Manual For The 69731 173 Cc OHV Vertical Shaft Gas Engine Certified California
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User Manual: Manual for the 69731 173 cc OHV Vertical Shaft Gas Engine - Certified for California 5.5 HP (173cc) OHV Vertical Shaft Gas Engine CARB
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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 16l 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. Visit our website at: http://www.harborfreight.com Email our technical support at: predator@harborfreight.com Email our engine support at: predator@harborfreight.com When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, please call 1-888-866-5797 as soon as possible. Copyright© 2012 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included. Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL. Table of Contents Specifications ............................................. 2 Maintenance .............................................. 13 Safety ......................................................... 3 Warranties ................................................. 20 Set Up......................................................... 7 Parts Lists and Diagrams .......................... 22 Operation ................................................... 10 Specifications Engine Type Cooling System Type Fuel Capacity Type SAE Engine Oil Capacity Run Time @ 50% Load with full tank Sound Level Bore x Stroke Displacement Compression Ratio Rotation viewed from PTO (power takeoff - the output shaft) Mounting Base Pattern Shaft dia. Keyway Shaft End Tapped Type Spark Plug Valve Clearance Speed Page 2 Gap Intake Exhaust Idle Vertical Single Cylinder 4 stroke OHV EPA phase III and CARB compliant Forced air cooled 87+ octane stabilizer treated unleaded gasoline 0.3 gallon (1.1 liter) 10W-30 above 32° F 5W30 at 32° F or below 0.6 Quart 40 minutes 104 dB 70 mm x 45 mm 173cc 8.5:1 Counterclockwise 8" (203mm); 3/8"-24 UNF tapped hole; 2 x 8.7mm through-hole 7/8″ x 3.16″ 3/16″ (4.76 mm) 3/8″ - 24 NGK® BP-6ES/BPR6ES DENSO®: W16EPR-U/W16EP-U CHAMPION®: RN9YC4 NHSP®: F7TC/F7RTC TORCH®: F7TC/F7RTC 0.027" - 0.031" 0.004" - 0.006" 0.006" - 0.008" 1,800 ± 50 RPM For technical questions, please call 1-888-866-5797. Item 69731 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. Addresses practices not related to personal injury. Symbol Definitions Symbol RpM Hp property or Statement Revolutions Per Minute Horsepower WARNING marking concerning Risk of Eye Injury. Wear ANSI-approved safety goggles with side shields. Read the manual before set-up and/or use. WARNING marking concerning Risk of Hearing Loss. Wear hearing protection. Symbol property or Statement WARNING marking concerning Risk of Respiratory Injury. Operate engine OUTSIDE and far away from windows, doors, and vents. WARNING marking concerning Risk of Fire while handling fuel. Do not smoke while handling fuel. WARNING marking concerning Risk of Fire. Do not refuel while operating. Keep flammable objects away from engine. WARNING! Read all instructions. Failure to follow all instructions listed below may result in fire, serious injury and/or DEATH. The warnings and precautions discussed in this manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator. OpERATION SETUp Safety Warnings Set up precautions 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. A spark arrestor may be required. The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements. Item 69731 5. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during set up. For technical questions, please call 1-888-866-5797. Page 3 MAINTENANCE SAVE THESE INSTRUCTIONS Operating precautions 1. SAFETY 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. 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. Electromagnetic fields in close proximity to a heart pacemaker could cause pacemaker interference or pacemaker failure. Caution is necessary when near the engine’s magneto or recoil starter. 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. SETUp 15. Do not operate in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Gasoline-powered engines may ignite the dust or fumes. Only use OUTSIDE and far away from windows, doors, and vents. 2. Keep children away from the equipment, especially while it is operating. 16. Stay alert, watch what you are doing and use common sense when operating this piece of equipment. Do not use this piece of equipment while tired or under the influence of drugs, alcohol or medication. OpERATION 3. Keep all spectators at least six feet from the Engine during operation. 17. Do not overreach. Keep proper footing and balance at all times. This enables better control of the equipment in unexpected situations. 4. Fire Hazard! Do not fill gas tank while engine is running. Do not operate if gasoline has been spilled. Clean spilled gasoline before starting engine. Do not operate near pilot light or open flame. 18. Use this equipment with both hands only. Using equipment with only one hand can easily result in loss of control. 5. Do not touch engine during use. Let engine cool down after use. 6. Never store fuel or other flammable materials near the engine. 7. Only use a suitable means of transport and lifting devices with sufficient weight bearing capacity when transporting the Engine. 19. Dress properly. Do not wear loose clothing or jewelry. Keep hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts. 20. Parts, especially exhaust system components, get very hot during use. Stay clear of hot parts. 21. Do not cover the engine or equipment during operation. 8. Secure the Engine on transport vehicles to prevent the tool from rolling, slipping, and tilting. 22. Keep the equipment, engine, and surrounding area clean at all times. 9. Industrial applications must follow OSHA requirements. 23. Do not smoke, or allow sparks, flames, or other sources of ignition around the equipment, especially when refuelling. MAINTENANCE 10. Do not leave the equipment unattended when it is running. Turn off the equipment (and remove safety keys, if available) before leaving the work area. 11. Engine can produce high noise levels. Prolonged exposure to noise levels above 85 dBA is hazardous to hearing. Always wear ear protection when operating or working around the gas engine while it is operating. 24. 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. 25. Do not operate the equipment with known leaks in the engine’s fuel system. Page 4 For technical questions, please call 1-888-866-5797. Item 69731 27. 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. 28. Keep hands and feet away from moving parts. Do not reach over or across equipment while operating. 29. Before use, check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the equipment’s operation. If damaged, have the equipment serviced before using. Many accidents are caused by poorly maintained equipment. 30. Use the correct equipment for the application. Do not modify the equipment and do not use the equipment for a purpose for which it is not intended. 31. Follow equipment manufacturer’s operation precautions. SAFETY 26. 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.) a. Release the brake handle, stopping the engine. b. Allow the engine to completely cool. c. Then, remove the spark plug cap from the spark plug. 2. Keep all safety guards in place and in proper working order. Safety guards include muffler, air cleaner, mechanical guards, and heat shields, among other guards. 3. Do not alter or adjust any part of the equipment or its engine that is sealed by the manufacturer or distributor. Only a qualified service technician may adjust parts that may increase or decrease governed engine speed. 4. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during service. 5. Maintain labels and nameplates on the equipment. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement. 6. Have the equipment serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the equipment is maintained. Do not attempt any service or maintenance procedures not explained in this manual or any procedures that you are uncertain about your ability to perform safely or correctly. THE ENGINE BRAKE IS FOR EMERGENCY SHUTOFF; DO NOT REpLACE THE BRAKE SpRING WITH A WEAKER SpRING. 7. Store equipment out of the reach of children. 8. Follow scheduled engine and equipment maintenance. Refueling: 1. Do not refill the fuel tank while the engine is running or hot. OpERATION 1. Before service, maintenance, or cleaning: SETUp Service precautions 2. Do not smoke, or allow sparks, flames, or other sources of ignition around the equipment, especially when refuelling. 3. Do not fill fuel tank to the top. Leave a little room for the fuel to expand as needed. 4. Refuel in a well-ventilated area only. 5. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air. MAINTENANCE SAVE THESE INSTRUCTIONS. Item 69731 For technical questions, please call 1-888-866-5797. Page 5 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. Item 69731 Set Up 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. The emission control system for this Generator’s Engine is warranted for standards set by the U.S. Environmental Protection Agency and by the California Air Resources Board (also known as CARB). For warranty information, refer to the last pages of this manual. 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. MAINTENANCE OpERATION SETUp WARNING! DO NOT INSTALL THIS ENGINE ON A VEHICLE. NOT FOR HIGHWAY USE. FOLLOW ALL AppLICABLE LAWS FOR INSTALLATION AND USE. Item 69731 For technical questions, please call 1-888-866-5797. Page 7 High Altitude Operation Above 3000 feet WARNING! TO pREVENT SERIOUS INJURY FROM FIRE: Follow instructions 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 proceeding. Do not smoke. SAFETY 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. Proper operation can be ensured by installing an altitude kit at altitudes higher than 3000 ft. above sea level. At elevations above 8000 ft, the engine may experience decreased performance, even with the proper main jet. Operating this engine without the proper altitude kit installed may increase the engine’s emissions and decrease fuel economy and performance. The kit should be installed by a qualified mechanic. 1. Turn off the engine. 2. Close the fuel valve. 3. Place a bowl under the fuel cup to catch any spilled fuel. Carburetor Assembly CAUTION! Carburetor bowl may have gas in it which will leak upon removing the bolt. 4. Unthread the bolt holding the fuel cup. SETUp 5. Remove the bolt, Bolt Seal, fuel cup, Fuel Cup Seal and Main Jet from the body of the carburetor assembly. A carburetor screwdriver (not included) is needed to remove and install the Main Jet. Fuel Cup Seal Mixing Tube (might remain inside carburetor) Note: The mixing tube is held in place by the Main Jet and might fall out when it is removed. If it falls out, replace it in the same orientation before replacing the Main Jet. Main Jet 6. Replace the Main Jet with the replacement Main Jet needed for your altitude range (part 1a or 2a). Fuel Cup Note: The Fuel Cup Seal and Bolt Seal may be damaged during removal and should be replaced with the new ones from the kit. Bolt Seal 7. Replace the Fuel Cup Seal (4a), fuel cup, Bolt Seal (3a), and bolt. Tighten in place. OpERATION NOTICE: Do not cross thread bolt when tightening. Finger tighten first and then use a wrench to make sure the bolt is properly threaded. Bolt 8. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air. High Altitude Kit parts List - A part 1a 2a 3a 4a Description Main Jet 3000-6000 ft. Main Jet 6000-8000 ft. Bolt Seal Fuel Cup Seal Qty 1 1 1 2 MAINTENANCE Page 8 For technical questions, please call 1-888-866-5797. Item 69731 1. IMpORTANT: If you have any doubts about your ability to perform the following procedures, have a qualified service technician perform the installation. 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. Adjust the brake cable sheath to remove all slack and secure it in place using the adjusting nuts on the cable sheath, as shown in the illustration below. THE ENGINE BRAKE IS FOR EMERGENCY SHUTOFF; DO NOT REpLACE THE BRAKE SpRING WITH A WEAKER SpRING. If operating the engine brake is too difficult, a qualified technician must install a different brake handle on the mower. SAFETY Installation Note: The brake cable on some mowers may need to be adjusted in a different manner. Install according to mower manufacturer’s instructions. b a. one 3/8 in. x 24 threaded; 1 in. deep b. two Ø0.34 in. / 8.7mm unthreaded (use 5/16 in. / 8mm diameter hardware) Throttle Control 4. Set the Engine upright on the mower, and align at least three engine mounting holes with mower mounting holes. Throttle Cable NOTE: Depending on the mower, it may be necessary to drill mounting holes or make a mounting plate to align with the engine mounting holes. Only a qualified technician should attempt these solutions. Bracket and Bolt 7. Attach the end of the mower’s Throttle Cable to the Throttle Control. Use the Bracket and Bolt to secure its sheath in place as shown above. 8. Refer to the mower’s service manual for instructions on how to properly attach a belt drive pulley, chain drive gear, etc. onto the output shaft of the Engine. MAINTENANCE 5. Use hardened, stainless steel Bolts, Lock Washers, and Washers (not included) of appropriate length and diameter to secure the Engine to the mower. Make sure the hardware will not contact moving parts during operation. Brake Cable Bracket OpERATION Brake Cable SETUp Brake Arm b Item 69731 For technical questions, please call 1-888-866-5797. Page 9 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 Engine Oil Checking and Filling Fuel NOTICE: Your Warranty is VOID if the engine’s crankcase is not properly filled with oil before each use. Before each use, check the oil level. Engine will not start with low or no engine oil. 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. Make sure the engine is stopped and is level. 2. Close the Fuel Valve. SETUp 3. Clean the top of the Dipstick and the area around it. Remove the Dipstick by turning it counterclockwise, and wipe it off with a clean, lint free rag. Full level Full level 1. Clean the Fuel Cap and the area around it. 2. Unscrew and remove the Fuel Cap. 3. 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. Follow fuel stabilizer manufacturer’s recommendations for use. Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol. 4. Reinsert the Dipstick without threading it in and remove it to check the oil level. The oil level should be up to the full level as shown above. OpERATION 5. If the oil level is at or below the low mark add the appropriate type of oil until the oil level is at the proper level. SAE 10W-30 oil is recommended for general use. (The SAE Viscosity Grade chart on page 6 in the Maintenance section shows other viscosities to use in different average temperatures.) Note: Do not use gasoline that has been stored in a metal fuel container or a dirty fuel container. It can cause particles to enter the carburetor, effecting engine performance and/or causing damage. 4. Then replace the Fuel Cap. 5. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air. 6. Thread the dipstick back in clockwise. NOTICE: Do not run the engine with too little oil. Engine will shut off if engine oil level is too low. MAINTENANCE Page 10 For technical questions, please call 1-888-866-5797. Item 69731 Starting the Engine Before Starting the Engine: 2. Adjust the Mower’s Throttle control to full throttle. SETUp 1 2 OpERATION 1. Press the Priming Bulb 2-3 times to prime 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 stabilizer-treated unleaded gasoline 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. Note: Location, operation, and design of the Throttle control will vary from manufacturer to manufacturer. 3 Item 69731 For technical questions, please call 1-888-866-5797. MAINTENANCE 3. Hold the mower’s brake handle closed. Page 11 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. Note: Do not let the Starter Handle snap back against the engine. Hold it as it recoils so it doesn’t hit the engine. 4 SAFETY Note: If engine does not start, check engine oil level. Engine will not start with low or no engine oil. 5. Allow the Engine to run for several seconds. Then, the Mower’s Throttle control can be adjusted as desired for operation. 5 IMpORTANT: Allow the engine to run at no load for a minute or two after each start-up so that the engine can stabilize. SETUp 6. Break-in period: a. Breaking-in the engine will help to ensure proper equipment and engine operation. b. The operational break-in period will last about 3 hours of use. During this period: • Do not apply a heavy load to the equipment. c. 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 MAINTENANCE AND SERVICING section. OpERATION Stopping the Engine To stop the engine, release the brake handle. NOTICE See Long-Term Storage chart on page 16 for complete storage instructions. MAINTENANCE Page 12 For technical questions, please call 1-888-866-5797. Item 69731 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. The engine may fail critically if not serviced properly. Many maintenance procedures, including any not detailed in this manual, will need to be performed by a qualified technician for safety. If you have any doubts about your ability to safely service the equipment or engine, have a qualified technician service the equipment instead. 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. Note: The following procedures are in addition to the regular checks and maintenance explained as part of the regular operation of the engine and equipment. procedure Before Each Use Monthly or Every 3 mo. or Every 6 mo. or every 20 50 hr. of use 100 hr. of use hr. of use Yearly or every 300 hr. of use SETUp Cleaning, Maintenance, and Lubrication Schedule Every 2 Years Brush off outside of engine Check engine oil level Check air cleaner Check deposit cup * Clean/replace air cleaner Check and clean spark plug 1. Check/adjust idle speed 2. Check/adjust valve clearance 3. Clean fuel tank, strainer and carburetor ** 4. Clean carbon build-up from combustion chamber Replace fuel line if necessary ** OpERATION Change engine oil ** MAINTENANCE *Service more frequently when used in dusty areas. **These items should be serviced by a qualified technician. Item 69731 For technical questions, please call 1-888-866-5797. Page 13 SAFETY 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. 1. Clean the Fuel Cap and the area around it. 2. Unscrew and remove the Fuel Cap. 3. 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. Follow fuel stabilizer manufacturer’s recommendations for use. Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol. SETUp Note: Do not use gasoline that has been stored in a metal fuel container or a dirty fuel container. It can cause particles to enter the carburetor, effecting engine performance and/or causing damage. 1. Make sure the engine is stopped and is level. 2. Close the Fuel Valve. 3. Place a drain pan (not included) underneath the crankcase’s drain plug. 4. Remove the drain plug and, if possible, tilt the crankcase slightly to help drain the oil out. Recycle used oil. 5. Replace the drain plug and tighten it. 6. Clean the top of the Dipstick and the area around it. Remove the Dipstick by turning it counterclockwise, and wipe it off with a clean, lint free rag. Full level Full level 4. Then replace the Fuel Cap. 5. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air. 7. Add the appropriate type of oil until the oil level is at the full level. SAE 10W-30 oil is recommended for general use. The SAE Viscosity Grade chart shows other viscosities to use in different average temperatures. SAE Viscosity Grades 30 OpERATION 10W-30 5W-30 -20 0 20 40 60 80 100°F Average outdoor temperature 8. Thread the dipstick back in clockwise. NOTICE: Do not run the engine with too little oil. Engine will not start with low or no engine oil. MAINTENANCE Page 14 For technical questions, please call 1-888-866-5797. Item 69731 Air Filter Element Maintenance Spark plug Maintenance 1. Remove the air filter cover and the air filter elements and check for dirt. Clean as described below. 2. Cleaning: • 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. 3. Install the cleaned filter. Secure the Air Cleaner Cover before use. SAFETY 1. Disconnect spark plug cap from end of plug. Clean out debris from around spark plug. 2. Using a spark plug wrench, remove the spark plug. 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. Recommended Spark plugs Brand NGK® NHSP® / TORCH® DENSO® CHAMPION® plug BP-6ES/BPR6ES F7TC/F7RTC W16EPR-U/W16EP-U RN9YC4 SETUp • For foam filter elements: Wash the element in warm water and mild detergent several times. Rinse. Squeeze out excess water and allow it to dry completely. Soak the filter in lightweight oil briefly, then squeeze out the excess oil. Spark plug Cap NOTICE: Using an incorrect spark plug may damage the engine. 5. Install the new spark plug or the cleaned spark plug into the engine. Gasket-style: Finger-tighten until the gasket contacts the cylinder head, then about 1/2-2/3 turn more. Non-gasket-style: Finger-tighten until the plug contacts the head, then about 1/16 turn more. OpERATION 4. When installing a new spark plug, adjust the plug’s gap to the specification on the Specifications chart. Do not pry against the electrode, the spark plug can be damaged. NOTICE: Tighten the spark plug properly. If loose, the spark plug will cause the engine to overheat. If overtightened, the threads in the engine block will be damaged. MAINTENANCE 6. Apply dielectric spark plug boot protector (not included) to the end of the spark plug and reattach the wire securely. Item 69731 For technical questions, please call 1-888-866-5797. Page 15 Long-Term Storage SAFETY When the equipment is to remain idle for longer than 20 days, prepare the Engine for storage as follows: b. Remove the drain bolt from the bottom of the carburetor bowl and allow the fuel to drain. 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. c. After all fuel has drained, reinstall the drain bolt. Tighten securely. 2. FUEL: To protect the fuel tank during storage, fill the tank with gasoline that has been treated with a fuel stabilizer additive. Follow fuel stabilizer manufacturer’s recommendations for use. Refer to Checking and Filling Fuel on page 10. SETUp WARNING! TO pREVENT SERIOUS INJURY FROM FIRE: Fill 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. a. Place a funnel leading to a proper gasoline container below the carburetor. 3. LUBRICATION: a. Change engine oil. b. Clean out area around spark plug. Remove spark plug and pour one tablespoon of engine oil into cylinder through spark plug hole. c. Replace spark plug, but leave spark plug cap disconnected. d. Pull Starter Handle to distribute oil in cylinder. Stop after one or two revolutions when you feel the piston start the compression stroke (when you start to feel resistance). 4. STORAGE AREA: Cover and store in a dry, level, well-ventilated area out of reach of children. Storage area should also be away from ignition sources, such as water heaters, clothes dryers, and furnaces. NOTICE: During extended storage periods the Engine must be started every 3 months and allowed to run for 15 – 20 minutes or the Warranty is VOID. OpERATION 5. AFTER STORAGE: Before starting the Engine during or after storage, keep in mind that untreated gasoline will deteriorate quickly. Drain the fuel tank and change to fresh fuel if untreated gasoline has been sitting for a month, if treated gasoline has been sitting beyond the fuel stabilizer’s recommended time period, or if the Engine does not start. Drain plug MAINTENANCE Page 16 For technical questions, please call 1-888-866-5797. Item 69731 Troubleshooting FUEL RELATED: 1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline and open fuel valve. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 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. Use fresh 87+ octane stabilizertreated unleaded gasoline only. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 4. Low quality or deteriorated, old gasoline. 4. Use fresh 87+ octane stabilizer-treated unleaded gasoline. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 5. Carburetor not primed. 5. Pull on Starter Handle to prime. 6. Dirty fuel passageways. 6. Clean out passageways using fuel additive. Heavy deposits may require further cleaning. 7. Carburetor needle stuck. Fuel can be smelled in the air. 7. Gently tap side of carburetor float chamber with screwdriver handle. 8. Too much fuel in chamber. This can be caused by the carburetor needle sticking. 8. Turn Choke to RUN position. Remove spark plug and pull the start handle several times to air out the chamber. Reinstall spark plug and set Choke to START position. 9. Clogged Fuel Filter. 9. Replace Fuel Filter. IGNITION (SPARK) RELATED: IGNITION (SPARK) RELATED: 1. Spark plug cap not connected securely. 1. Connect spark plug cap properly. 2. Spark plug electrode wet or dirty. 2. Clean spark plug. 3. Incorrect spark plug gap. 3. Correct spark plug gap. 4. Spark plug cap broken. 4. Replace spark plug cap. 5. Incorrect spark timing or faulty ignition system. 5. Have qualified technician diagnose/ repair ignition system. COMPRESSION RELATED: COMPRESSION RELATED: 1. Cylinder not lubricated. Problem after long storage periods. 1. Pour tablespoon of oil into spark plug hole. Crank engine a few times and try to start again. 2. Loose or broken spark plug. (Hissing noise will occur when trying to start.) 2. Tighten spark plug. If that does not work, replace spark plug. If problem persists, may have head gasket problem, see #3. 3. Loose cylinder head or damaged head gasket. (Hissing noise will occur when trying to start.) 3. Tighten head. If that does not remedy problem, replace head gasket. 4. Engine valves or tappets mis-adjusted or stuck. 4. Have qualified technician adjust/ repair valves and tappets. ENGINE OIL RELATED: ENGINE OIL RELATED: 1. Low engine oil. 1. Fill engine oil to proper level. Check engine oil before EVERY use. 2. Engine mounted on slope, triggering low oil shutdown. 2. Operate engine on level surface. Check engine oil level. OpERATION 1. No fuel in tank or fuel valve closed. Follow all safety precautions whenever diagnosing or servicing the equipment or engine. Item 69731 For technical questions, please call 1-888-866-5797. SAFETY Engine will not start FUEL RELATED: probable Solutions SETUp possible Causes MAINTENANCE problem Page 17 problem Engine misfires possible Causes probable Solutions 1. Check cap and 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 stabilizer-treated 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. Fuel tank empty or full of impure or low quality gasoline. 1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 2. Low oil shutdown. 2. Fill engine oil to proper level. Check engine oil before EVERY use. 3. Defective fuel tank cap creating vacuum, preventing proper fuel flow. 3. Test/replace fuel tank cap. 4. Faulty magneto. 4. Have qualified technician service magneto. 5. Disconnected or improperly connected spark plug cap. 5. Secure spark plug cap. Engine stops when under heavy load 1. Dirty air filter 1. Clean element. 2. Engine running cold. 2. Allow engine to warm up prior to operating equipment. Engine knocks 1. Old or low quality gasoline. 1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 2. Engine overloaded. 2. Do not exceed equipment’s load rating. 3. Incorrect spark timing, deposit buildup, worn engine, or other mechanical problems. 3. Have qualified technician diagnose and service engine. 1. Impure or low quality gasoline. 1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 2. Engine too cold. 2. Use cold weather fuel and oil additives to prevent backfiring. 3. Intake valve stuck or overheated engine. 3. Have qualified technician diagnose and service engine. 4. Incorrect timing. 4. Check engine timing. SAFETY 1. Spark plug cap loose. Engine stops suddenly SETUp OpERATION Engine backfires After sudden impact, engine will run, but equipment will not operate Shaft key or other shear pin broken by impact to disconnect engine and limit damage. Have qualified technician check and replace broken shaft key or other shear pins. Follow all safety precautions whenever diagnosing or servicing the equipment or engine. MAINTENANCE Page 18 For technical questions, please call 1-888-866-5797. Item 69731 SAFETY SETUp OpERATION MAINTENANCE Item 69731 For technical questions, please call 1-888-866-5797. Page 19 Warranties Limited 90 Day Warranty (Retail) SAFETY 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. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the use of our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS, EXCEPT FOR THE EMISSIONS CONTROL SYSTEM WARRANTY BELOW. SETUp To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of our warranty, then you must bear the cost of returning the product. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Emissions Control System Warranty The California Air Resources Board and Harbor Freight Tools (HFT) are pleased to explain the emissions control system warranty on your 2017 Small Off-Road Engine, in addition to the Retail Warranty above. In California, new equipment that uses small off-road engines must be designed, built, and equipped to meet the State’s stringent anti-smog standards. HFT must warrant that the emissions control system on your engine will be free from defects in material and workmanship for two (2) years, provided there has been no abuse, neglect, or improper maintenance of your engine. Your emissions control system may include parts such as the carburetor or fuel-injection system, the ignition system, catalytic converter, fuel tanks, fuel lines, fuel caps, valves, canisters, vapor hoses, clamps, connectors, and other emissions-related assemblies. OpERATION Where a warrantable condition exists, HFT will repair or replace, at our option, your engine if at no cost to you, including diagnosis, parts and labor. MANUFACTURER’S WARRANTY COVERAGE This emissions control system is warranted for two years. If any emission-related part on your engine is defective, the part will be repaired or replaced by HFT. OWNER’S WARRANTY RESpONSIBILITIES As the engine owner, you are responsible for the performance of the required maintenance listed in your Owner’s Manual. As the engine owner, you should however be aware that HFT may deny you warranty coverage if your engine or a part has failed due to abuse (including failure to follow the fuel use instructions contained in this manual), neglect, improper maintenance, or unapproved modifications. MAINTENANCE You are responsible for contacting HFT as soon as the problem exists in order to obtain warranty repair or replacement, by doing either of the following: (a) contact HFT product support at 1-888-866-5797 or predator@harborfreight.com; or (b) bring the to your nearest Harbor Freight Tools retail store. The nearest Harbor Freight Tools retail store can be found on the internet at http://www.harborfreight.com. The warranty repairs or replacement should be completed in a reasonable amount of time, not to exceed 30 days. If you have a question regarding your warranty coverage, you should contact HFT product support at 1-888-866-5797 or predator@harborfreight.com. Page 20 For technical questions, please call 1-888-866-5797. Item 69731 GENERAL EMISSIONS WARRANTY COVERAGE d) Emission Warranty Parts List. 1. Fuel Metering System a. Carburetor and its internal parts (and/or pressure regulator or fuel injection system). b. Fuel tank. c. Cold start enrichment system. d. Air/fuel ratio feedback and control system. 2. Air Induction System a. Controlled hot air intake system. b. Intake manifold. c. Air filter. 3. Ignition System a. Spark plugs. b. Magneto ignition system. c. Spark advance/retard system. 4. Catalyst System (if so equipped) a. Exhaust pipe stud/exhaust manifold. b. Thermal reactor. c. Catalytic converter (if so equipped). 5. Particulate Controls a. Traps, filters, precipitators, and any other device used to capture particulate emissions. 6. Miscellaneous Items Used in Above Systems a. Vacuum, temperature and time sensitive valves and switches. b. Hoses, belts, connectors, and assemblies. 7. Evaporative Emission Control System a. Fuel tank. b. Fuel caps, valves, canisters, filters, vapor hoses, clamps, connectors, belts, and assemblies. HFT provides with each product written instructions for the maintenance and use of the product by the owner. Item 69731 For technical questions, please call 1-888-866-5797. Page 21 SETUp OpERATION c) The warranty on emissions-related parts is as follows: 1. Any warranted part that is not scheduled for replacement as required maintenance in the written instructions provided, is warranted for the warranty period stated above. If any such part fails during the period of warranty coverage, it will be repaired or replaced HFT. Any such part repaired or replaced under the warranty will be warranted for the remaining warranty period. 2. Any warranted part that is scheduled only for regular inspection in the written instructions is warranted for the warranty period stated above. A statement in the written instructions to the effect of “repair or replace as necessary” does not reduce the period of warranty coverage. Any such part repaired or replaced under warranty will be warranted for the remaining warranty period. 3. Any warranted part that is scheduled for replacement as required maintenance in the written instructions will be warranted for the period of time prior to the first scheduled replacement point for that part. If the part fails prior to the first scheduled replacement, the part will be repaired or replaced by HFT. Any such part repaired or replaced under warranty will be warranted for the remainder of the period prior to the first scheduled replacement point for the part. 4. Repair or replacement of any warranted part under the warranty will be performed at no charge to the owner at a retail store or by HFT paying for shipping the product for repair. 5. Notwithstanding the provisions herein, warranty services or repairs will be provided at all retail stores or by contacting HFT product support at 1-888-866-5797 or predator@harborfreight.com. 6. The owner will not be charged for diagnostic labor that leads to the determination that a warranted part is in fact defective, provided that such diagnostic work is performed at a retail store. 7. HFT is liable for damages to other engine components proximately caused by a failure under warranty of any warranted part. 8. Throughout the emissions warranty period stated above, HFT will maintain a supply of warranted parts sufficient to meet the expected demand for such parts. 9. Any replacement part may be used in the performance of any warranty maintenance or repairs and will be provided without charge to the owner. Such use will not reduce the warranty obligations of HFT. 10. Add-on or modified parts that are not approved by HFT may not be used. The use of any non-exempted addon or modified parts will be grounds for disallowing a warranty claim. HFT is not liable to warrant failures of warranted parts caused by the use of a non-exempted add-on or modified part. MAINTENANCE b) HFT warrants to the initial owner and each subsequent owner that the engine is: 1. Designed, built, and equipped so as to conform with all applicable regulations adopted by the Air Resources Board; and 2. Free from defects in materials and workmanship that causes the failure of a warranted part for a period of two years. SAFETY a) The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser. The warranty period is two years. 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. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO. parts List SETUp OpERATION MAINTENANCE part Description Qty part Description Qty part Description Qty 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 Cover, Cylinder Head Gasket, Cylinder Head Head Sub., Cylinder Gasket, Cylinder Head Bolt Plug, Spark Bolt, Cylinder Head Bracket, Muffler Shield Bolt Stud Pin Crankcase Sub. Shield, Crankcase Side Dipstick Sub., Oil Bolt Bolt Bracket, Fuel Tank Right Seal, Oil Bolt Bolt Plate, Breather Cover Gasket, Breather Breather Screen, Breather Shield, Crankcase Rear Bearing Bracket, Fuel Tank Left Bolt Arm, Governor Washer Seal, Oil Pin Gasket, Crankcase Pin Washer Block, Returning Oil 1 1 1 1 4 1 4 1 1 2 2 1 1 1 2 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Bolt Plate, Governor Spindle Seal, Oil Bolt Gear Asm, Governor Cover, Crankcase Ring, Primary Ring, Secondary Ring Set, Oil Piston Clip, Piston Pin Pin, Piston Rod, Connecting Crankshaft Asm. Nut, Valve Lock Nut, Valve Adjusting Seat, Valve Spring Rocker, Valve Spring, Valve Guide, Seal Bolt, Valve Adjusting Valve, Intake Plate Sub., Lifter Stopper Lifter, Valve Tappet, Valve Camshaft Asm. Valve, Exhaust Starter Asm, Recoil Housing, Engine Shroud Nut Stud Stud Gasket, Insulator Plate Plate, Carb. Insulator Gasket, Carburetor 1 1 1 6 1 1 1 1 1 1 2 1 1 1 2 2 2 2 2 1 2 1 1 2 2 1 1 1 1 1 3 2 1 1 1 2 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 Gasket, Carb. Insulator Carburetor Asm. Gasket, Air Cleaner Valve, Enrichment Gasket, Air Cleaner Tube, Breather Nut Case, Air Cleaner Element, Air Cleaner Cover, Air Cleaner Case Cover, Muffler Outer Muffler Asm. Gasket, Exhaust Outlet Nut Strainer, Fuel Clamp Tube, Fuel Clamp Bolt Tank Asm, Fuel Nut, Flywheel Flywheel Subassembly Bolt Coil, Ignition Brake Asm. Bolt Bolt Rod, Governor Spring, Throttle Returning Control Asm, Throttle Bolt Support Sub., Governor Bolt, Governor Support Nut Spring, Governor Clip 1 1 1 1 1 1 2 1 1 1 1 1 1 2 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Record product’s Serial Number Here: Note: If product has no serial number, record month and year of purchase instead. Note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. Page 22 For technical questions, please call 1-888-866-5797. Item 69731 Assembly Diagram 67 67 SAFETY 67 65 66 68 68 93 99 69 64 94 98 97 20 20 21 19 15 16 91 22 23 24 25 17 15 13 92 SETUp 95 96 91 18 87 88 89 86 90 27 14 45 28 29 30 32 31 12 44 43 86 100 26 83 104 47 50 48 11 4 49 46 58 9 8 7 11 47 53 10 55 1 7 5 10 3 2 5 52 54 103 56 70 71 51 72 61 63 60 55 61 41 60 57 52 73 74 72 34 54 76 35 37 38 34 78 80 36 81 82 77 42 75 39 40 40 40 Item 69731 107 33 51 7 5 5 7 53 106 102 57 59 6 105 108 62 40 For technical questions, please call 1-888-866-5797. MAINTENANCE 85 OpERATION 101 84 79 79 40 40 Page 23 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. / 28mm
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