MK Diamond MK-4000 Series - Manual (Page 26)

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The saw is equipped with a depth indicator and a depth Stop. The depth indicator tells you
approximately how deep you are in the cut. To set the indicator, you need to first lower the blade until
it is just touching the ground and then rotate the depth indicator knob to 0.
The depth Stop is used for several cuts at the same depth. it is set by finding the desired depth and
then turning the knob until it is tight. This will prevent cutting below the “locked” level to provide a con-
sistent depth with every cut.
MK-4000 SERIES OPERATION
DEPTH INDICATOR AND DEPTH STOP
Depth Indicator and Depth Stop
depth Stop
depth indicator
1. Follow general instructions outlined in the section Operating the Saw pages 20.
2. When deep sawing (more than 4”) or concrete with hard aggregate, sawing to full depth in
several cuts should be made in incremental steps of 1-1/2 to 2 inches until the desired depth of
cut is reached. In softer aggregates or asphalt, it may be possible to saw full depth in two passes.
3. Gradually move the speed control lever forward to increase the cutting speed. if the blade stalls in
the cut (which can happen when deep sawing) immediately raise blade from cut. If not done
at once, the belts will spin freely and burn. Check belts for proper tension and continue sawing at
a slower rate of speed.
4. On final pass, lower the blade until it hits the sub-base (sandy color will appear in the water being
discharged from the cut). Raise blade approximately 1/2” from bottom. The sand and gravel
particles of the sub-base may cause premature wear or damage to the saw blade.
5. it is common, on the final pass of the cut, for pavement to wedge blade, particularly on a hot day.
When this happens, immediately stop engine. if the blade is wedged, remove the Blade Shaft Bolt
and Outside Collar and move the saw away from the blade. To remove a wedged blade from the
concrete, use a jack hammer and carefully chip out concrete around the blade. (Pounding or
twisting the blade may cause severe damage).
6. Go slowly with a new blade until it “opens up” that is, until you can see and feel the diamonds.
7. Small corrections can be made by leaning on handles.
deep sawing is very hard on saws and blades. Experienced operators soon get a “feel” for the
saw and are constantly on guard to slow down when they hit excessive steel or hard aggregate.
STEP CUTTING