Installing Or Removing Grass Shear Blades - Makita DUM166 Manual De Instrucciones

Adjusting the shearing height (Fig. 6)
Changing the position of holding the change lever allows
three-stepped setting for sheared grass height (10 mm,
20 mm, 30 mm).
To change setting, tilt the change lever for the base frame
position and with the change lever tilted move it up or
down along the tool surface until the protrusion on base
frame fits in one of the holes in the tool and release it.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.
Installing or removing blade cover
CAUTION:
• Be careful not to contact the shear blade when
installing or removing the blade cover. Contacting the
shear blade may cause personal injuries. (Fig. 7 & 8)
Slide the blade cover from the tool's side until the shear
blade completely hides itself and then push in it lightly
towards the tool from the front.
To remove the blade cover, take the above installation
procedure in reverse.
Installing or removing base frame
CAUTION:
• Before installing or removing base frame, be sure to
install the blade cover.
• When installing or removing base frame, take care that
your fingers are not be pinched between the tool and
base frame. (Fig. 9)
To remove the base frame, upset the tool and take it out
of the groove grabbing its bottom. (Fig. 10)
To install the base frame, fit the protrusion of base frame
near the change lever into the hole for the sheared grass
height setting. With the base frame so fitted, pull the lower
part of base frame and fit the other part of the base frame
in the groove in the tool.

Installing or removing grass shear blades

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before installing or
removing shear blades. Failure to switch off and
remove the battery cartridge from the tool may result in
serious injury from accidental start-up.
• 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. (Fig. 11)
Remove the base frame and place the tool upside down.
14
CAUTION:
• Before placing the tool upside down, be sure to remove
the base frame. (Fig. 12)
To remove the shear blade, press the locking lever and
with the locking lever pressed turn the undercover
counterclockwise until the symbol
aligned with the symbol  on the locking lever. (Fig. 13)
Take out the undercover, shear blade and crank in order
from the tool. (Fig. 14)
To install the grass shear blade, prepare the crank,
undercover and new grass shear blade. (Fig. 15)
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. 16)
Adjust the three pin position so that these pins are lined
up at right angle in relation to the basic alignment line on
the tool housing. (Fig. 17)
Fit the crank with its recessed part facing upwards onto
the pins. At this time, apply a small amount of grease to
the periphery of the crank using grease that the shear
blades as optional accessory are provided with or that
remains inside gear housing. (Fig. 18)
Overlap the oval hole in the upper blade with that in the
lower one. Move the shear blades so that the hole in the
base plate of shear blades are positioned in the center of
these overlapped oval holes. (Fig. 19)
Turn the shear blades upside down and install it so that
the pins on the tool fit in the hole in the shear blades.
Make sure that the shear blades are set in place securely
as far as they reach the base plate. (Fig. 20)
Place the undercover so that the symbol
undercover is aligned with the symbol  on the locking
lever. (Fig. 21)
Press the undercover down and turn the undercover
clockwise while pressing it down until the symbol
the label is aligned with the symbol  on the locking lever
(the undercover is completely locked.). (Fig. 22)
At this time, make sure that the locking lever fits in the
groove in the undercover.
Remove the blade cover and then turn on the tool to
check it for proper movement.
NOTE:
• When the shear blades do not operate properly, there
is a poor fit between the blades and crank. Redo from
the beginning.
OPERATION
WARNING:
• Keep hands away from blades.
CAUTION:
• Smear the blade before and once per hour during
operation using machine oil or the like.
• Avoid operating the tool under the scorching sunlight
as much as practicable. When operating the tool, be
careful of your physical conditions.
• Hold the tool with one hand. Do not hold the front bulge
of the tool as a grip. (Fig. 23)
Turn the tool on after adjusting the shearing height and
hold it so that the foot of the tool rest on the ground. Then
gently move the tool forward into the area to be cut.
(Fig. 24)
on the undercover is
on the
on