Carlton SP4012 - MACHINE OPERATION

SP4012 MACHINE OPERATION
24
• Reduce engine RPM to idle.
• Raise cutter head clear of stump.
• Engage cutter head drive belts by slowly
rotating engagement lever.
• Increase engine RPM to full.
• Test controls for proper operation,
speed, and unobstructed movement.
• Cutter head swing speed should be
adjusted to a rate that will allow cutter
wheel to pass through stump smoothly.
If jerking, bouncing or significant drops
in engine speed occur, swing rate is too
rapid and must be decreased.
• Swing speed should be determined and
adjusted with the controls in the full
open position.
• A counter-rotating valve is located
within the hydraulic system to adjust this
speed. Turning the handle counter-
clockwise will open the bypass and slow
swing action. Turning it clockwise will
increase swing rate.
• Lower spinning cutter wheel to stump
and make a few light passes at stump to
get a feel for the cutting action.
• Gradually increase cutting action and
work away at stump by swinging cutter
wheel left- to right-to-left through stump
in a sideways motion. Smooth,
effortless cutting lengthens machine life,
minimizes downtime and is more
profitable in the long run.
• Continue cutting stump by adjusting
cutting wheel progressively lower until
stump is cut well below ground level.
SWING SPEED ADJUSTMENT