Adjusting Riving Knife - Makita LH1040 Instruction Manual

ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing or removing saw blade
CAUTION:
• Always be sure that the tool is switched off and
unplugged before installing or removing the blade.
• Use only the Makita socket wrench provided to install
or remove the blade. Failure to do so may result in
overtightening or insufficient tightening of the hex bolt.
This could cause an injury.
Secure the top table at the topmost position.
Lock the handle in the raised position by pushing in the
stopper pin. (Fig. 16)
To remove the blade, first loosen the clamping screw so
that the lower blade guard B is lowered as shown in the
figure. (Fig. 17)
Then use the socket wrench to loosen the hex bolt hold-
ing the center cover by turning it counterclockwise. Raise
the lower blade guard A and center cover while pushing
the lever nearby the handle to the left. (Fig. 18)
Press the shaft lock to lock the spindle, use the socket
wrench to loosen the hex bolt clockwise. Then remove
the hex bolt, outer flange and blade. (Fig. 19)
To install the blade, mount it carefully onto the spindle,
making sure that the direction of the arrow on the surface
of the blade matches the direction of the arrow on the
blade case. Install the outer flange and hex bolt, and then
use the socket wrench to tighten the hex bolt (left-
handed) securely counterclockwise while pressing the
shaft lock. (Fig. 20 & 21)
NOTE:
• When installing a saw blade, be sure to insert it from
the outside of the blade guard B at first and then raise it
so that the blade is finally placed in the blade guard B.
CAUTION:
• The ring 25.0 mm or 30 mm in outer diameter is fac-
tory-installed onto the spindle. Before mounting the
blade onto the spindle, always be sure that the correct
ring for the arbor hole of the blade you intend to use is
installed onto the spindle. (Fig. 22)
Return the lower blade guard A and center cover to its
original position. Then tighten the hex bolt clockwise to
secure the center cover. Raise the blade guard B as far
as it will go and tighten the clamping screw firmly while
holding it in the raised position. Lower the handle to
make sure that the lower blade guards move properly.
Make sure shaft lock has released spindle before making
cut.

Adjusting riving knife

Before adjusting the riving knife, loosen the two levers by
turning counterclockwise and press the top table on the
right side nearby the riving knife to its lowered position.
Then secure the top table by firmly re-tightening the two
levers as shown in the figure. (Fig. 23)
There must be a clearance of about 4 – 5 mm between
the riving knife and the blade teeth. Adjust the riving knife
accordingly by loosening two hex bolts counterclockwise
with the hex socket wrench and measuring the distance.
Tighten the hex bolts securely, and then check to see that
the top blade guard works smoothly before cutting.
(Fig. 24)
The riving knife has been installed before shipment from
the factory so that the blade and riving knife are in a
straight line. (Fig. 25)
CAUTION:
• If the blade and riving knife are not aligned properly, a
dangerous pinching condition may result during opera-
tion. Make sure the riving knife is positioned between
both outer ends of the blade teeth when viewing from
the top. You could suffer serious personal injury while
using the tool without a properly aligned riving knife. If
they are not aligned for any reasons, always have Mak-
ita authorized service center repair it.
• Don't remove the riving knife.
Installing and adjusting rip fence
1. Install the rip fence on the table so that the rip fence
holder engages with the guide rail. Tighten the
clamping screw (B) of the rip fence firmly clockwise.
2. Loosen the clamping screw (A).
3. Slide the rip fence and secure it so that the far end
from you of the rip fence is aligned with the point at
which the front edge of saw blade just appears from
top surface of the workpiece. The purpose of this
adjustment is to reduce risk of kick-back toward
operator that cut piece from the workpiece is
pinched between the saw blade and rip fence and
finally pushed out toward operator. The line 3 varies
by thickness of workpiece or the table level. Adjust
the position of the rip fence according to the thick-
ness of the workpiece.
After adjusting the rip fence, tighten the clamping
screw (A) firmly. (Fig. 26 & 27)
NOTE:
• There are four patterns to position the rip fence as
shown in the figure. (Fig. 28) Rip fence has two slits on
its sides, one slit with an elevated fringe nearby on the
same side and the other without it. Use the surface of
rip fence with this fringe facing the workpiece only
when cutting off into a piece of a thin workpiece.
• To change the rip fence pattern, remove the rip fence
from the rip fence holder by loosening the clamping
screw (A) and change the facing of the rip fence to the
rip fence holder so that the rip fence faces the rip fence
holder according to your work as shown in the figure.
(Fig. 29)
Insert the square nut on the rip fence holder into the
back end of either slit of the rip fence so that they fit as
shown in the figure.
To change from the pattern A or B to the pattern C or D,
or in adverse case, remove the square nut, washer and
clamping screw (A) from the rip fence holder, then posi-
tion the clamping screw (A), washer and square nut on
the opposite position of the rip fence holder compared to
the original position. Tighten the clamping screw (A)
securely after inserting the square nut of the rip fence
holder into the rip fence slit.
Insert the square nut on the rip fence holder into the back
end of either slit of the rip fence so that they fit as shown
in the figure.
17