Owner’s Manual & Safety Instructions Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference. WARNING! Using an engine indoors CAN KILL YOU IN MINUTES.
Table of Contents Safety Specifications.............................................. 2 Safety ��������������������������������������������������������� 3 Setup........................................................... 6 Operationr��������������������������������������������������� 10 Maintenances���������������������������������������������� 17 Troubleshooting.......................................... 22 Warranties.................................................. 24 Parts Lists and Diagrams...........
WARNING SYMBOLS AND DEFINITIONS This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. Safety Indicates a hazardous situation which, if not avoided, will result in death or serious injury. Indicates a hazardous situation which, if not avoided, could result in death or serious injury. Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Operating Precautions CARBON MONOXIDE HAZARD Using an engine indoors CAN KILL YOU IN MINUTES. Engine exhaust contains carbon monoxide. This is a poison you cannot see or smell. 1. Safety NEVER use inside a home or garage, EVEN IF doors and windows are open. Setup Operation Maintenance Only use OUTSIDE and far away from windows, doors, and vents. 2. Contact local utility companies before beginning any project.
25. WARNING: This product contains or, when used, produces a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. (California Health & Safety Code § 25249.5, et seq.) 26. WARNING: This product contains di (2-ethylhexyl) phthalate (DEHP), a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. (California Health & Safety Code § 25249.5, et seq.) 27.
Set Up Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Safety RISK OF ACCIDENTAL STARTING RESULTING IN SERIOUS PERSONAL INJURY. Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and unplug the spark plug wire(s) before assembling or making any adjustments to the equipment.
1. To use the Trencher, the Leg Assemblies must be installed next to the Boom (36), and the Wheels and Axles (50) moved to the rear. 2. Move the Trencher to the work area (See Starting the Engine on page 10). 3. Start the engine and use the Boom Controls to curl the Bucket toward the Boom without touching the ground. Moving the Bucket Assembly (32) down to the ground will raise the Frame Assembly (90). Lift the Tires just off the ground and stop. 4.
Components and Controls Clevis Pin No. 1 (29) Safety Pin (42) Hydraulic Fluid Fill Plug (11) Seat (73) Control Panel (9) Engine (74) Setup Boom Extension (34) Frame Assy.
Components and Controls (cont’d) Bucket Assembly Safety Main Boom Setup Frame Assembly/ Engine/Pump Tires Operation Bucket Seat Axle & Hub Leg Extension Maintenance Control Panel Leg Assembly Figure D Item 62365 For technical questions, please call 1-888-866-5797.
Operation Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Safety Pre-Start Checks Inspect engine and equipment looking for damaged, loose, and missing parts before set up and starting. If any problems are found, do not use equipment until fixed properly.
Engine Diagrams Throttle Lever Safety Ignition Switch Muffler Starter Grip Setup Spark Plug Recoil Starter Air Cleaner Choke Lever Fuel Valve Lever Fuel Filler Cap Maintenance Operation Fuel Tank Oil Drain Plug Oil Filler Cap Item 62365 For technical questions, please call 1-888-866-5797.
Manual Start 1. Turn the Fuel Valve Lever to its “OPEN” position. Safety 1 ON 2. Turn the Ignition Switch to its ON or RUN position. O OFF ON I 2 Setup 3. Then, turn the engine Choke Lever to its “START” position. Set the Choke Lever in the “RUN” position when starting a warm engine. 3 Operation 4. Grip the Starter Handle of the Engine loosely and pull it slowly several times to allow the gasoline to flow into the Engine’s carburetor.
6. Slide the Throttle or Speed Control Lever to 1/3 away from the SLOW position (the “turtle”). Adjust as needed. 6 Safety Note: Some tools have a Speed Control Lever located elsewhere on the tool which functions the same as the Throttle. Use the Speed Control Lever in place of the Throttle when the tool is so equipped. IMPORTANT: Allow the engine to run at no load for five minutes after each start‑up so that the engine can stabilize. Break-in Period: a.
Changing Trencher Arm Positions This Trencher can be used with two arm positions. See Figure E and Figure F. Cylinder (26) Safety Main Boom (36) Pin (29) Main Boom (36) upper hole Pin (29) Cylinder (26) lower hole Boom Pivot (38) Boom Pivot (38) Setup Figure E: Shallow Position (5 1/2’ downward reach) 1. To use the Shallow Position, with a 5 1/2’ downward reach, do as follows: Figure F: Deep Position (7’ downward reach) 2.
General Operating Instructions 3. Push forward on the Bucket Handle Control to open the Bucket Assembly (32). 4. Push forward on the Boom Handle to lower the Boom until the Bucket reaches the ground. Bucket: IN - OUT Boom Extension: IN - OUT Boom: IN - OUT Boom Swing: LEFT - RIGHT 5. Pull back on the Bucket Lever control until the Bucket scoops up the dirt. 6. Pull back on both the Boom and Boom Extension Control Levers to raise the load. 7.
Transporting the Trencher 1. Lock the Boom in Place. Use the Bucket Lever to line the hole on the Bucket (32) up with the hole on the Boom Extension (34). Insert a Safety Locking Pin (15) and secure with a Ball Pin. Safety 2. Use the Boom Swing Lever to line up the hole in the Boom Pivot (38) with the Hole in the Frame (90). Insert a Safety Locking Pin (15) and secure with a Ball Pin. See Figure H. 7.
Maintenance TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING: Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect the spark plug cap before performing any inspection, maintenance, or cleaning procedures. TO PREVENT SERIOUS INJURY FROM EQUIPMENT FAILURE: Do not use damaged equipment. If abnormal noise, vibration, or excess smoking occurs, have the problem corrected before further use. Safety WARNING Follow all service instructions in this manual.
Safety Operation Figure K: Lubrication Points Setup Maintenance Page 18 For technical questions, please call 1-888-866-5797.
Fuel Filter Replacement (if equipped) Engine Oil Change WARNING! TO PREVENT SERIOUS INJURY FROM FIRE OR EXPLOSION: Fill the fuel tank in a well-ventilated area away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool. Do not smoke. 1. Wear protective gear including, ANSIapproved safety goggles, NIOSH-approved dust mask/respirator, and nitrile gloves. 2. Clean the Fuel Cap and the area around it. 3. Remove Fuel Filter (6R).
Air Filter Element Maintenance 1. Remove the air filter cover and the air filter elements and check for dirt. Clean as described below. 2. Cleaning: Safety • For “paper” filter elements: To prevent injury from dust and debris, wear ANSI-approved safety goggles, NIOSH‑approved dust mask/respirator, and heavy-duty work gloves. In a well‑ventilated area away from bystanders, use pressurized air to blow dust out of the air filter. If this does not get the filter clean, replace it.
1. CLEANING: Wait for engine to cool, then clean engine with dry cloth. NOTICE: Do not clean using water. The water will gradually enter the engine and cause rust damage. Apply a thin coat of rust preventive oil to all metal parts. 2. FUEL: WARNING! TO PREVENT SERIOUS INJURY FROM FIRE: To protect the fuel tank during storage, fill the tank with gasoline treated with fuel stabilizer in a well-ventilated area away from ignition sources.
Troubleshooting Problem Possible Causes Engine will not start FUEL RELATED: Safety Setup Operation Trencher loses performance Probable Solutions FUEL RELATED: 1. No fuel in tank or fuel valve closed. 1. Fill fuel tank and open fuel valve. 2. Choke not in start position, especially with cold engine. 2. Move choke to start position if engine is cold. 3. Low quality or deteriorated old gasoline. 3. Use only fresh 87+ octane unleaded gasoline. 4. Carburetor not primed. 4.
1. Spark Plug Cap loose. 1. Check wire connections. 2. Incorrect Spark Plug Gap or damaged Spark Plug. 2. Re-gap or replace Spark Plug. 3. Defective Spark Plug Cap. 3. Replace Spark Plug Cap. 4. Old or low quality gasoline. 4. Use only fresh 87+ octane unleaded gasoline. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 5. Incorrect compression. 5. Diagnose and repair compression. (Use Engine will not start: COMPRESSION RELATED section.) 1.
Warranties Safety Limited 90 Day Warranty Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase.
Repair or replacement of any warranted part will be performed at no charge to the owner if the work is performed through a warranty station authorized by HFT. For emissions warranty service, contact the HFT Customer Service Department at 1-888-866-5797. 6. Warranted Parts 1) 3. Consequential Damages Coverage Coverage under this warranty shall also extend to the failure of any engine components caused by the failure of any warranted part while it is still covered under this warranty. 2) 4.
Parts Lists and Diagrams Main Parts List Safety Part Setup Operation Maintenance 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46A 47 48 49 50 Description Nut 3/8" Spring Washer 3/8" Control Support Washer 3/8" Hex Hd. Bolt 3/8"*1-1/8" Scutcheon Hose Assembly No.6 Hex Connector Control Valve Seat Bottom Fill Plug/Dipstick Spring Washer 5/16" Enter Hose Assembly No.
Maintenance Operation Setup Safety Main Assembly Diagram Item 62365 For technical questions, please call 1-888-866-5797.
Parts List B - Cylinder Head Part Safety 1B 2B 3B 4B 5B 6B 7B 8B 9B Description Cylinder Head Assembly Intake Valve Guide Exhaust Valve Guide Valve Guide Clip Cover Packing Breathing Tube Spark Plug Cylinder Gasket Qty. 1 1 1 1 1 1 1 1 1 Part 10B 11B 12B 13B 14B 15B 16B 17B 18B Description Muffler Gasket Pin Bolt 6x14 Bolt 8x55 Intake Bolt Exhaust Bolt Intake Valve Seat Exhaust Valve Seat Cylinder Head Qty.
Parts List C - Crank Case 1C 2C 3C 4C 5C 6C 7C 8C 9C 10C 11C 12C Description Crank Case Assembly Oil Level Switch Governor Gear Assembly Weight Governor Gear Weight Pin Slider Shaft Arm Drain Plug Washer Washer Clip Qty. 1 1 1 2 1 2 1 1 2 2 2 1 Part 13C 14C 15C 16C 17C 18C 19C 20C 21C 22C 23C Description Ball Bearing Oil Seal O-Ring Nut Washer R-Pin Bolt 6x12 Shaft Governor Assembly Oil Alarm Bolt Qty.
Parts List D - Crank Case Cover Part Safety 1D 2D 3D 4D 5D 6D Bolt Oil Stick Gasket Cover Oil Seal Bearing Description Qty. 6 1 2 1 1 1 Part 7D 8D 9D 10D 11D Description Pin Oil Filler Cap Gasket Case Cover Oil Fill Assembly Cap Assembly Qty. 2 1 1 1 1 Diagram D - Crank Case Cover Setup Operation Maintenance Note: When ordering replacement parts from this diagram, use the suffix “D”. Page 30 For technical questions, please call 1-888-866-5797.
Parts List E - Crankshaft/Piston Description Ring Set Piston Pin Rod Assembly Crankshaft Assembly Bolt Clip Timing Gear Gear Qty. 1 1 1 1 1 2 2 1 1 Part 10E 11E 12E 13E 14E 15E 16E 17E Description Crankshaft First Ring Second Ring Oil Ring Bushing Ring Connecting Rod Connecting Rod Bearing Cap Key Qty. 1 1 1 2 1 1 1 1 Safety Part 1E 2E 3E 4E 5E 6E 7E 8E 9E Maintenance Operation Setup Diagram E - Crankshaft/Piston Note: When ordering replacement parts from this diagram, use the suffix “E”.
Parts List F - Gas Distribution Adjustment System Part Safety 1F 2F 3F 4F 5F 6F 7F 8F 9F 10F 11F 12F 13F Description Nut Rocker Arm Valve Rocker Pivot Bolt Plate Assembly Block Guide Push Rod Guide Push Rod Valve Lifter Valve Cap Valve Spring Retainer Valve Spring Guide Seal Qty.
Parts List G - Starter Subassembly 1G 2G 3G 4G 5G 6G 7G 8G 9G Description Starter Assembly Set Screw Ratchet Guide Friction Spring Starter Ratchet Return Spring Recoil Starter Reel Recoil Starter Spring Recoil Starter Knob Qty. 1 1 1 1 2 2 1 1 1 Part 10G 11G 12G 13G 14G 15G 16G 17G 18G Description Fan Cover Rope Bolt 6x8 Bolt 6x10 Fan Cover Switch Assembly Recoil Starter Fan Cover Stop Switch Assembly Qty.
Parts List H - Diversion Assembly Part Safety 1H 2H 3H Bolt 6x20 Side Plate Bolt 6x8 Description Qty. 1 1 2 Part 4H 5H 6H Shroud Side Plate Grommet Description Qty. 1 1 1 Diagram H - Diversion Assembly Setup Operation Maintenance Note: When ordering replacement parts from this diagram, use the suffix “H”. Page 34 For technical questions, please call 1-888-866-5797.
Parts List J - Carburetor 1J 2J 3J 4J 5J 6J 7J 8J 9J 10J 11J 12J 13J 14J 15J 16J 17J 18J Description Carburetor Assembly Carburetor Main Nozzle Main Jet Float Valve Valve Set Spring Float Float Pin Oil Cup Gasket Oil Cup Gasket Bolt Bolt Drain Bolt Drain Bolt Gasket Fuel Strainer Cup Fuel Strainer Cup Packing Fuel Packing Lever Qty.
Parts List K - Flywheel/Coil Assembly Part Safety 1K 2K 3K 4K 5K 6K 7K 8K Description Ignition Assembly Ignition Coil Noise Suppression Cap Assembly Stop Switch Cord Bolt 6x30 Flywheel Cover Charge Coil Assembly Cooling Fan Qty. 1 2 1 1 2 1 1 1 Part 9K 10K 11K 12K 13K 14K 15K Description Starter Pulley Nut Flywheel Charge Coil Bolt 6x35 Cord Clamp Bolt 6x8 Qty.
Parts List M - Control System 1M 2M 3M 4M 5M 6M 7M 8M 9M 10M 11M Description Bolt Governor Spring Bolt Governor Arm Nut Throttle Return Spring Linkage Control Assembly Nut Fixing Plate Washer Qty. 2 1 1 1 1 1 1 1 1 1 1 Part 12M 13M 14M 15M 16M 17M 18M 19M 20M 21M 22M Description Washer Retainer Assembly Spring Screw 5x35 Cable Return Spring Control Handle Screw 5x25 Back Plate Screw 4x6 Locking Ring Clip Qty.
Parts List N - Air Cleaner Part Safety 1N 2N 3N 4N 5N 6N 7N 8N 9N Description Air Cleaner Assembly Elbow Short Collar Long Collar Elbow Packing Bolt 6x20 Nut 6mm Nut Air Cleaner Cover Qty. 1 1 2 2 1 1 2 2 1 Part 10N 11N 12N 13N 14N 15N 16N 17N Description Air Cleaner Element Assembly Grommet Outer Filter Element Base Air Cleaner Assembly Cover Screw Qty. 1 1 1 1 1 1 1 2 Diagram N - Air Cleaner Setup Operation Maintenance Note: When ordering replacement parts from this diagram, use the suffix “N”.
Part 1P 2P 3P Description Muffler Nut 8mm Muffler Cover Qty. 1 1 1 Part 4P 5P 6P Description Qty. Description Qty. Screw 5x8 Muffler Assembly Muffler Case 4 1 1 Setup Diagram P - Muffler Safety Parts List P - Muffler Note: When ordering replacement parts from this diagram, use the suffix “P”. Part 1R 2R 3R 4R 5R 6R 7R Description Clip Tube Joint Assembly Fuel Tank Fuel Filler Assembly Fuel Cap Gasket Fuel Strainer Bolt 6x25 Qty.
3491 Mission Oaks Blvd.
