GENERAL OPERATION
Operation - 16
Operating Procedure
WARNING
During the grinding process, objects can be
propelled from the stump grinder causing injury or
damage to people, animals, buildings, vehicles,
or other objects of value. Block access to the
area prior to grinding stumps. Use plywood or
equivalent shielding to protect nearby building
or objects. If access to the area cannot be
prevented, use plywood or equivalent shielding to
protect pedestrian areas.
Before grinding, cut the stump as low to the ground
as possible with a chain saw.
Set the power unit’s transaxles to low range.
Move the stump grinder into position above the clos-
est edge of the stump.
With the power unit engine running between 2,000
and 2,500 RPM, engage the PTO switch. Adjust the
throttle to the desired engine RPM.
Slowly lower the stump grinder until it begins to cut.
Turn the power unit’s steering wheel left and right to
sweep the cutter head across the stump. After each
pass, lower the grinder a little more and repeat the
process. If the grinder is lowered to much at one
time, it will not allow the power unit to be steered. Lift
the grinder slightly to continue side-to-side grinding.
After removing several inches on larger stumps, it is
necessary to drive forward and repeat the process.
Also on larger stumps, it is advisable to approach
from several different angles, if possible.
Follow this procedure until the stump is cut to the
desired depth below the ground surface.
There are variables in stumps. Hardwoods cut much
slower than softwoods. Partially decayed stumps
may cut easy in some spots, but still have some
hard spots or tough roots.
Do not grind in a position that allows the teeth to be
in continuous contact with a rock.
