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. Using an engine indoors CAN KILL YOU IN MINUTES. Engine exhaust contains carbon monoxide.
Table of Contents Safety Specifications.............................................. 2 Safety ��������������������������������������������������������� 3 Setup........................................................... 6 Operationr���������������������������������������������������� 8 Maintenances���������������������������������������������� 12 Troubleshooting.......................................... 16 Warranties.................................................. 18 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.
Set up Precautions Safety 1. Gasoline fuel and fumes are flammable, and potentially explosive. Use proper fuel storage and handling procedures. Do not store fuel or other flammable materials nearby. 4. Set up and use only on a flat, level, well‑ventilated surface. 2. Have multiple ABC class fire extinguishers nearby. 6. Use only lubricants and fuel recommended in the Specifications chart of this manual. 3. Operation of this equipment may create sparks that can start fires around dry vegetation.
21. Use the equipment, accessories, etc., in accordance with these instructions and in the manner intended for the particular type of equipment, taking into account the working conditions and the work to be performed. Use of the equipment for operations different from those intended could result in a hazardous situation. 22. Do not operate the equipment with known leaks in the engine’s fuel system. 23.
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 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.
High Altitude Operation Above 3000 feet NOTICE Warranty void if necessary adjustments are not made for high altitude use. At high altitudes, the engine’s carburetor, governor (if so equipped), and any other parts that control the fuel-air ratio will need to be adjusted by a qualified mechanic to allow efficient high-altitude use and to prevent damage to the engine and any other devices used with this product. The fuel system on this engine may be influenced by operation at higher altitudes.
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.
Checking and Filling Fuel 2. Unscrew and remove the Fuel Cap. 3. Remove the Strainer and remove any dirt and debris. Then replace the Strainer. Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol. Add fuel stabilizer to the gasoline or the Warranty is VOID. 4. If needed, fill the Fuel Tank to about 1 inch under the fill neck of the Fuel Tank with 87 octane or higher unleaded gasoline that has been treated with a fuel stabilizer additive.
Manual Start Safety 1. To start a cold engine, move the Choke to the START position. To restart a warm engine, leave the Choke in the RUN position. 1 2. Open the Fuel Valve. 2 Setup 3. Slide the Throttle or Speed Control Lever to 1/3 away from the SLOW position (the “turtle”). 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. 3 Operation O OFF 4.
6. Allow the Engine to run for several seconds. Then, if the Choke lever is in the START position, move the Choke Lever very slowly to its RUN position. 6 Safety Note: Moving the Choke Lever too fast could stall the engine. IMPORTANT: Allow the engine to run at no load for five minutes with no load after each start‑up so that the engine can stabilize. 7. Adjust the Throttle as needed. Break-in Period: a. Breaking-in the engine will help to ensure proper equipment and engine operation. b.
Maintenance WARNING Safety 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. Follow all service instructions in this manual.
Checking and Filling Fuel Engine Oil Change 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. CAUTION! Oil is very hot during operation and can cause burns. Wait for engine to cool before changing oil. 3. Remove the Strainer and remove any dirt and debris. Then replace the Strainer.
Air Filter Element Maintenance 1. Remove the air cleaner cover and the air filter element(s) 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.
When the equipment is to remain idle for longer than 20 days, prepare the engine for storage as follows: c. Replace spark plug, but leave spark plug cap disconnected. 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. d. Pull Starter Handle to distribute oil in cylinder.
Troubleshooting Problem Possible Causes Engine will not start FUEL RELATED: Probable Solutions FUEL RELATED: Safety Setup Operation Maintenance 1. No fuel in tank or fuel valve closed. 1. Fill fuel tank and open fuel valve. 2. Choke not in START position, cold engine. 2. Move Choke to START position. 3. Gasoline with more than 10% ethanol used. (E15, E20, E85, etc.) 3. Clean out ethanol rich gasoline from fuel system. Replace components damaged by ethanol.
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.
HFT warrants to a first retail purchaser and each subsequent purchaser that the engine is free from defects in materials and workmanship that cause the failure of warranted parts for a period of two (2) years after the date of delivery to the first retail purchaser. 2. No Charge Repair or Replacement 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.
Parts Lists and Diagrams 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 46 47 48 49 50 51 52 53 Description Head Subassembly, Cylinder Plug, Spark Bolt, Cylinder Head Pin Gasket, Cylinder Head Cover Subassembly, Cylinder Head Gasket, Cylinder Head Cover Tube, Breather Bolt Subassembly, Cylinder Head Cover Bolt Subassembly, Cylinder Head Cover Stud Stud Crankcase Subassembly
Safety 79 33 33 33 50 33 52 33 48 50 56 49 33 33 30 48 56 51 36 28 34 42 43 44 55 72 38 3 2 39 3 3 3 31 41 12 40 35 12 38 1 32 29 11 32 45 5 11 4 Setup 77 7 57 57 4 27 27 46 37 54 47 54 16 86 26 15 53 53 83 26 87 87 26 84 91 84 85 26 21 20 89 80 90 25 24 23 13 73 88 81 98 103 19 97 21 103 22 17 20 82 14 18 96 96 101 104 95 99 105 100 102 94 93 64 92 63 60 62 67 66 66 66 Note: Some parts are listed and
0.47" / 12mm Setup 7.69" / 195.5mm 6.12" / 155.5mm Operation Maintenance 301cc Engine For technical questions, please call 1-888-866-5797. Page 22 Mounting Hole Diagram Safety 0.51" / 13mm Note: Not to scale. 3.78" / 95.
30º 3/8-16 UNC Setup 30º 5/16-24 UNF Operation m 3m / 11 Ø3.48 in. / 88.5mm Ø2.2 in. / 56mm Ø1 in. / 25.4mm Ø1 in. / 25.4mm 0.25 in. / 6.3mm Maintenance in. Ø1.1 in. / 28mm Ø1.375 in. / 35mm Page 23 For technical questions, please call 1-888-866-5797. 301cc Engine Safety Power Take-Off Diagram Ø5.43 in. / 138mm .45 Ø4 45º 0.36 in. / 9.13mm Note: Not to scale. Ø6.5 in. / 165.1mm 45º Ø2.84 in. / 72.
3491 Mission Oaks Blvd.
