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Pacific hydrostar 66585 - User Manual

Pacific hydrostar 66585
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1” CLEAR
WATER PUMP
With 1.5 HP 2-Stroke Gas Engine
Model
66585
ASSEMBLY AND OPERATION INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright
©
2008 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.
For technical questions or replacement parts, please call 1-800-444-3353.
Manual Revised 10d
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.

Table of Contents

Questions and Answers

  • J
    James MaciasAug 5, 2025
    What to do if my Pacific hydrostar Water Pump has low pump output?
    • T
      Timothy RobertsonAug 6, 2025
      To resolve the issue of low pump output in your Pacific hydrostar Water Pump, check the suction hose for collapse, damage, excessive length, or insufficient diameter, and replace or adjust it as necessary. Inspect the connector for air leaks, replacing the coupling gasket or tightening the clamp. Clean the filter to remove any clogs. Lastly, examine the discharge hose for damage, excessive length, or insufficient diameter, and replace or adjust it accordingly.
  • Z
    Zachary Davis Jr.Aug 11, 2025
    What to do if Pacific hydrostar Water Pump engine stops suddenly?
    • E
      Erik ThomasAug 11, 2025
      If your Pacific hydrostar Water Pump engine stops suddenly, ensure the engine oil is filled to the correct level and use fresh 87+ octane unleaded fuel/oil mix. Inspect and replace the fuel tank cap if it's defective. Adjust the idle speed appropriately. If the issue persists, a qualified technician should diagnose and service the engine for potential problems like a faulty magneto, incorrect timing, or a clogged carburetor.
  • B
    brookeherreraAug 15, 2025
    Why does my Pacific hydrostar Water Pump engine backfire?
    • P
      Pamela MarshallAug 15, 2025
      To fix a Pacific hydrostar Water Pump engine that backfires, use fresh 87+ octane unleaded fuel/oil mix and consider cold weather fuel and oil additives. Ensure the choke is in the run position once the engine is warm. For high-altitude operation (above 5,000 feet), have a qualified technician adjust the engine. If problems continue, a technician should diagnose issues like a stuck intake valve or choke, incorrect timing, a clogged carburetor, or an overheated engine.
  • F
    Frank WalshAug 21, 2025
    What to do if my Pacific hydrostar Water Pump does not pump water?
    • S
      Shaun NguyenAug 21, 2025
      To address a Pacific hydrostar Water Pump that isn't pumping water, start by priming the pump. Then, inspect the filter for clogs and clean or replace it if damaged. Check for air leaks at the connector, replacing the coupling gasket or tightening the clamp as needed. Replace any leaking hoses and ensure the suction hose has a non-collapsible wall with a diameter of 1” or greater. Finally, adjust the suction lift.
  • J
    Jennifer HudsonAug 26, 2025
    Why is my Pacific hydrostar Water Pump engine knocking?
    • L
      Leslie NguyenAug 26, 2025
      If your Pacific hydrostar Water Pump engine knocks, use fresh 87+ octane unleaded fuel/oil mix and avoid exceeding the equipment's load rating. If the knocking persists, have a qualified technician diagnose and service the engine for potential issues such as incorrect spark timing, deposit buildup, or wear.
  • C
    Connie SmithOct 31, 2025
    How to start a Pacific hydrostar Water Pump when the engine won't start?
    • B
      Bruce MossOct 31, 2025
      To address an engine that won't start, consider these potential fuel-related issues: Ensure the fuel tank is adequately filled. If the engine is cold, position the choke for starting. Utilize fresh, high-quality 87+ octane unleaded fuel/oil mix. Prime the carburetor by pressing the priming bulb a specified number of times, if your equipment has one. Clear any obstructions in the fuel passageways with a fuel additive, addressing heavy deposits with thorough cleaning if needed. Gently tap the carburetor float chamber's side using a screwdriver handle. If there's excessive fuel, indicated by a fuel smell, set the choke to run, take out the spark plug, and pull the start handle a few times to ventilate the chamber before reinstalling the spark plug and returning the choke to the start position...

Summary

Assembly and Operation Instructions

DANGER: Carbon Monoxide Hazard

Critical safety warning about carbon monoxide poisoning from engine exhaust.

Specifications

Engine Specifications

Details about the engine, including HP, stroke, displacement, and fuel type.

Included Accessories

List of accessories included with the water pump for setup and use.

Important Safety Information

Set Up Precautions

Precautions to take before and during the setup of the equipment.

Operating Precautions

Carbon Monoxide Hazard

Warning about carbon monoxide poisoning when using the engine indoors.

General Operating Safety

Keep children away, do not leave unattended, wear PPE, and be aware of surroundings.

Service Precautions

Service Preparation and Safety

Steps and precautions for safe and proper maintenance and repair of the unit.

Maintenance and Part Integrity

Ensure safety guards are in place and use qualified personnel for service with genuine parts.

Unpacking and Controls

Unpacking and Parts Verification

Verify all parts are included during unpacking; contact for missing items.

Component Identification Overview

Visual identification of key components like ports, caps, and switches.

Connecting Hoses

Suction Hose Assembly

Connect hose coupler, gasket, and hose coupling for suction hose to intake port.

Discharge Hose Assembly

Connect hose coupler and gasket to the discharge hose coupling to discharge port.

Hose Clamp Warning

Caution against over-tightening hose clamps to prevent hose damage.

Locating and Setting Up the Pump

Optimal Pump Placement and Hose Routing

Position pump near water, use short hoses, and secure them for efficient operation.

Pump Operation Troubleshooting

Addresses issues like Cavitation and Water Hammer during pump operation.

Engine Pre-Start and Operation

Pre-Start Checks and Fueling

Disconnect spark plug, mix fuel/oil correctly, and prime pump housing before starting.

Starting and Stopping Engine

Procedures for starting the engine using choke/throttle and stopping it with the kill switch.

Inspection, Maintenance, and Cleaning

Pre-Use Inspection and Safety

Inspect pump/engine for issues before use; follow safety steps during maintenance.

Engine Maintenance Schedule

Follow intervals for oil changes, filter replacement, spark plug, and carburetor cleaning.

Water Pump Maintenance

Check intake filter for debris and ensure pump housing has water before each use.

Storage Procedures

Storage Preparation Steps

Cool engine, clean unit, prepare fuel, empty primer tank, and protect metal parts.

Long-Term Storage Guidelines

Store in a dry, safe location; be aware of fuel deterioration after storage.

Service and Repair Policy

Unauthorized Service Prohibition

All unspecified maintenance/repairs must be done by a qualified technician.

Troubleshooting Engine Issues

Engine Not Starting Causes

Addresses fuel, ignition, and compression related issues preventing engine start.

Engine Misfire Causes

Covers causes and solutions for the engine misfiring during operation.

Diagnosis and Servicing Safety

Always follow safety precautions during diagnosis and servicing.

Troubleshooting Pump and Engine Problems

Engine Stopping and Knocking

Addresses causes for sudden engine stops, knocking sounds, and backfiring.

Pump Water Flow Issues

Solutions for pump not pumping water or having low output.

Water Pump Parts and Assembly

Water Pump Component Identification

Visual identification of water pump parts and their assembly points.

Engine Parts List

Engine Component Identification

Visual identification of engine parts and their assembly points.

Engine Assembly Diagram

Engine Assembly Overview

Diagram showing the assembly of various engine components.

Limited Warranty Information

Warranty Claim and Responsibilities

How to claim warranty service and owner's responsibilities for maintenance.

Emission Control System Warranty

Warranty statement specific to the engine's emission control system.

Emission Control Warranty Provisions

Warranty Coverage Details

Details on coverage length, exclusions, and no-charge repair for warranted parts.

Warranted Parts Identification

Lists specific engine parts covered under the emission control warranty.

Pacific hydrostar 66585 Specifications

General IconGeneral
BrandPacific hydrostar
Model66585
CategoryWater Pump
LanguageEnglish

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