Operation
3A7398A
13
Set Cutter Speed
1. Set the skid steer parking brake.
2. Raise the GrindLazer off of the work surface slightly
(~0.5 inch, 1.3 cm) to ensure the cutters do not put
grooves in the work surface when starting the
engine. See
Step 1
page 12, for more details.
3. Allow the hydraulic motor/gas engine to warm up for
a minute or two and then set the correct RPM for the
cutters you have installed. Refer to
, page 13, and
4.
Hydraulic Models (25P471 & 25P472)
: Observe
the tachometer to ensure speed of the cutters
matches the
for best cutter
life. Adjust as required using the Speed Control
Knob.
Gas Model (25P473):
After engine warms up, adjust
Throttle Control lever and observe tachometer to
ensure engine speed of the cutters matches the
for best cutter life.
Recommended Speeds
For best performance and cutter life, try to maintain the
following speeds read at the Tachometer:
Set Cut Depth
Set cutter depth just deep enough to do the job. Too
much pressure will wear the cutters out faster and leave
a much more severe cut on the surface.
25P471:
Cutters should be parallel to the work surface
when engaged. The cutting circle left by the GrindLazer
should be an even circle.
25P472 & 25P473:
Add slightly more pressure to the
rear cutters than the front cutters by turning the rear
Cutter Height Control Knobs clockwise two turns. This
will allow the front cutters to remove the material and the
rear to finish the job.
NOTE:
Excess down pressure creates excess wear on
all moving parts. The GrindLazer’s weight should be
sufficient enough to hold the cutter heads against the
work surface. Should the desired results not meet your
expectations, consider resetting the GrindLazer (RPM’s)
to the correct speed or reducing forward motion speed.
1.
Hydraulic Models (25P471 & 25P472)
:
Turn off
auxiliary circuit and wait until the GrindLazer cools
off if it has been running.
Gas Model (25P473)
: Turn off engine and wait until
the GrindLazer cools off if it has been running.
2. Loosen the jam nuts using a 1-5/8” wrench on the
Cutter Height Control Knobs located on both ends of
the GrindLazer.
Rotating cutters can severely injure feet. Keep feet
clear of cutters.
NOTICE
Incorrect setting of RPM will damage cutters or the
drive belt.
Tachometer Speed
Cutter Type
Model
Carbide Cutters
Wire Brush
25P471
2000-2200
800-1000
25P472
2000-2400
1400-1600
25P473
3200-3400
1400-1600
Rotating cutters can severely injure feet. Keep feet
clear of cutters.
