Maintenance - Makita UH550D Instruction Manual

time, make sure that the chip receiver does not contact
branch catcher at the top of the shear blades.
Fig.13
At this time, the chip receiver needs to be installed so
that its hooks fit into grooves in the shear blade unit.
Fig.14
To remove the chip receiver, press its lever on both sides
so that the hooks are unlocked.
Fig.15
CAUTION:
The blade cover (standard equipment) cannot be
•
installed on the tool with the chip receiver being
installed. Before carrying or storing, uninstall the
chip receiver and then install the blade cover to
avoid blade exposure.
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 the
•
battery cartridge is removed 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.
NOTE:
Before smearing the blade, remove the chip
•
receiver.
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.
Removing or installing shear blade
CAUTION:
Before removing or installing shear blade, always
•
be sure that the tool is switched off and the battery
cartridge is removed.
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.16
NOTE:
Be careful not to get your hands dirty as grease is
•
applied in the shear blade driving area.
Remove the under cover.
Fig.17
Remove the plate.
Fig.18
Set the crank at the angle as shown in the figure with a
slotted bit screwdriver.
Fig.19
Remove two screws from the shear blades and the
shear blade unit will be taken out.
Fig.20
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), plate, 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.21
Overlap the oval hole in the upper blade with that in the
lower one.
Fig.22
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.23
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
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