Adjusting Riving Knife - Makita LH1040 Instruction Manual

Adjusting riving knife

Fig.23
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.
There must be a clearance of about 4 - 5 mm between
the riving knife and the blade teeth. Adjust the riving
knife accordingly by
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 operation. 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 Makita
authorized service center repair it.
Don't remove the riving knife.
•
Installing and adjusting rip fence
Fig.26
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 thickness of the workpiece.
After adjusting the rip fence, tighten the clamping
screw (A) firmly.
Fig.27
NOTE:
There are four patterns to position the rip fence as
•
shown in the figure. Rip fence has two slits on its
sides, one slit with an elevated fringe nearby on
loosening two hex
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.
Fig.28
NOTE:
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
bolts
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.
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 position 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.
Fig.29
The rip fence is factory adjusted so that it is parallel to
the blade surface. Make sure that it is parallel. To check
to be sure that the rip fence is parallel with the blade.
Lower the table to the lowest position so that the blade
appears at the topmost position from the table. Mark
one of the blade teeth with a crayon. Measure the
distance (A) and (B) between the rip fence and blade.
Take both measurements using the tooth marked with
the crayon. These two measurements should be
identical If the rip fence is not parallel with the blade,
proceed as follows:
Fig.30
(1) Turn two adjusting screws counterclockwise.
Fig.31
Fig.32
(2) Shift the back edge of the rip fence slightly to
right or left until it becomes parallel with the
blade.
(3) Tighten the two screws on the rip fence firmly.
CAUTION:
Be sure to adjust the rip fence so that it is parallel
•
with the blade, or a dangerous kickback condition
may occur.
Be sure to adjust the rip fence so that it does not
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contact the top blade guard or saw blade.
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