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712MT OPERATOR’S MANUAL 9/18/20 Page 2 of 16

LUBRICATION REQUIREMENTS

Grease at the intervals indicated per the illustration of grease lubrication points. There is also a grease diagram decal on
the machine.

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Summary of Contents for HT712

Page 1: ...mal trenching Consider using a backhoe or other heavier equipment for such conditions TABLE OF CONTENTS LUBRICATION REQUIREMENTS 2 SAFETY MESSAGES 3 SAFETY INSTRUCTIONS OVERVIEW 3 TRENCHER OPERATING I...

Page 2: ...MT OPERATOR S MANUAL 9 18 20 Page 2 of 16 LUBRICATION REQUIREMENTS Grease at the intervals indicated per the illustration of grease lubrication points There is also a grease diagram decal on the machi...

Page 3: ...are affixed to the trencher near specific hazards Read this manual and study ALL decals on the trencher before operating the trencher SAFETY INSTRUCTIONS OVERVIEW READ SAFETY AND OPERATING INSTRUCTIO...

Page 4: ...can suddenly drag the machine forward if the trencher is forced too quickly into the ground or catches on a buried object WARNING Contact with the dig chain or auger while in operation will cause seri...

Page 5: ...re performing any cleaning or maintenance Avoid contact with hydraulic fluid WARNING When machine is operating hydraulic fluid is under extreme pressure and can get under skin and burn or poison Keep...

Page 6: ...cher 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 T...

Page 7: ...H There are two ignition switches One switch is located on the control panel with the other trencher controls for your convenience The other is located on the engine Use these to start and stop the en...

Page 8: ...5 Move the THROTTLE to about 1 3 of the way back This increases throttle It is located above choke 6 Pull start cord located on engine recoil When the engine starts open the CHOKE turn choke off after...

Page 9: ...r the digging chain slows down release the WHEEL DRIVE CONTROL until the engine recovers to operating speed then reactivate the WHEEL DRIVE CONTROL If traction is limited the trencher may be tilted ba...

Page 10: ...your safety Use half throttle for slower transport speed Keep away from tires to avoid getting crushed WARNING Getting run over by the trencher will cause injury Never allow anybody to ride on the tre...

Page 11: ...atch the ramps and lower to the ground 3 Line up the trencher with the rear of the trailer The dig chain should be toward the trailer 4 Throttle engine down and move control speed lever halfway betwee...

Page 12: ...ty in the measurement given a 95 confidence interval is 1 1 m s2 Safety gloves help to isolate the hands from the vibration keep them warm and dry maintain blood circulation and make operators less su...

Page 13: ...ermine location of utilities before trenching WARNING Fiber optic cables convey laser light that can injure your eyesight CALL 811 or 1 888 258 0808 TO LOCATE UTILITIES BEFORE TRENCHING US OR CANADA T...

Page 14: ...e gas oil petroleum water or sewer In any case stop digging shut off the engine and evacuate the area immediately Call 911 for help Electrical wires or cables If you think that you may have severed el...

Page 15: ...low adequate side and overhead clearances between trencher and any objects such as buildings fences and trees WARNING If the digging chain contacts an object the digging chain can climb upward quickly...

Page 16: ...6 9 10 IGNITION 7 8 IGNITION SWITCH 6 7 8 10 LOADING 11 LUBRICATION 2 NAVIGATING 4 10 11 OPERATING INSTRUCTIONS 3 6 11 OPERATOR PREPARATION 12 PERSONAL PROTECTION 4 11 12 PLUNGE CUT 9 PROTECTION 4 11...

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