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. REV 15a 173cc Vertical Engine Using an engine indoors CAN KILL YOU IN MINUTES.
Table of Contents Specifications.............................................. 2 Maintenance............................................... 12 Safety.......................................................... 3 Warranties.................................................. 17 Set Up......................................................... 7 Parts Lists and Diagrams........................... 18 Operation.....................................................
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. 12. Wear ANSI-approved safety glasses, hearing protection, and NIOSH-approved dust mask/ respirator under a full face shield along with steel-toed work boots during use. 13. People with pacemakers should consult their physician(s) before use.
26. When spills of fuel or oil occur, they must be cleaned up immediately. Dispose of fluids and cleaning materials as per any local, state, or federal codes and regulations. Store oil rags in a bottom-ventilated, covered, metal container. 27. Keep hands and feet away from moving parts. Do not reach over or across equipment while operating. 28. Before use, check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the equipment’s operation.
Engine Components Fuel Cap Safety Priming Bulb Setup Starter Handle Dipstick Muffler Operation Air Filter Brake Arm Throttle Maintenance XXXXXXXXXX Serial Number Location (Write on front cover of manual.) Page 6 For technical questions, please call 1-888-866-5797.
Set Up Safety 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. TO PREVENT SERIOUS INJURY: Operate only with proper spark arrestor installed. Operation of this equipment may create sparks that can start fires around dry vegetation. A spark arrestor may be required. The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements.
Installation 1. IMPORTANT: If you have any doubts about your ability to perform the following procedures, have a qualified service technician perform the installation. Safety 2. Install this engine on a lawn mower only. Do not use to power a vehicle. 3. Mounting hole locations: a 6. Insert the mower’s brake cable sheath through the hole in the Brake bracket. Secure the mower brake cable to the brake arm.
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.
Starting the Engine Before Starting the Engine: Safety a. Follow the Set Up Instructions in the equipment manual to prepare the equipment. b. Inspect the equipment and engine. c. Fill the engine with the proper amount and type of both fuel and oil. d. Read the Equipment Operation section in the equipment manual. e. Move the mower to a location that is flat, level, and free from loose objects (such as rocks or sticks). The mower may be difficult to start on grass. Setup 1.
Note: Do not let the Starter Handle snap back against the engine. Hold it as it recoils so it doesn't hit the engine. 5. Allow the Engine to run for several seconds. Then, the Mower’s Throttle control can be adjusted as desired for operation. Safety 4. Grip the Starter Handle of the Engine loosely and pull it gently until resistance is felt. Allow Cable to retract fully and then pull it quickly. Repeat until the engine starts.
Maintenance WARNING Safety TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING: Release the brake handle, 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. Follow all service instructions in this manual.
Checking and Filling Fuel Safety WARNING! TO PREVENT SERIOUS INJURY FROM FIRE: 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 before adding fuel. Do not smoke. 1. Clean the Fuel Cap and the area around it. Full level Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol. Note: Do not use gasoline that has been stored in a metal fuel container or a dirty fuel container.
3. Inspect the spark plug: If the electrode is oily, clean it using a clean, dry rag. If the electrode has deposits on it, polish it using emery paper. If the white insulator is cracked or chipped, the spark plug needs to be replaced. Safety Recommended Spark Plugs Brand NGK® NHSP® / TORCH® DENSO® CHAMPION® Plug BP-6ES/BPR6ES F7TC/F7RTC W16EPR-U/W16EP-U RN9YC4 NOTICE: Using an incorrect spark plug may damage the engine. 4.
Troubleshooting Engine misfires MOWER ENGINE SPECIFIC: 1. Brake Handle not held or brake cable not connected properly. 1. Make sure brake handle is held down and brake cable is properly adjusted. 2. Mower on top of grass. 2. Start mower atop clear area free of loose objects and grass. FUEL RELATED: FUEL RELATED: 1. No fuel in tank. 1. Fill fuel tank with fresh 87+ octane stabilizer treated unleaded gasoline and open fuel valve.
Problem Engine stops suddenly Possible Causes Probable Solutions 1. Fill engine oil to proper level. Check engine oil before EVERY use. 2. Fuel tank empty or full of impure or low quality gasoline. 2. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 3. Defective fuel tank cap creating vacuum, preventing proper fuel flow. 3. Test/replace fuel tank cap. 4. Faulty magneto. 4.
Emission Control System Warranty Where a warrantable condition exists, HFT will repair your engine at no cost to you including diagnosis, parts and labor. Manufacturer’s Warranty Coverage The 2014-2015 engines are warranted for two (2) years. If any emission-related part on your engine is defective, the part will be repaired or replaced by HFT.
Parts Lists and Diagrams PLEASE READ THE FOLLOWING CAREFULLY Safety THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT.
Assembly Diagram 67 67 Safety 67 65 66 68 68 93 99 69 64 94 98 97 20 20 21 19 15 16 15 13 92 22 23 24 25 17 91 18 45 28 29 30 32 31 12 44 43 47 53 10 6 1 7 5 7 53 10 3 2 52 54 70 71 51 72 55 52 61 63 60 61 41 60 33 34 54 76 35 37 38 34 78 80 36 81 82 77 42 75 39 40 40 Item 69731 107 103 57 73 74 72 106 102 56 57 59 51 7 55 105 108 49 46 58 9 11 50 62 Operation 48 11 4 40 40 For technical questions, please call 1-888-866-5797.
Mounting Hole Diagram Note: Not to scale. A Ø8 in. / 203mm 6*Ø0.35 in. / 9mm Ø0.24 in. / 6mm 3.27 in. / 83mm A Ø0.34 in. / 8.7mm A-A 2:1 Ø1 in. / 25.4mm Ø0.24 in. / 6mm 0.98 in. / 25mm Ø0.34 in. / 8.7mm 3.94 in. / 100mm 3.85 in. / 97.7mm 3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797 www.harborfreight.com 3/8 in. x 24 1.1 in.