Page 17
SKU 93167
For technical questions, please call 1-800-444-3353
MAINTENANCE
WARNING! Before performing any inspection, maintenance, or cleaning procedures,
disconnect the wire to the Spark Plug of the Engine, and release any remaining pressure
in hydraulic lines by operating the Boom Controls until there is no movement.
1. Before each use, inspect the general condition of the Trencher. Check for loose screws,
misalignment or binding of moving parts, cracked or broken parts, damaged hydraulic
hoses, and any other condition that may affect its safe operation. If abnormal noise or
vibration occurs, have the problem corrected before further use. Do not use damaged
equipment.
2. Check Engine oil level before each use.
3. With engine off, periodically check hydraulic oil level. Fill when necessary.
4. For Engine maintenance and troubleshooting, refer to the Robin Subaru
®
Engine Oper-
ator’s Manual.
5. After the Engine has cooled down, remove the remaining gasoline into a gasoline con-
tainer before storing the unit.
6. After the first five hours of use, drain and replace the Engine oil. After that, replace the
oil after every 25 hours of use.
7. Yearly, or more often if used on a regular basis, change the Hydraulic Fluid. To do so:
a. Locate the Trencher on a level piece of ground to allow the Fluid to drain properly. Allow
the trencher to cool off.
b. Place an appropriate container underneath (that can hold at least 4 gallons) and remove
the Oil Plug (89). Allow the fluid to drain.
c. Replace and tighten the Oil Plug. Refill the Fluid to near the top line on the Dipstick (11),
about 3.5 gallons.
d. Purge air from the hydraulics: Follow steps 11 through 19, under Purging Air From the
Trencher, on page 9.
8. This item includes 4 seal kits for the Cylinders (26).
These seal kits are intended for installation only by a qualified technician.
Inexperienced replacement may result in damage to the seals and/or hydraulics, creating
the possibility of a hazardous hydraulic failure.
9. Periodically, apply grease to all boom axis-movement points using a grease gun with a
pin-type tip and zerk-type fitting.
REV 05j; 07f
