712MT OPERATOR’S MANUAL 9/18/20 Page 6 of 16
TRENCHER OPERATING INSTRUCTIONS
READ SAFETY INSTRUCTIONS BEFORE OPERATING! Both the SAFETY INSTRUCTIONS and OPERATING
INSTRUCTIONS are in this manual.
Be sure that the engine oil and fuel and the machine hydraulic fluid are all at proper levels before starting the engine.
STUDY AND UNDERSTAND CONTROLS BEFORE BEGINNING OPERATION.
CONTROLS
1. FREEWHEELING HUBS: To unlock, line up the roll pin and locking pin to the slot in the locking plate. To help
line up the roll pin under the lock plate with the slot, the finger pull ring and the roll pin are aligned with each other on
the lock pin. Pull out on spring loaded lock pin until the roll pin clears the slot, and then turn 90 degrees. To engage
either hub, turn the lock pin handle in to allow the spring-loaded pin to engage. Repeat for the other wheel. Push the
trencher a bit if necessary until each pin finds a hole to drop into. The hubs are now locked. Disengaging one hub
makes it much easier to turn the trencher when transporting under power.
2. IGNITION SWITCH: There are two switches. One is the switch that comes on the engine. The other is located on
the control panel. Either switch will stop the engine. BOTH must be in the ON position to start. Refer to the ENGINE
START UP PROCEDURE.
3. WHEEL DRIVE CONTROL: The Wheel drive lever must be in ON position when engaging the control lever.
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Pushing Direction control lever to the forward position will cause machine to move forward.
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Pulling Direction control lever back will cause machine to move backward.
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Very slow speed is required for trenching in most conditions.
NOTE: Be sure operator understands that the machine moves BACK when trenching, not forward.
4. TRENCH CHAIN CONTROL: To trench, hold lever in TRENCH position. To remove debris from chain push lever
down to reverse chain.
5. DIGGING BOOM CONTROL: Pull back to raise the digging boom and push forward to lower the boom.
