MK Diamond MK-3000 Series - Manual (Page 25)

25
MK-3000 SERIES OPERATION
WARNING
The blade is spinning whenever the saw is running. Raise the blade as high as possible when ma-
neuvering so that the blade will not strike the pavement.
Dry cutting blades have been specially designed for use with concrete saws. Ensure that the blade
you are using is clearly marked for dry cutting.
When dry cutting, it is important to keep the air filter clean. Check the condition of the filter at least
every four (4) hours of operation. Clean the pre-filter (wash in soapy water and re-oil) and change the
paper filters as soon as it becomes clogged. Concrete dust is very abrasive and will quickly damage
internal engine parts, causing loss of compression and eventual engine failure.
Saw only as deep as the specifications and job conditions require. Remember airflow helps to cool
the blade during dry cutting. Cutting too deep with one pass, or exerting excessive forward or side
pressure can be dangerous. Step cut in increments of 1 inch (25 mm) or less, for the best results.
If reinforced abrasive blades are used for cured concrete, it is usually better to saw only 1 inch deep
per pass. If deeper cuts are required, cut in multiple passes.
Thinner Diamond Blades are especially advantageous when cutting dry.
MANEUVERNG THE SAW
DRY CUTTING
WET CUTTING
The water used on the blade is to provide coolant during cutting and to flush the concrete cutting from
the cut.
SPEED CONTROL-LEVER USE AND ADJUSTMENT
Move the saw forward by pushing the lever away from the operator and move the saw in reverse by
pulling the lever toward the operator. The further you push this lever, the faster the saw travels.
This saw is driven by a hydrostatic transmission. To engage the transmission, PULL the Engagement
Handle up and turn to either direction to lock (Figure 14). To disengage the transmission, twist the
Engagement Handle and PUSH down.
ENGAGING THE DRIVE UNIT
NOTICE
DO NOT engage the unit unless directional FNR Handle (Figure 14) is on NEUTRAL.