USING THE GEORIPPER® MINITRENCHER
WARNING!
DO NOT ALLOW DIGGING CHAIN TO JAM OR SLOW TO A STOP WHILE HOLDING THE
THROTTLE ON. TURN OFF ENGINE, DISCONTINUE OPERATION AND INVESTIGATE. RUNNING
ENGINE AT MORE THAN IDLE WITH CHAIN JAMMED WILL CAUSE SEVERE CLUTCH AND/OR
BELT DAMAGE.
If GeoRipper® minitrencher has an adjustment screw for the belt tension, the tension must be
readjusted after the first hour of operation to prolong belt life. See Powerhead Operator’s
Manual for further instruction.
1.
Start the powerhead per the manufacturer’s Operator’s manual. Start trenching with the
GeoRipper® minitrencher on the ground and tip the blade into the ground. Once the
digging bar and chain are in the ground, the operator can choose to stand and cut through
the ground backwards along their desired line or continue to “drag back and tip in.” Keep
the angle of the digging bar at 25-30-degree angle from vertical for comfortable operation.
In lighter soils, it may be necessary to make second pass through the trench to clear out
any spoils that fell back in.
2.
Most powerheads are designed to operate best and develop maximum power near 3/4
throttle. Depending on soil type, best operating speeds will be from 3/4 to full throttle. For
greater control at shallow depths [8 inches (200 mm) or less] a 1/2 to 3/4 throttle will
improve trenching safety.
3.
When trenching without a MiniTrencher EZ Kart in difficult soils, the “drag back and tip in”
method is recommended.
4.
If you strike solid obstacles (large rocks, concrete, or large roots or buried timber) remove
the obstacle before continuing. The GeoRipper® minitrencher is designed to dig earth, not
large stones or tree roots over 3 inches (80mm) in diameter.
5.
For wider trenches [2-3 inches (50 – 80mm)], rotate blade along the long axis of the blade
while trenching. For anything over 3 inches (80mm), make a second trenching cut at the
outside of the desired width and remove the soil between the two trenches.
6.
Regular checking/adjustment of digging chains will extend chain life.
7.
At the end of the job, and periodically during the project, brush the loose dirt off the
digging chain and around the digging sprocket. Inspect the digging teeth for any damage.
8.
To trench down an incline, always stand downhill of the trencher.
9.
To trench laterally across an incline, always direct the discharge chute downhill. This will
keep the spoils from falling downhill back into the trench.
10.
In very rocky soils, the option rock shield can be used with the MiniTrencher EZ Kart™.
11.
Cut grass before trenching to help recover spoils.
6
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