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Predator Engines 173cc Owner's Manual & Safety Instructions
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Predator Engines 173cc Owner's Manual & Safety Instructions

Predator Engines 173cc Owner's Manual & Safety Instructions

Vertical engine
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Owner's Manual & Safety Instructions
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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.
Vertical Engine
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.
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
2023 by Harbor Freight Tools
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.
Keep this manual for the safety warnings and precautions, assembly,
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
®
. All rights reserved.
173cc
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
24b
69731

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Summary of Contents for Predator Engines 173cc

  • Page 1 (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. 173cc Vertical Engine Using an engine indoors CAN KILL YOU IN MINUTES.

  • Page 2: Table Of Contents

    Run Time @ 50% Load 40 minutes with full tank Sound Level 104 dB Bore x Stroke 70 mm x 45 mm Displacement 173cc Compression Ratio 7.9:1 Rotation viewed from PTO Counterclockwise (power takeoff - the output shaft) 8" (203mm); 3/8"-24 UNF tapped hole;...

  • Page 3: Safety

    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. Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
  • Page 4 Set up Precautions 1. Gasoline fuel and fumes are flammable, and 4. Set up and use only on a flat, level, potentially explosive. Use proper fuel storage well-ventilated surface. and handling procedures. Do not store fuel 5. Wear ANSI-approved safety goggles, heavy-duty or other flammable materials nearby.
  • Page 5 20. Parts, especially exhaust system components, 26. When spills of fuel or oil occur, they must be get very hot during use. Stay clear of hot parts. cleaned up immediately. Dispose of fluids and cleaning materials as per any local, state, or 21.
  • Page 6 Engine Components Fuel Cap Priming Bulb Starter Handle Dipstick Muffler Filter Brake Throttle Serial Number Location (Write on front cover of manual.) Page 6 For technical questions, please call 1-888-866-5797. 69731...

  • Page 7: Set Up

    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. 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.
  • Page 8 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. NOTICE Warranty void if necessary adjustments are not made for high altitude use.
  • Page 9 Installation 1. IMPORTANT: If you have any doubts about your 6. Insert the mower’s brake cable sheath through the ability to perform the following procedures, have a hole in the Brake bracket. Secure the mower brake qualified service technician perform the installation. cable to the brake arm.

  • Page 10: Operation

    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. 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.
  • Page 11 Starting the Engine Before Starting the Engine: 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.
  • Page 12 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.

  • Page 13: Maintenance

    Maintenance WARNING 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.
  • Page 14 Checking and Filling Fuel Engine Oil Change WARNING! TO PREVENT SERIOUS CAUTION! Oil is very hot during operation and can INJURY FROM FIRE: cause burns. Wait for engine to cool before changing oil. Fill the fuel tank in a well-ventilated area 1.
  • Page 15 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: Spark To prevent injury from dust and debris, Plug wear ANSI-approved safety goggles, NIOSH-approved dust mask/respirator, and...
  • Page 16 Long-Term Storage When the equipment is to remain idle for longer than 20 b. Remove the drain bolt from the bottom of the days, prepare the Engine for storage as follows: carburetor bowl and allow the fuel to drain. c. After all fuel has drained, reinstall the 1.
  • Page 17 Troubleshooting Problem Possible Causes Probable Solutions Engine will not start FUEL RELATED: FUEL RELATED: 1. No fuel in tank or fuel valve closed. 1. Fill fuel tank with fresh 87+ octane stabilizer- treated unleaded gasoline and open fuel valve. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.).
  • Page 18 Problem Possible Causes Probable Solutions Engine misfires 1. Spark plug cap loose. 1. Check cap and wire connections. 2. Incorrect spark plug gap or 2. Re-gap or replace spark plug. damaged spark plug. 3. Defective spark plug cap. 3. Replace spark plug cap. 4.
  • Page 19 PLEASE READ THE FOLLOWING CAREFULLY 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.

  • Page 20: Warranties

    Warranties Limited 90 Day Warranty (Retail) 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.
  • Page 21 Emissions Control System Warranty In accordance with U.S. Environmental Protection Agency (EPA) regulations, Harbor Freight Tools (HFT) is pleased to explain the emissions control system warranty on your Model Year 2024 engine/equipment in addition to the Retail Warranty above. HFT warrants that the emissions control system on your engine is designed, built, and equipped so that it conforms to the United States Environmental Protections Agency’s (EPA) emissions requirements in effect at the time of manufacture.

  • Page 22: Parts Lists And Diagrams

    Parts Lists and Diagrams Parts List Part Description Part Description Part Description Cover, Cylinder Head Bolt Gasket, Carb. Insulator Gasket, Cylinder Head Plate, Governor Spindle Carburetor Asm. Head Sub., Cylinder Seal, Oil Gasket, Air Cleaner Gasket, Cylinder Head Bolt Valve, Enrichment Bolt Gear Asm, Governor Gasket, Air Cleaner...
  • Page 23 Assembly Diagram 88 89 29 30 70 71 79 79 69731 For technical questions, please call 1-888-866-5797. Page 23...
  • Page 24 Mounting Hole Diagram Note: Not to scale. 6*Ø0.35 in. / 9mm Ø8 in. / 203mm Ø0.24 in. / 6mm Ø0.34 in. / 8.7mm 1.1 in. / 28mm Ø1 in. / 25.4mm 0.98 in. / 25mm Ø0.24 in. / 6mm Ø0.34 in. / 8.7mm 3.94 in.