Maintenance - Makita PC1100 Instruction Manual

To change the amount of stock (concrete) removed,
loosen the hex socket head bolts on the grip holder
with the hex wrench. Raise or lower the front roller to
adjust the gap between it and the diamond wheel.
The difference is the stock removal amount. Then
secure the hex socket head bolts very carefully.
NOTE:
Maximum stock removal should be less than 2.5 mm.
Tilting base for smoother planing
For smooth removal of a given surface roughness or
texture, tilting the base is helpful. Use the hex wrench
to loosen the two hex socket head bolts securing the
base on either side. (Fig. 6)
Use a screwdriver to lower the three screws on the
base by turning rightward. (Fig. 7)
Use a square or ruler to obtain the desired base
angle in relation to the diamond wheel. Then secure
carefully the hex socket head bolts on either side of
the base. Adjust center of base near wheel so that it
is on the same level as the wheel. (Fig. 8)
NOTE:
After base adjustment, turn the three screws leftward
on base until the hands are flush with the back side
of the base. Turn gently or base adjustment will be
thrown off. (Fig. 7)
Base adjustment to compensate for wheel
wear (Fig. 6 & 7)
With long use, the diamond wheel will wear and thus
create a gap with the planing surface so that perfor-
mance becomes poor. Check the tool after every 4 or
5 hours of use. If the wheel and base surfaces are
not aligned, loosen the hex socket head bolts secur-
ing the base. Turn the screws on the base to the right
and adjust the base so as to be level with the wheel
surface. Retighten the bolts and then gently turn the
screws to the left until flush with the back side of the
base. The screws should not come loose during
operation.
Planing in corners (Fig. 9 & 10)
Flush planing of corners is possible after first remov-
ing the dust cover.
Turn dust cover rightward until it stops, light toward
you to remove.
Dust cover adjustment (Fig. 11)
The dust cover should be either flush with the dia-
mond wheel surface or very slightly above (when tool
is inverted) 0.5 mm. Suction/pickup will be poor if they
are not approximately on the same level.
To adjust the dust cover, grip it on the outside; turn
right to raise, left to lower.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Replacement of carbon brushes (Fig. 12 & 13)
Replace carbon brushes when they are worn down to
the limit mark. Both identical carbon brushes should
be replaced at the same time.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by
a Makita Authorized Service Center.
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