3 HP ENGINE MANUAL Set up, Operating, and Servicing Instructions Using an engine indoors CAN KILL YOU IN MINUTES. Engine exhaust contains carbon monoxide. This is a poison you cannot see or smell. NEVER use inside a home or garage, EVEN IF doors and windows are open. Only use OUTSIDE and far away from windows, doors, and vents. Distributed exclusively by Harbor Freight Tools®. 3491 Mission Oaks Blvd., Camarillo, CA 93012 Visit our website at: http://www.harborfreight.
Contents Important SAFETY Information............................ 3 Technical Specifications.... 7 UNPACKING.................................. 7 Set Up Instructions............... 8 Operating Instructions...... 8 Primary Engine Components.. 8 Pre-Start Checks........................ 9 Starting the Engine................. 10 Charging System Circuit Protector................................. 11 To Stop The Engine................... 11 Servicing.................................. 12 Maintenance Procedures.....
Save This Manual NOTICE is used to address practices not related to personal injury. 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.
5. 6. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during set up. Use only lubricants and fuel recommended in the Specifications chart of this manual. Operating precautions 1. 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. NEVER use inside a home or garage, EVEN IF doors and windows are open. Only use OUTSIDE and far away from windows, doors, and vents. 2.
sary when near the engine’s magneto or recoil starter. 22. Do not cover the engine or equipment during operation. 14. Use only accessories that are recommended by Harbor Freight Tools for your model. Accessories that may be suitable for one piece of equipment may become hazardous when used on another piece of equipment. 23. Keep the equipment, engine, and surrounding area clean at all times. 15. Do not operate in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
for a purpose for which it is not intended. Service precautions 1. Before service, maintenance, or cleaning: a. Remove the Ignition Key and close the Fuel Valve. certain about your ability to perform safely or correctly. 7. Store equipment out of the reach of children. 8. Follow scheduled engine and equipment maintenance. Refueling: 1. Do not smoke, or allow sparks, flames, or other sources of ignition around the equipment, especially when refuelling.
Technical Specifications Engine Type 13 HP Horizontal Single Cylinder 4 stroke Forced air cooled 88mm x 64mm 389cc 8.0:1 Cooling System Bore x Stroke Displacement Compression Ratio Rotation viewed from PTO Counterclockwise (power takeoff - the output shaft) UNPACKING When unpacking, make sure that the item is intact and undamaged. If any parts are missing or broken, please call Harbor Freight Tools at 1-800-444-3353 as soon as possible.
Set Up Instructions 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. Operating Instructions 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. Risk of accidental Primary Engine Components starting; resulting Fuel in serious personal injury.
tween the high and low marks on the Dipstick. 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. 4. If the oil level is below the end of the dipstick add the appropriate type of oil until the oil level is between the high and the low marks.
to 5 seconds. Note: To prolong starter life, use short starting cycles (5 seconds maximum). Then wait one minute before attempting to start again. Starting the Engine Start Procedure Before starting the engine: a. Follow the Set Up Instructions 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 that follows. 1. Open the Fuel Valve. 2. Close the Throttle. 3.
• Do not operate the engine at its maximum speed. 3. The maintenance break-in period will last about 20 hours of use. After this period: • Change the engine oil. Under normal operating conditions subsequent maintenance follows the schedule explained in the Servicing section. Charging System Circuit Protector 1. If the Charging System Overload Indicator lights, it means that the battery is not charging correctly. 2. Possible issues include: a. A short in the battery charging circuit. b.
Servicing 3. Replace the drain plug and tighten it. 4. Refill the oil to the proper level followRisk of serious ing the instructions under the Checkpersonal injury ing the Oil Level section on page 9 of from accidental starting. this manual. Remove the Ignition Key, close the Fuel Valve, wait for Air Filter Element Maintenance the engine to cool, and unplug the spark plug wire(s) before 1. Remove the air filter cover and the performing any inspection, air filter elements and check for dirt.
3. 4. 5. 6. 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. When installing a new spark plug, adjust the plug’s gap to the specification on the Technical Specifications chart. Do not pry against the electrode, the spark plug can be damaged. Install the new spark plug or the cleaned spark plug into the engine.
Cleaning, Maintenance, and Lubrication Schedule Note: This maintenance schedule is intended solely as a general guide. If performance decreases or if equipment operates unusually, check systems immediately. The maintenance needs of each piece of equipment will differ depending on factors such as duty cycle, temperature, air quality, fuel quality, and other factors. Before Each Use: a. Check engine oil level. b. Check air cleaner.
tablespoon of engine oil into cylinder through spark plug hole. d. Replace spark plug, but leave spark plug wire disconnected. e. Pull Starter Handle to distribute oil in cylinder. Pull engine through one or two revolutions. Stop when you feel the piston start the compression stroke (when you start to feel resistance). f. Disconnect battery cables (if equipped). 3. Apply a thin coat of rust preventive oil to all metal parts. 4. Cover and store in a dry, well-ventilated area out of reach of children. 5.
Troubleshooting Problem Possible Causes Engine will not start Fuel Related: 1. No fuel in tank or fuel valve closed. 2. Choke not closed. 3. Low quality or deteriorated, old gasoline. 4. Carburetor not primed. Probable Solutions Fuel Related: 1. Fill fuel tank and open fuel valve. 2. Close choke if engine cold. 3. Use only fresh 89+ octane unleaded gasoline. 4. Pull on Starter Handle to prime. 5. Dirty fuel passageways blocking fuel flow. 5. Clean out passageways using fuel additive.
Troubleshooting Problem Possible Causes Engine misfires 1. Spark plug wire loose. 2. Incorrect spark plug gap or damaged spark plug. 3. Defective spark plug wire. 4. Old or low quality gasoline. 5. Incorrect compression. Engine stops suddenly 1. Low oil shutdown. 2. Fuel tank empty or full of impure or low quality gasoline. 3. Defective fuel tank cap creating vacuum, preventing proper fuel flow. 4. Faulty magneto. 5. Clogged Fuel Filter Probable Solutions 1. Check wire connections. 2.
Part 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 Description Washer Drain plug Oil seal, crankshaft Seal Diode Crankcase Oil seal, regulating sway bar Washer Split pin Regulating sway bar Bolt M6×14 Oil sensor Piston ring set Piston pin circlip Piston Piston pin Connecting rod assy Woodruff key Bearing 6206 Crankshaft assy Oil plug with Seal Oil plug Seal Crankcase cover Driven gear, regulator assy Gasket, cra
Parts List (continued) Part 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 Description Intake valve Spring retainer, exhaust valve Valve spring Spring seat, exhaust valve Spring seat, intake valve Cap Bearing 6202 Balancing shaft Fuel tank connect Bolt M8×20 Fuel tank shock pad Relay, Start-Up Rotor Comp Starting Clutch Starter Motor Assy. Base, Starter Housing, Starter Clutch Drive Gear Brush, Comp. Stator Assy.
Assembly Diagram 13 HP Engine For technical questions, please call 1-800-444-3353.
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.
Harbor Freight Tools Emission Control Defects Warranty Coverage c) d) Engines are warranted for a period of two (2) years relative to emission control parts defects, subject to the provisions set forth below. If any emission related part on your engine is defective, the part will be repaired or replaced by HFT. e) f) Owner’s Warranty Responsibilities • As the engine owner, you are responsible for the performance of the required maintenance listed in your Owner’s Manual.
