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6.0
OPERATIONS
CLEANING OUT EXISTING JOINTS:
6.1
Follow all pre-operating instructions in section 5.0.
6.2
The machine should be unplugged from electricity before start-
ing this operation.
WARNING: Never attempt to start the engine with the diamond blade
inserted in a joint or previous cut. The blade will turn as soon as the MARK
III is started. This could damage the blade or cause the MARK III to jump
backwards.
6.3
Set the blade depth adjustment handle to the lowest point.
(See Figure 9)
6.4
Remover the blade guard cover plate
6.5
Loosen, counterclockwise, the blade nut and remove it along
with one of the two spacers. The inner arbor nut and one spacer will
remain in place.
WARNING: If the blade you are using has a "5/8-7/8" knockout (brass
bushing), remove it so that the arbor of the blade is set at 7/8"
Ensure the proper direction of the blade being used. This ma-
6.6
chine rotates the blade in an up-cut rotation which is counterclockwise.
6.7
Place the blade on top of the spacer that is already on the ma-
chine and line up the arbor hole.
6.8
Place the Outer blade spacer on top of the blade and line up the
arbor hole.
6.9
Insert the shank of the Blade nut through the spacers and blade
and thread onto the shaft of the grinder and tighten the nut with moderate
force. Over tightening will cause problems when it's time to change the
blade.
6.10
Raise the blade depth adjustment to it's highest point, replace
the blade guard cover plate.
WARNING: Do not twist the blade in the cut. Never attempt to cut any
pattern or follow any joint that is not a straight line. Do not force the blade
forward. These actions could damage the blade and MARK III unit.
VACUUM HOSE ATTACHMENT:
6.11
The vacuum port is designed to be used with the 2" cuff that is
standard on most industrial vacuums in the industry. The hose is meant
to have a snug fit to prevent it from falling off during normal operation.
*Cold weather will make the hose more difficult to slip over the vacuum
port.
O P E R AT I O N & PA R T S
Surface Prep
Division
Figure 9 - MARK III SAWS blade depth setting
WARNING: Beware that after releasing the lever, the blade will continue
spinning for several seconds. Keep a firm hold on the handle grips and
maintain control of the machine until the blade completely stops.
6.12
This machine is intended to be used with a vacuum with 200cfm
or more at all times. There is no instance where this machine should be
used without a vacuum or with water.
SETTING THE BLADE DEPTH
6.13
Determine how deep you want the blade in the joint. An 8"
blade will get a maximum of 2" depth and a 7" blade will get a maximum
of 1.5" depth.
6.14
The accurate way: Lay the saw on its side in the same position
you would to change the blade. Lower the blade until it is approximately
where you want it. Measure with a tape measure or ruler to confirm the
depth you want. Move the Brass "depth stop" thumb screw into the hole
that coincides with the depth adjustment to prevent the blade from being
lowered further than you want it. The "fine adjustment" knob on the left
side of the blade depth adjustment assembly can be screwed in or out to
make small adjustments to compensate for blade wear.
6.15
The quick way: With the saw "off", lower the blade on a flat
surface lifting the front wheels off the ground. The distance between the
bottom of the wheel and the ground will be the approximate depth of cut
+/- 1/8".
WARNING: It is important to verify the depth of cut immediately after start-
ing, and periodically during the job. If you are cutting deeper than you
panned, you will use a lot more joint fill material than you had intended.
P: 877-817- 6687 F: 813-621-7125
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sales@ussaws.com
Each notch is 1/8"
9
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