Makita UH4570 Manuel D'instructions page 9

NOTE:
• Check the chip receiver for secure installment before
use.
• Never try to uninstall the chip receiver by an excessive
force with its hooks locked in the blade unit grooves.
Using the excessive force may damage it.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
Cleaning the tool
Clean out the tool by wiping off dust with a dry or soap-
dipped rag.
CAUTION:
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Blade maintenance
Smear the blade before and once per hour during
operation using machine oil or similars.
After operation, remove dust from both sides of the blade
with wired brush, wipe off it with a rag and then apply
enough low-viscosity oil, such as machine oil etc. and
spray-type lubricating oil.
CAUTION:
• Do not wash the blades in water. Failure to do so may
cause rust or damage on the tool.
NOTICE:
If the parts other than the shear blades such as the
crank are worn out, ask Makita Authorized Service
Centers for parts replacement or repairs.
Removing or installing shear blade
CAUTION:
• Before removing or installing shear blade, always be
sure that the tool is switched off and unplugged.
• When replacing the shear blade, always wear gloves
without removing blade cover so that hands and face
does not directly contact the blade. Failure to do so
may cause personal injury.
NOTE:
• Do not wipe off grease from the gear and crank. Failure
to do so may cause damage to the tool.
• For specific way of removing and installing shear
blades refer to the reverse of a package for accessory
shear blades.
Removing the shear blades
Reverse the tool and loosen four screws. (Fig. 20)
NOTE:
• Be careful not to get your hands dirty as grease is
applied in the shear blade driving area.
Remove the under cover. (Fig. 21)
Remove the gear housing cover. (Fig. 22)
Set the crank at the angle as shown in the figure with a
slotted bit screwdriver. (Fig. 23)
Remove two screws from the shear blades and the shear
blade unit will be taken out. (Fig. 24)
CAUTION:
• Return the gear to the original position in such a
manner as it was installed if it should be taken away by
mistake.
Installing the shear blade
Prepare 4 removed screws (For under cover), 2 screws
(For shear blade), gear housing cover, under cover, and
new shear blades.
Adjust the crank position as shown in the figure. At this
time, apply some grease provided with new shear blades
to the periphery of the crank. (Fig. 25)
Overlap the oval hole in the upper blade with that in the
lower one. (Fig. 26)
Take out the blade cover from the old shear blades and fit
it onto the new ones for easy handling during the
replacement of blades. (Fig. 27)
Place the new shear blades on the tool so that the oval
holes in the shear blades fit onto the crank. Overlap the
holes in the shear blades with the screw holes in the tool
and then secure them with two screws. (Fig. 28)
Check the crank for smooth turn with a slotted bit
screwdriver. (Fig. 29)
Install the gear housing, under cover on the tool. Tighten
the screw firmly.
Remove the blade cover and then turn on the tool to
check it for proper movement.
NOTE:
• When the shear blades does not operate properly,
there is a poor fit between the blades and crank. Redo
from the beginning.
Storage
The hook hole in the bottom of the blade cover is
convenient for hanging the tool from a nail or screw on the
wall. (Fig. 30)
Put the blade cover on the shear blades so that the blades
are not exposed. Store the tool out of the reach of children
carefully.
Store the tool in the place not exposed to water and rain.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by
Makita Authorized Service Centers, always using Makita
replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Blade cover
• Hook complete
• Shear blade assembly
• Waist cord hook
• Arm cord hook
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