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Predator 68525 - User Manual

Predator 68525
24 pages
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Email our Engine support at: predator@harborfreight.com
14j
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.
Owners 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 a generator indoors CAN
KILL YOU IN MINUTES.
Generator 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.
When unpacking, make sure that the product is intact and undamaged.
If any generator parts are missing or broken, please call 1‑888‑866‑5797
as soon as possible.
If any
engine
parts are missing or broken,
please call 1‑800‑520‑0882 as soon as possible.
Copyright
©
2011 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.

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Questions and Answers

  • C
    Clifford WallaceAug 21, 2025
    What to do if my Predator Portable Generator engine misfires?
    • V
      Victoria ParkAug 21, 2025
      If your Predator Portable Generator engine misfires, try these potential solutions: * Check the wire connections. * Re-gap or replace the spark plug. * Replace the spark plug cap. * Ensure you are using fresh 87+ octane unleaded gasoline, and that it doesn't contain more than 10% ethanol. * Diagnose and repair the compression using the 'Engine will not start: COMPRESSION RELATED' section.
  • A
    andersontiffanyAug 25, 2025
    Why does my Predator Portable Generator engine stop suddenly?
    • S
      stephanie36Aug 25, 2025
      If your Predator Portable Generator engine stops suddenly, consider the following: * Ensure the engine oil is filled to the proper level, checking it before each use. * Fill the fuel tank with fresh 87+ octane unleaded gasoline, avoiding fuel with more than 10% ethanol. * Test or replace the fuel tank cap. * Have a qualified technician service the magneto. * Secure the spark plug cap.
  • R
    Robert MarshallAug 26, 2025
    What causes a Predator 68525 engine to knock?
    • J
      Joseph BruceAug 26, 2025
      If your Predator Portable Generator engine knocks, try these solutions: * Fill the fuel tank with fresh 87+ octane unleaded gasoline, ensuring it contains no more than 10% ethanol. * Avoid exceeding the equipment’s load rating. * Have a qualified technician diagnose and service the engine.
  • V
    vjamesAug 28, 2025
    Why is my Predator 68525 Portable Generator engine backfiring?
    • H
      Heather Martin MDAug 28, 2025
      If your Predator Portable Generator engine backfires, here are some potential solutions: * Fill the fuel tank with fresh 87+ octane unleaded gasoline, ensuring it contains no more than 10% ethanol. * Use cold weather fuel and oil additives to prevent backfiring. * Have a qualified technician diagnose and service the engine. * Check the engine timing.
  • J
    Johnathan PageAug 30, 2025
    What to do if Predator 68525 engine stops when under heavy load?
    • M
      Meredith WrightAug 30, 2025
      If your Predator Portable Generator engine stops when under a heavy load: * Clean or replace the element. * Allow the engine to warm up before operating the equipment.
  • J
    johnsonericSep 1, 2025
    What to do if Predator 68525 doesn’t have power?
    • R
      Rhonda DorseySep 1, 2025
      If your Predator product doesn’t have power: * Turn off and unplug the product, then plug it back in again and turn it on. * Turn off and unplug the product, reset the circuit breaker, then plug the product in and turn it on. * Have the product repaired.
  • M
    Michael HunterSep 3, 2025
    What to do if Predator 68525 Portable Generator begins to operate abnormally?
    • S
      Scott RiosSep 3, 2025
      If your Predator product begins to operate abnormally: * Immediately unplug the appliance and have it repaired by a qualified technician, or replace the appliance. * Lower the number of items plugged into the generator to stay within the rated capacity, or use a more powerful generator.
  • L
    Lisa HernandezSep 5, 2025
    Why is my Predator 68525 engine knocking?
    • S
      suzannemitchellSep 5, 2025
      If your Predator Portable Generator engine knocks, the possible cause is old or low-quality gasoline. Fill the fuel tank with fresh 87+ octane unleaded gasoline, ensuring it has no more than 10% ethanol. Another cause may be that the engine is overloaded, so avoid exceeding the equipment’s load rating.
  • A
    Angela FloydSep 7, 2025
    What to do if my Predator 68525 doesn’t have power?
    • D
      Dr. Gabriel PetersSep 7, 2025
      If your Predator Portable Generator is not providing power, first ensure the product is properly plugged in. If it is, check the circuit breaker and reset it if it has tripped. If the issue persists, the product may need repair.
  • S
    Shawn MyersSep 10, 2025
    Why is my Predator 68525 engine misfiring?
    • N
      Nancy SheltonSep 10, 2025
      If your Predator Portable Generator engine misfires, start by checking the wire connections on the spark plug cap. Then, inspect the spark plug for damage or incorrect gap and re-gap or replace it as needed. Also, ensure you are using fresh 87+ octane unleaded gasoline with no more than 10% ethanol.

Summary

Owners Manual & Safety Instructions

Save This Manual

Keep this manual for safety warnings, precautions, assembly, operating, inspection, maintenance, and cleaning procedures.

Carbon Monoxide Hazard Warning

Generator exhaust contains carbon monoxide, a poison you cannot see or smell. Use only outdoors.

Important Safety Instructions

Warning Symbols and Definitions

Explains hazard symbols like DANGER, WARNING, CAUTION, and NOTICE.

General Setup Precautions

Basic safety measures for setting up the generator, including fuel, fire extinguishers, and ventilation.

Operation and Setup Safety

Carbon Monoxide Hazard in Operation

Never use generator indoors. Keep outdoors and away from openings to prevent CO buildup.

Safe Operating Precautions

Guidelines for safe operation, including grounding, load limits, and handling hot parts.

Operational Safety Guidelines

Electrical Safety and Connections

Proper connection of generator to loads and electrical systems, insulation, and grounding.

Personal Protection and Environmental Warnings

Recommendations for safety gear, clothing, and awareness of California Proposition 65.

Service and Refueling Procedures

Service Precautions

Steps before maintenance: unplugging, cooling, and using qualified personnel.

Refueling Guidelines

Safe practices for refueling, including ventilation, no smoking, and spill cleanup.

Generator Overview and Specifications

Technical Specifications

Detailed specifications including output, engine type, fuel capacity, and dimensions.

Components and Controls

Diagram and identification of the generator's main parts and control interfaces.

Generator Controls and Features

Control Panel Functions

Descriptions of engine switch, circuit breakers, and receptacles.

Receptacles and Grounding Terminal

Details on AC/DC receptacles and the grounding terminal for safety.

Initial Setup and Grounding

Pre-Assembly Safety and Setup Notes

Important information before assembly, including safety warnings and altitude notes.

Battery and Grounding Installation

Step-by-step instructions for installing the battery and grounding the generator.

High Altitude Operation

Altitude Adjustment and Warranty

Impact of high altitude on engine performance and potential warranty voidance.

Altitude Kit Installation Procedure

Instructions for installing specific kits for high-altitude operation.

Operating Procedures: Pre-Start Checks

Generator Pre-Start Checklist

Essential checks for engine, oil, and fuel before starting.

Engine Oil and Fuel Management

Procedures for checking and filling engine oil and fuel.

Generator Usage and Break-in

Starting the Generator Engine

Basic procedure for starting the engine and allowing it to warm up.

Engine Break-in Period

Guidelines for the initial usage period to ensure engine longevity.

Starting the Generator Engine

Manual Start Procedure

Step-by-step guide for starting the engine manually.

Electric Start Procedure

Step-by-step guide for starting the engine electrically.

Connecting Electrical Loads

Wattage Calculation and Load Management

Planning loads to avoid overload using charts and tables.

Connecting Devices Safely

Sequence and warnings for connecting appliances to the generator.

Generator Shutdown Procedures

Emergency Engine Stop

Immediate shutdown procedure in critical situations.

Normal Engine Shutdown

Standard procedure for stopping the engine under normal conditions.

Maintenance and Lubrication

User-Maintenance Guidelines

General advice and precautions for user-performed maintenance.

Maintenance Schedule and Procedures

Specific tasks and recommended frequencies for upkeep.

Engine Maintenance Tasks

Fuel and Oil Management

Procedures for checking and changing engine oil and managing fuel.

Air Filter Element Maintenance

Cleaning and replacement of the air filter for optimal performance.

Engine Servicing and Storage

Spark Plug Maintenance

Inspection, cleaning, and replacement of spark plugs for engine health.

Preparing for Generator Storage

Steps for long-term engine and unit storage to prevent damage.

Troubleshooting Engine Issues

Engine Will Not Start: Fuel & Ignition

Common causes and solutions for starting failures related to fuel and ignition systems.

Engine Will Not Start: Compression

Troubleshooting compression-related starting problems and potential causes.

Troubleshooting Performance Problems

Engine Misfires and Stoppages

Diagnosing issues affecting engine running, such as misfires or sudden stops.

Power Output and Abnormal Operation

Addressing problems with power delivery, overload, or abnormal product operation.

Parts List

Component Identification

Detailed list of all generator parts with part numbers.

Assembly Diagram

Visual Part Locator

Diagram showing the location and numbering of all generator parts.

Warranty Information

Limited 90 Day Warranty

General terms and conditions of the limited warranty for the product.

Emission Control System Warranty

Specific warranty coverage for engine emission control components.

Warranty Provisions and Exclusions

Detailed terms, exclusions, and owner responsibilities for warranty claims.

Predator 68525 Specifications

General IconGeneral
BrandPredator
Model68525
CategoryPortable Generator
LanguageEnglish

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