
To attach the tip tool, insert the tip tool as far as
it will go and tighten the collet nut securely.
To detach the tip tool, the collet nut can usually
be rotated by hand, though occasionally it may
be tight.
If the collet nut is tight, use the provided collet
spanner to loosen it.