Section 3: Operating
3/17/20
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General Operating Instructions
By now you should have familiarized yourself with the
Operator’s Manual for your model GR1525 Stump
Grinder. If you have not done so, please do so now.
We cannot over-stress the importance of reading and
following the safety information and operating
procedures that are spelled out in this Manual.
Proceed by getting onto the seat of your tractor and
fastening your seat belt before starting your tractor. It
won’t take you long to learn how to use your new Land
Pride Stump Grinder. It is also important to practice
moving the cutting wheel up and down, and swinging the
cutting wheel left and right until you have gained the
confidence and skill needed to have a good feel in what
you are doing.
It is now time for you to make a running operational
check. Make certain that the tractor’s transmission is in
park or in neutral and the park brake set and the power
take-off is disengaged. You should now start the engine
and lower the 3-point until the Stump Grinder mainframe
is fully seated on the ground. Next, lift the cutting wheel
off the ground, back off the engine to approximately one-
quarter throttle speed, and then engage power take-off.
Never engage PTO at full engine rpm. Damage to the
Stump Grinder can occur. Next you should extend and
retract the swing cylinder to move the cutting wheel left to
right and right to left. Also extend and retract the lift
cylinder to raise and lower the cutting wheel.
It is now time to start removing those unwanted stumps.
If you have not already done so, have the site marked
with flags to indicate where underground utilities run.
Before approaching the stump, fully retract the lift
cylinder and move the cutting wheel fully to the left. With
tractor engine at an idle, continue to back-up to the
stump. Stop moving back once the cutting wheel is
positioned on the left and near side of the stump. Once
stopped, set park brake. Lower 3-point hitch down until
Stump Grinder mainframe is firmly planted on the
ground; and then extend the lift cylinder until the cutting
wheel is just above the stump. It is time to raise the
engine to full operating speed. Extend the swing cylinder
to move the cutting wheel to the right. Extend the lift
cylinder until the cutting teeth are below the top of the
stump. Approximately 1" below if the stump is hard, and
up to 4" if the wood is very soft or rotten.
You are now ready to begin chipping away at the stump.
Slowly extend the swing cylinder to move the cutting
wheel to the right as it removes pieces of wood from the
top of the stump. Adjust corresponding needle valve so
that with full hydraulic control lever engagement, the
cutting wheel makes a smooth steady pass across the
stump while grinding. Once the cutting wheel has passed
across the top of the stump, lower the cutting wheel again
and begin moving the cutting wheel back across the
stump. Again, adjust the needle valve, so that the cutting
wheel makes a smooth steady pass. At the end of each
pass across the stump, lower the cutting wheel. Make
another pass back across the stump until a layer of
approximately 10" deep has been removed and/or you
are ready to back-up to a new cutting position over the
stump.
Before moving back, you should fully retract lift cylinder.
Move cutting wheel fully to the left. Raise 3-point arms up
several inches. Lower engine speed to an idle. Release
park brake. Then back the Stump Grinder to a new
location over the stump. After you have stopped moving,
you should lower the 3-point lift arms until the mainframe
is firmly planted on the ground. Reset the park brake.
With park brake set, raise engine speed to full operating
speed and begin chipping away at the stump as before
until approximately 10" have been removed across the
stump. You should repeat this process of cutting down
the stump until the stump has been completely removed
below the ground, up to a maximum depth of 10" below
the ground.
With a little practice, you will find that you will quickly
become very adept, handy, and skillful at using your
Land Pride GR1525 Stump Grinder.
See
on page 35 and
“Features & Benefits”
on page 36 of your Operator’s
Manual for additional information.
