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Pacific hydrostar 66585 Assembly And Operation Instructions Manual

Made by: Pacific hydrostar
Type: Assembly And Operation Instructions
Category: Water Pump
Pages: 18
Size: 0.82 MB

 

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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.

 


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Page 2

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

SPECiFiCATiOnS

Suction Port Diameter

1” TPI

Discharge Port Diameter 1” TPI
Maximum Suction Head 19-1/2 ft.
Total Head

59 ft.

Maximum Discharge 

Flow

31 GPM

Pump Type

Centrifugal / Self-Priming*

Engine Specifications

1.5 HP / 2-Stroke / Recoil Start / 

Displacement: 52cc

Rotation: Counterclockwise 

(from shaft side)

Unleaded Fuel: Min. 87 Octane

Fuel Tank Capacity: .31 Gal.  

(40 oz.) 

1-1/2 operating hours at half 

loading (full tank)

Included 

Accessories

Plastic Basket Filter 

Hose Coupling  

Hose Adapters / Barbed Fittings 

/ Gasket / Wire Clamps

 

* The Water Pump is self-priming. However, for the initial use 

   the Pump Housing must be filled with water (see page 9).

 

nOTE:

 

This

 two cycle engine is fueled by a 

25:1 ratio of 87+ octane unleaded fuel and a 

two-stroke engine oil (10 oz. of oil).

iMPORTAnT! 

THiS PUMP iS FOR CLEAR WATER 

USE OnLy. Clear water is water that contains 

little to no solids.

iMPORTAnT! 

This product requires oil and fuel 

to be added before starting.  Attempting to 

start the Engine without oil WiLL ruin the 

Engine and void the warranty.

The Emission Control System for 

this Water Pump’s Engine is warranted for 

standards set by the U.S. Environmental 

Protection Agency.  For warranty information, 

refer to the last two pages of this manual.

nOTE:

 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.

SAVE THiS MAnUAL

You will need this manual for safety 

warnings and precautions, assembly, 

operating, inspection, maintenance and 

cleaning procedures, parts list and assembly 

diagram.  Keep invoice with manual.  Write 

invoice number on inside of front cover.  Write 

product’s serial number in back of manual 

near assembly diagram, or write month and 

year of purchase if product has no number.  

Keep manual and invoice in a safe and dry 

place for future reference.

Pump Applications

Clear Water **

Slimy Water

Muck Water

Silt Water

High Solid Content

N/A

Slow Seepage

N/A

Fast Seepage

Manholes

N/A

Cofferdams

N/A

Quarries

N/A

Septic Tanks

N/A

Deep Piling

N/A

Industrial/ Agricultural Chemicals

N/A

This Water Pump can be used to supply water to:

Mixer or Paver

N/A

Concrete Curing

N/A

Water Wagons **

N/A

Sprinklers or Nozzle

N/A

** Non Potable Only 

N/A = Not Applicable

REV 10d

 


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Page 3

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

iMPORTAnT SAFETy 

inFORMATiOn

in this manual, on the labeling, and 

all other information provided with 

this product:

  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.

 

dAnGER indicates a 

hazardous situation 

which, if not avoided, will result 

in death or serious injury.
 

WARninG indicates a 

hazardous situation 

which, if not avoided, could 

result in death or serious injury.
 

CAUTiOn, used with 

the safety alert 

symbol, indicates a hazardous 

situation which, if not avoided, 

could result in minor or moderate 

injury.
 

nOTiCE is used to 

address practices not 

related to personal injury.
 

CAUTiOn, without the 

safety alert symbol, is 

used to address practices not 

related to personal injury.

 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.

SAVE THESE inSTRUCTiOnS

SET UP PRECAUTiOnS

Fuel and fumes are flammable, and 

1. 

potentially explosive.  Use proper fuel 

storage and handling procedures.  

Do not store fuel or other flammable 

materials nearby.

Have multiple ABC class fire 

2. 

extinguishers nearby.
Operation of this equipment may create 

3. 

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.
Set up and use only on a flat, level, well-

4. 

ventilated surface.
Wear ANSI-approved safety goggles, 

5. 

heavy-duty work gloves, and dust mask/

respirator during set up.
Use only oil and fuel recommended 

6. 

in the “Specifications” section of this 

manual.
Do not use fuel/oil mix containing more 

7. 

than 10% ethanol (E10).  Do not use E85 

ethanol.

 


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Page 4

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

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.
Keep children away from the equipment, 

2. 

especially while it is operating.
Do not leave the equipment unattended 

3. 

when it is running.  Turn off the 

equipment (and remove safety keys, if 

available) before leaving the work area.
Wear ANSI-approved safety goggles and 

4. 

hearing protection during use.
People with pacemakers should 

5. 

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.
Use only accessories that are 

6. 

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.
Do not operate in explosive 

7. 

atmospheres, such as in the presence of 

flammable liquids, gases, or dust.  Fuel-

powered engines may ignite the dust or 

fumes.
Stay alert, watch what you are doing 

8. 

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.
Do not overreach.  Keep proper footing 

9. 

and balance at all times.  This enables 

better control of the equipment in 

unexpected situations.
Dress properly.  Do not wear loose 

10. 

clothing or jewelry.  Keep hair, clothing 

and gloves away from moving parts.  

Loose clothes, jewelry or long hair can 

be caught in moving parts.
Parts, especially exhaust system 

11. 

components, get very hot during use.  

Stay clear of hot parts.
Do not cover the engine or equipment 

12. 

during operation.
Keep the equipment, engine, and 

13. 

surrounding area clean at all times.
Use the equipment, accessories, etc., in 

14. 

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.
Do not operate the equipment with 

15. 

known leaks in the engine’s fuel system.

 


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Page 5

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

WARNING:  The brass components of 

16. 

this product contain lead, a chemical 

known to the State of California to cause 

birth defects (or other reproductive 

harm). (California Health & Safety code § 

25249.5, 

et seq.

)

This product contains or, when used, 

17. 

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.

)

When spills of fuel or oil occur, they must 

18. 

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.
Keep hands and feet away from moving 

19. 

parts.  Do not reach over or across 

equipment while operating.
Before use, check for misalignment 

20. 

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.
Use the correct equipment for the 

21. 

application.  Do not modify the 

equipment and do not use the equipment 

for a purpose for which it is not intended.
Industrial applications must follow OSHA 

22. 

guidelines.

SERViCE PRECAUTiOnS

before service, maintenance, or 

1. 

cleaning:

Turn the Power Switch (40) to its 

a. 

“OFF” position.
Allow the engine to completely cool.

b. 

Then, remove the spark plug wire(s) 

c. 

from the spark plug(s).

Keep all safety guards in place and in 

2. 

proper working order.  Safety guards 

include muffler, air cleaner, mechanical 

guards, and heat shields, among other 

guards.

do not alter or adjust any part of the 

3. 

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.

Wear ANSI-approved safety goggles, 

4. 

heavy-duty work gloves, and dust mask/

respirator during service.
Maintain labels and nameplates on 

5. 

the equipment.  These carry important 

information.  If unreadable or missing, 

contact Harbor Freight Tools for a 

replacement.
Have the equipment serviced by a 

6. 

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.
Store equipment out of the reach of 

7. 

children.
Follow scheduled engine and equipment 

8. 

maintenance.

 


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Page 6

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

Refueling Precautions:

9. 

Do not smoke, or allow sparks, flames, 

a. 

or other sources of ignition around the 

equipment, especially when refuelling.

Do not refill the fuel tank while the 

b. 

engine is running or hot.

Do not fill fuel tank to the top.  Leave 

c. 

a little room for the fuel to expand as 

needed.
Refuel in a well-ventilated area only.

d. 

 

SAVE THESE  

  inSTRUCTiOnS

.

UnPACKinG

When unpacking, check to make sure 

all of the parts shown on the Parts List in 

this manual are included.

  If any parts are 

missing or broken, please call Harbor Freight 

Tools at the number shown on the cover (and 

at the bottom of each page) of this manual as 

soon as possible.

COnTROLS And FEATURES

dRAin PLUG (38A)

STARTER 

HAndLE (7)

inTAKE PORT (19A)

FUEL TAnK CAP (94)

FUEL TAnK (89)

FRAME (26A)

Figure 1

COUPLinG 

GASKET 

(17A)

PRiMinG PLUG (14A)

diSCHARGE PORT (18A)

EnGinE 

KiLL 

SWiTCH 

(40)

HOSE 

COUPLinG 

(16A)

inTAKE 

FiLTER 

(25A)

inTAKE 

FiLTER 

COVER (39A)

HOSE 

CLAMPS 

(24A)

SPARK PLUG 

CAP (54)

THROTTLE 

(96)

CHOKE (76)

HOSE COUPLER (15A) 

(Suction Hose Connection)

HOSE COUPLER (15A) 

(discharge Hose Connection)

 


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Page 7

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

COnnECTinG HOSES

The Suction Hose (not included) 

MUST be reinforced with braided material 

or have non-collapsible construction

.  Do 

not use Hose with inside diameter smaller 

than 1” (pump’s Intake Port (19A) diameter).

Slide Hose Coupler (15A) over Hose 

1. 

Coupling (16A).  Insert Coupling Gasket 

(17A) into end of Hose Coupler.   See 

Figure 2, below. 

 

 

 

 

 

 

 

Screw Hose Coupler (15A) clockwise 

2. 

onto Intake Port (19A) until fastened 

securely.  See Figure 3, below. 

 

 

 

 

 

 

 

Slide Hose Clamp (24A) over end of 

3. 

Suction Hose (not included).  Slide Hose 

onto Hose Coupling.  Use a screwdriver 

(not included) to tighten Hose Clamp 

until secure.  See Figure 4, below. 

 

 

 

 

 

 

 

 

Slide second Hose Clamp over other end 

4. 

of Suction Hose.  Attach Hose to Intake 

Filter Cover (39A).  Use screwdriver to 

tighten Clamp until secure. See Figure 5. 

 

 

 

 

 

 

For the Discharge Hose (not included), 

5. 

slide the other Hose Coupler (15A) over 

the other Hose Coupling (16A).  Insert 

the other Coupling Gasket (17A) into the 

end of Hose Coupler. See Figure 2.
Thread the Hose Coupler clockwise onto 

6. 

Discharge Port (18A) until tightened 

securely.
Slide other Hose Clamp over end 

7. 

of Discharge Hose and then slide 

Discharge Hose onto Hose Coupling.  

Use a screwdriver to tighten Hose Clamp 

until secure. See Figure 6. 

 

 

 

 

 

 

 

 

WARninG!

8. 

 Do not over-tighten Hose 

Clamps as the clamp may damage the 

hose. 

 

 

 

Figure 2

HOSE COUPLER (15A)

HOSE COUPLinG (16A)

COUPLinG  

GASKET (17A)

inTAKE PORT

(19A)

HOSE  

COUPLER  

(15A)

Figure 3

HOSE COUPLER  

(15A)

HOSE CLAMP  

(24A)

SUCTiOn HOSE 

(not  included)

Figure 4

HOSE CLAMP  

(24A)

SUCTiOn  

HOSE  

  

inTAKE 

FiLTER 

(25A)

Figure 5

HOSE CLAMP  

(24A)

diSCHARGE 

HOSE 

(not  included)

HOSE COUPLER  

(15A)

diSCHARGE 

PORT

(18A)

Figure 6

inTAKE FiLTER 

COVER (39A)

 


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Page 8

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

LOCATinG THE WATER PUMP

Make sure the Water Pump is located 

1. 

on a flat, level, sturdy surface capable of 

supporting the weight of the Pump and 

any additional tools and equipment.
For best Pump performance, place the 

2. 

Pump near the water level and use 

hoses that are no longer than necessary.  

That will allow the Pump to produce the 

greatest output with the least self-priming 

time.  See diagram below. 

 

 

 

 

 

 

 

 

 

 

 

 

 

As the head (pumping height) increases, 

pump output decreases.  The length, 

type, and size of the suction and 

discharge hoses can also significantly 

affect Pump output. 

 

Discharge head capability is always 

greater than suction head capability.  

Which means pumping height for the 

Intake Hose (suction head) should be 

shorter than the pumping height for the 

Discharge Hose. 

 

Minimizing suction head (placing the 

Pump closer to the water level) will also 

help reduce self-priming time.  This is the 

time it takes the Pump to bring the water 

from the water level to the Pump during 

the initial operation. 

Route the Intake Hose with the Intake 

3. 

Filter fully immersed in the water supply 

source.  
Place Filter into water  to be pumped. 

4. 

WARninG! Filter must be fully 

immersed in water. 

 Do not operate 

Pump without Filter connected to end 

of suction hose. Keep Filter out of sand 

or silt by placing Filter in bucket or on 

stones.  See diagram below. 

 

 

 

 

 

 

 

 

 

Secure the Intake Hose in place to keep 

5. 

it from moving once the Pump is turned 

on.  The Intake Hose should be as short 

as possible for more efficient operation.

Route the discharge hose to the desired 

6. 

discharge location.  If necessary, connect 

additional discharge hoses to direct the 

discharge to the desired location.  Then 

make sure to secure the discharge hose 

in place to keep it from moving once the 

Water Pump is turned on.  The discharge 

hose should be kept as short as possible 

for more efficient operation.

CAUTiOn! 

7. 

Be aware of the following 

problems during operation, and how to 

fix them:

 

 

1. Cavitation:

 This is the sudden 

formation and collapse of low-pressure 

vapor (bubbles) across the vanes of the 

impeller.  

 

Cause: 

When the surface pressure 

on a liquid becomes low enough, the 

Total Head

Suction  

Head

Water Pump

discharge Head

Filter

 


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Page 9

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

liquid will begin to boil (even at room 

temperature). With centrifugal pumps, 

cavitation can occur when the suction 

vacuum becomes too great, allowing 

water vapor or bubbles to form at the 

impeller. The rapid pressure increase 

can cause impeller damage.  

 

Solution:

 Minimizing suction head and 

using the largest practical suction hose 

diameter will reduce the likelihood of 

cavitation. 

do not use a suction hose 

with a diameter smaller than the 

Pump’s intake Port (2” diameter). 

 

2. Water Hammer Pressure: 

This is 

energy sent back to the Pump due to 

sudden stoppage of water flowing from 

the Pump. 

 

Cause: 

Water hammer pressure is more 

likely to occur when using a very long 

discharge hose. If the flow of water at 

the end of the discharge hose is shut 

off suddenly, energy is sent back to the 

pump. This causes a large pressure 

spike in the Pump housing, leading to 

potential damage to the Pump casing.  

 

Solution:

 Use as short a discharge hose 

as possible or shut off water flow slowly. 

EnGinE PRE-START inSTRUCTiOnS

Disconnect the Spark Plug Cap (54) from 

1. 

the Engine.

iMPORTAnT!  your Warranty is voided 

2. 

if you do not properly mix the fuel and 

oil before fueling engine.  never run 

the Engine with improper Engine oil 

to fuel mixture.  Running the Engine 

with low or no oil will permanently 

damage the Engine.

To fill the Fuel Tank (89), unscrew and 

3. 

remove the Fuel Tank Cap (94).  Fill the 

Fuel Tank with a 25:1 ratio of 

mid-to-

high (minimum 87 octane) unleaded 

fuel and 2 stroke engine oil (10 oz of 

oil)

.  Then replace the Fuel Tank Cap.  

Thereafter, check the Fuel Tank Gauge 

for the amount of unleaded fuel-oil 

mixture.  When necessary, refill the Fuel 

Tank.
Before every use, the pump housing 

4. 

must be filled with water.  Unscrew 

Priming Plug and add water to the Pump 

Housing.

iMPORTAnT!  

Check for water in the Pump 

Housing before each use.  Never attempt 

to run the Water Pump without water 

inside the Pump Housing.  

Running 

the Water Pump without water will 

damage the Water Pump Gaskets and 

void the Warranty.  

TO START And STOP THE EnGinE

Re-connect the Spark Plug Cap to the 

1. 

Spark Plug (51) of  the Engine.
Turn Engine’s Choke (76) to its 

2. 

“CHOKE”

 position, to far right.

nOTE:  

3. 

No choke is required if the 

Engine is warm.  Make sure the Choke 

is in the 

“RUn” 

position when starting a 

warm Engine.  
Turn the Engine’s Throttle (96) to its 

4. 

“FAST”

 position (to the left.) 

Grasp the Starter Handle (7), and pull 

5. 

slowly until resistance is felt.  Allow the 

Starter rope to rewind slowly.  Then 

pull the Starter Handle with a rapid, full 

arm stroke.  Allow the Starter rope to 

rewind slowly.  If necessary, repeat this 

procedure until the Engine starts.   

 

 


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Page 10

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

Once the Engine starts, slowly move 

6. 

the Engine Choke to its 

“RUn” 

position.  

Then adjust the Engine Throttle to the 

speed (RPM) you desire.  
Once the Engine starts, the Water Pump 

7. 

will run continuously until the Engine is 

turned off.  To turn off the Engine, press 

the Engine Kill Switch (40).  
Allow the Water Pump and its Engine to 

8. 

completely cool before moving or storing 

the Pump.

inSPECTiOn, MAinTEnAnCE, And 

CLEAninG

 

TO PREVEnT 

SERiOUS injURy 

FROM ACCidEnTAL STARTinG: 

Turn the Power Switch of the 

equipment to its “OFF” position, 

wait for the engine to cool, and 

disconnect the spark plug wire(s) 

before assembling or making any 

adjustments to the equipment.

before each use, 

inspect the general 

condition of the Water Pump and 

its Engine.  Check for loose parts, 

misalignment or binding of moving parts, 

damaged parts, loose hose connections, 

and any other condition that may affect 

the safe operation of the Water Pump.  If 

abnormal noise or vibration occurs, have 

the problem corrected before further use.  

do not use damaged equipment.

EnGinE MAinTEnAnCE

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:

  These procedures are in addition to 

the regular checks and maintenance 

explained as part of the regular operation 

of the engine and equipment.

After initial 20 Operation Hour Period:

Change engine oil.

a. 

Every 25 Operation Hours Thereafter:

Clean/replace air filter element.

a. 

Replace spark plug.

b. 

Every 50 Operation Hours:

Change engine oil.

a. 

Replace fuel filter (if equipped).

b. 

Every 100 Operation Hours:

Replace air filter element.

a. 

note:

  All maintenance procedures scheduled 

for 25, 50, and 100 operation hours 

should be performed at least yearly.

Every 300 Operation Hours:

Clean fuel tank and carburetor.

a. 

Clean carbon build-up from combustion 

b. 

chamber.

WATER PUMP MAinTEnAnCE

Before each use, check the Intake Filter 

1. 

for accumulated debris, rocks, and other 

objects that may clog the Filter.
Before each use, check to make sure 

2. 

there is water in the Water Pump 

Housing.  If there is not enough water, 

unscrew the Priming Cap and add water 

to the Pump Housing. 
If the Water Pump is not in use due to 

3. 

dry conditions, etc., prime the Water 

 


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Page 11

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SKU 66585 

        

Pump Housing and activate the unit once 

every three months.
In cold weather, when the Water Pump 

4. 

is not in use, protect the interior of 

the Pump from freezing by draining 

any remaining water from the Pump 

Housing and pumping a permanent type 

automotive anti-freeze containing a rust 

inhibitor through the system.  Flush the 

system with a neutralizing liquid prior to 

re-use of the unit.
To clean the Water Pump, use a garden 

5. 

hose and a mild detergent.  Avoid 

introducing water into the interior parts of 

the Engine.
When storing the Water Pump, make 

6. 

sure to store the unit in a clean, dry, safe 

location out of reach of children and 

other unauthorized people.

CAUTiOn!  All maintenance, service, or 

repairs not mentioned in this manual 

must only be performed by a qualified 

service technician.

Storage

Wait for engine to cool, then clean 

1. 

engine with clean cloth.
When the equipment is to remain idle for 

2. 

longer than 20 days, prepare the engine 

for storage as follows:

Either leave fuel tank empty or refill fuel 

a. 

tank with fresh unleaded fuel/oil mix and 

fuel stabilizer intended for long term 

engine storage (not included).  After 

filling, run engine for about 5 minutes to 

circulate the treated fuel/oil mix through 

the carburetor.  Wait for engine to cool 

before proceeding.
Disconnect battery cables (if equipped).

b. 

Empty the primer tank of all water.

3. 

Apply a thin coat of rust preventive oil to 

4. 

all uncoated metal parts.
Cover and store in a dry, well-ventilated 

5. 

area out of reach of children.
Before starting the engine after storage, 

6. 

keep in mind that untreated fuel will 

deteriorate quickly.  Drain the fuel 

tank and filter, and change to fresh 

fuel if untreated fuel has been sitting 

for a month, if treated fuel has been 

sitting beyond the fuel stabilizer’s 

recommended time period, or if the 

engine does not start properly.

 


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SKU 66585 

        

Troubleshooting

Problem

Possible Causes

Probable Solutions

Engine will not 

start

FUEL RELATED:

No fuel in tank.

1. 

Choke not in start position, especially 

2. 

with cold engine.
Low quality or deteriorated, old fuel/oil 

3. 

mix.
Carburetor not primed. 

4. 

Dirty fuel passageways blocking fuel 

5. 

flow.

 

Carburetor needle stuck. Fuel can be 

6. 

smelled in the air.
Too much fuel in chamber. This can 

7. 

be caused by the carburetor needle 

sticking.

FUEL RELATED:

Fill fuel tank.

1. 

Move choke to start position if engine is 

2. 

cold.
Use only fresh 87+ octane unleaded fuel/

3. 

oil mix.
Prime carburetor by pressing priming bulb 

4. 

specified number of times (if equipped).

Clean out passageways using fuel additive.  

5. 

Heavy deposits may require further 

cleaning.

Gently

6. 

 tap side of carburetor float chamber 

with screwdriver handle.
Turn choke to run position.  Remove spark 

7. 

plug and pull the start handle several times 

to air out the chamber.  Reinstall spark plug 

and set choke to start position.

IGNITION (SPARK) RELATED:

Spark plug wire not connected securely.

1. 

Spark plug electrode wet or dirty.

2. 

Incorrect spark plug gap.

3. 

Spark plug wire or spark plug broken.

4. 

Incorrect spark timing or faulty ignition 

5. 

system.

IGNITION (SPARK) RELATED:

Connect spark plug wire properly.

1. 

Clean spark plug.

2. 

Correct spark plug gap.

3. 

Replace spark plug wire and/or spark plug.

4. 

Have qualified technician diagnose/repair 

5. 

ignition system.

COMPRESSION RELATED:

Cylinder not lubricated.  Results in 

1. 

problem after long storage periods. 

Loose or broken spark plug.  (Hissing 

2. 

noise will occur when trying to start.) 

Loose cylinder head or damaged head 

3. 

gasket.  (Hissing noise will occur when 

trying to start.)
Engine valves or tappets mis-adjusted or 

4. 

stuck.

COMPRESSION RELATED:

Pour tablespoon of oil into spark plug hole.  

1. 

Crank engine a few times and try to start 

again.
Tighten spark plug.  If that does not work, 

2. 

replace spark plug.  If problem persists, 

may have head gasket problem, see #3.
Tighten head.  If that does not remedy 

3. 

problem, replace head gasket. 

Adjust valve clearance.  If that does not 

4. 

work, clean or replace valves/tappets.

Engine misfires

Spark plug wire loose.

1. 

Incorrect spark plug gap or damaged 

2. 

spark plug.
Defective spark plug wire.

3. 

Old or low quality fuel/oil mix. 

4. 

Incorrect compression.

5. 

Check wire connections.

1. 

Re-gap or replace spark plug. 

2. 

Replace spark plug wire.

3. 

Fill fuel tank with  fresh 87+ octane 

4. 

unleaded fuel/oil mix.
Diagnose and repair compression. (Use 

5. 

Engine will not start: COMPRESSiOn 

RELATEd

 section.)

Follow all safety precautions whenever diagnosing or servicing the 

equipment or engine.

 


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Page 13

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

Troubleshooting

Problem

Possible Causes

Probable Solutions

Engine stops 

suddenly

Low oil shutdown. 

1. 

Fuel tank empty or full of impure or low 

2. 

quality fuel/oil mix.
Defective fuel tank cap creating 

3. 

vacuum, preventing proper fuel flow.

Improper idle speed.

4. 

Faulty magneto, incorrect timing, or 

5. 

clogged carburetor.

Fill engine oil to proper level.  Check engine 

1. 

oil before EVERY use.
Fill fuel tank with fresh 87+ octane unleaded 

2. 

fuel/oil mix.
Test/replace fuel tank cap. 

3. 

Properly adjust idle speed.

4. 

Have qualified technician diagnose and 

5. 

service engine.

Engine knocks

Old or low quality fuel/oil mix. 

1. 

Engine overloaded.

2. 

Incorrect spark timing, deposit buildup, 

3. 

worn engine, or other mechanical 

problems.

Fill fuel tank with fresh 87+ octane unleaded 

1. 

fuel/oil mix.
Do not exceed equipment’s load rating.

2. 

Have qualified technician diagnose and 

3. 

service engine.

Engine 

backfires

Impure or low quality fuel/oil mix. 

1. 

Engine too cold. 

2. 

Choke not open after engine warm. 

3. 

Engine not properly adjusted for high 

4. 

altitude operation.
Intake valve stuck, choke stuck, 

5. 

incorrect timing, clogged carburetor, or 

overheated engine.

Fill fuel tank with fresh 87+ octane unleaded  

1. 

fuel/oil mix.
Use cold weather fuel and oil additives to 

2. 

prevent backfiring.

Move choke to run position after engine 

3. 

warms up.

Qualified technician must adjust engine at 

4. 

altitudes greater than 5,000 feet above sea 

level.

Have qualified technician diagnose and 

5. 

service engine.

Pump does not 

pump water

Pump is not primed.

1. 

Filter clogged.

2. 

Air leak at connector.

3. 

Hose leaks.

4. 

Suction hose has collapsing wall.

5. 

Hose has too small diameter

6. 

Suction lift is too high.

7. 

Prime Pump.

1. 

Clean Filter or replace if damaged.

2. 

Replace Coupling Gasket or tighten clamp.

3. 

Replace hose.

4. 

Use hose with non-collapsible wall.

5. 

Use hose with diameter 1” or greater.

6. 

Adjust suction lift.

7. 

Low Pump 

Output

Suction hose collapsed, damaged, too 

1. 

long or diameter is too small.
Air leak at connector.

2. 

Filter clogged.

3. 

Discharge hose damaged, too long or 

4. 

diameter too small.

Replace or adjust suction hose. 

1. 

Replace Coupling Gasket or tighten Clamp.

2. 

Clean Filter.

3. 

Replace or adjust Discharge Hose.

4. 

Follow all safety precautions whenever diagnosing or servicing the equipment 

or engine.

 


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Page 14

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

Part

description

Qty.

1A

Casing Cover

1

2A

O-Ring

1

3A

Spring Washer (M6)

4

4A

Bolt (6x40)

4

5A

Mechanical Seal

1

6A

Impeller

1

7A

Inner Casing

1

8A

O-Ring

1

9A

Casing

1

10A Seal Gasket

1

11A Flat Washer (M8)

7

12A Bolt (8x20)

4

13A O-Ring

2

14A Priming Plug

2

15A Hose Coupler

2

16A Hose Coupling

2

17A Coupling Gasket

2

18A Discharge Port

1

19A Intake Port

1

20A Check Valve

1

Part

description

Qty.

21A Bolt (8x20)

4

22A Bolt (8x20)

4

23A Flat Washer (M8)

4

24A Hose Clamp

3

25A Intake Filter

1

26A Frame

1

27A Nut (M8)

4

28A Shock Absorber

4

29A Pad

4

30A Bolt (8x20)

4

31A Nut (M8)

2

32A Bolt (8x25)

2

33A Bolt (5x40)

1

34A Flat Washer

1

35A Lever

1

36A Nut (M5)

1

37A Pull Wire

1

38A Drain Plug

1

39A Intake Filter Cover

1

PARTS LiST & ASSEMbLy diAGRAM - WATER PUMP

38A

39A

 


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Page 15

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

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.

PARTS LiST - EnGinE

Part

description

Qty.

 1  Set Screw (M5 x 12) 

 2  Gasket 

 1 

 3  Reel 

 1 

4

Starter Rope 

 1 

 5  Spiral Spring 

 1 

 6  Rewind Starter Assy 

 1 

 7  Starter Handle 

 1 

 8  Handle Clip

 1 

 9  Screw (M5 x 20) 

 10  Crankcase Gasket 

 1 

 11  Nut (M8)

 1 

 12  Starter Claw 

 1 

 13  Starter Reed 

 1 

 14  Pulley 

 1 

 15  Outer Snap Ring (4)

 16  Small Oil Seal 

 2 

 17  Crankcase Cover 

 1 

 18  Ball Bearing (6201/P5) 

 19  Crankshaft (Complete) 

 20  Woodruff Key (3 x 5 x13) 

 21  Set Pin (B4 x10)

 22  Screw (M5 x 12)

 23  Crankcase

 1 

 24  Washer (M8)

 25  Set Pin (B4 x10)

 26  Screw (8 X 16)

 27  Screw (M5 x 30)

4

 28  Rotor

 1 

 29  Nut (M8)

 1 

 30  Stator 

 1 

 31  Flameout Line 

 1 

 32  Screw (M5 x 21)

 33  Transmission Shaft

 1 

 34  Ball Bearing (6020)

 35  Ferrule

 1 

 36  Washer (M6)

 37  Screw (6 x18) 

 38  Fan 

 1 

 39  Screw (M5 x 20)

4

 40  Power Switch

 1 

 41  Piston Pin

 1 

 42  Piston Pin circlip

 2 

 43  Piston

 1 

 44  Piston Pin

 1 

 45  Crankcase Gasket 

 1 

 46  Piston Ring

 2 

 47  Cylinder Gasket

 1 

 48  Cylinder Cover

 1 

Part

description

Qty.

 49  Bolt (M5 x 18)

4

 50  Cylinder Cover

 1 

 51  Spark Plug

 1 

 52  Spark Plug Clip Reed

 1 

 53  Spark Plug Cover

 1 

 54  Spark Plug Cap

 1 

 55  Cap Cover

 1 

 56  Top Cover

 1 

 57  Screw (M5 x 20)

 58 

Muffler insulator 

 1 

 59 

Muffler 

 1 

 60  Socket Head Bolt (M5 x 12)

 61  Socket Head Bolt (M5 x 12)

 62  Label

 1 

 63  Stud

 2 

 64  Nut (M6)

 2 

 65 

Muffler Protection Cover

 1 

 66  Intake Port Gasket 

 2 

 67  Intake Port 

 1 

 68  Carburetor Gasket 

 1 

 69  Carburetor Assy

 1 

 70  Choke Switch 

 1 

 71  Washer 

 1 

 72  Nut (M4)

 73  Air Cleaner Case

 1 

 74  Bolt (M5 x 50)

 75  Recoil Starter

 1 

 76  Choke

 1 

 77  Self Tapping Bolt (ST42 x 12)

 78  Air Filter 

 1 

 79  Air Filter Cover 

 1 

 80  Label 

 1 

 81  Head Cover Bolt 

 1 

 82  Fuel Tank Strut 

 1 

 83  Latex Cover 

 1 

 84  Fuel Filter 

 1 

 85  Fuel Line

 1 

 86  Fuel Line Plug 

 1 

 87  Fuel Line

 1 

 88  Bolt (M5 x 20) 

 89  Fuel Tank 

 1 

 90  Packing Ring 

 1 

 91  Intake Strut 

 1 

 92  Intake 

 1 

 93  Fuel Cap 

 1 

 94 

Fuel Tank Cap w/filter 

 1 

 95  Primer 

 1 

96

Throttle

1

 


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For technical questions, please call 1-800-444-3353.

SKU 66585 

        

96

ASSEMbLy diAGRAM - EnGinE

 


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Page 17

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

LiMiTEd 1 yEAR / 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 for a period 

of ninety days from date of purchase that 

the engine/motor, the belts (if so equipped), 

and the blades (if so equipped) are free 

of defects in materials and workmanship. 

Harbor Freight Tools also warrants to the 

original purchaser, for a period of one year 

from date of purchase, that all other parts 

and components of the product are free from 

defects in materials and workmanship (90 

days if used by a professional contractor or 

if used as rental equipment).  This warranty 

does not apply to damage due directly or 

indirectly, to misuse, abuse, negligence or 

accidents, repairs or alterations outside 

our facilities, 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.

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.

3491 Mission Oaks Blvd.  •  PO Box 6009  •  

Camarillo, CA 93011  •  (800) 444-3353

EMiSSiOn COnTROL SySTEM 

WARRAnTy

United States Emission Control defects Warranty 

Statement

The  United  States  Environmental  Protection Agency  (herein 

EPA) and Harbor Freight Tools (herein HFT) are pleased to explain the 

emission control system warranty on your 1997 and later Small Off-

Road Engine (herein engine).  Within the United States, new off-road, 

spark-ignition engines certified for model year 1997 and later, must be 

designed, built and equipped to meet the stringent anti-smog standards 

set forth by the EPA.  HFT must warrant the emission control system on 

your engine for the periods of time described below, provided there has 

been no abuse, neglect or improper maintenance of your engine.

Your emission control system may include parts such as the carbu-

retor or fuel-injection system, and the ignition system. Also included may 

be hoses, belts, connectors and other emission-related assemblies.

Where a warrantable condition exists, HFT will repair your engine 

at no cost to you including diagnosis, parts and labor.

Manufacturer’s Warranty Coverage

The 1997 and later engines are warranted for two (2) years.  If 

any emission-related part on your engine is defective, the part will be 

repaired or replaced by HFT.

Harbor Freight Tools Emission Control defects 

Warranty Coverage

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.

 

Owner’s Warranty Responsibilities

As the engine owner, you are responsible for the performance 

• 

of the required maintenance listed in your Owner’s Manual. HFT 

recommends  that  you  retain  all  receipts  covering  maintenance 

on your engine, but HFT cannot deny warranty solely for the lack 

of  receipts  or  for  your  failure  to  ensure  the  performance  of  all 

scheduled maintenance.
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,  neglect,  improper  maintenance,  or  unap-

proved modifications.

You are responsible for shipping your engine to a HFT warranty 

• 

station as soon as a problem exists.  Contact the HFT Customer 

 


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Page 18

For technical questions, please call 1-800-444-3353.

SKU 66585 

        

Service department at the number below to make shipping arrange-

ments.  The warranty repairs should be completed in a reasonable 

amount of time, not to exceed 30 days.
If  you  have  any  questions  regarding  your  warranty  rights  and 

responsibilities, you should contact the Harbor Freight Tools Customer 

Service Department at 1-800-444-3353.

Harbor Freight Tools Emission Control defects 

Warranty Provisions

1.  Length of Coverage

HFT  warrants  to  a  first  retail  purchaser  and  each  subsequent 

purchaser that the engine is free from defects in materials and 

workmanship  that  cause  the  failure  of  warranted  parts  for  a 

period of two (2) years after the date of delivery to the first retail 

purchaser.

2.  no Charge Repair or Replacement

Repair or replacement of any warranted part will be performed at 

no charge to the owner if the work is performed through a warranty 

station authorized by HFT.  For emissions warranty service, contact 

the HFT Customer Service Department at 1-800-444-3353.

3.  Consequential damages Coverage

Coverage under this warranty shall also extend to the failure of 

any engine components caused by the failure of any warranted 

part while it is still covered under this warranty.

4.  Coverage Exclusions

Warranty claims shall be filed in accordance with the provisions 

of the HFT warranty policy explained in the box at the top of the 

previous page.  HFT shall not be liable for any loss of use of the 

engine, for any alternative usage, for any damage to goods, loss of 

time, or inconvenience.  Warranty coverage shall also be excluded 

for any part which fails, malfunctions, or is damaged due to failure 

to follow the maintenance and operating instructions set forth in 

the Owner’s Manual including, but not limited to:

Use of parts which are not authorized by HFT

a) 

Improper installation, adjustment or repair of the engine or 

b) 

of  any  warranted  part  unless  performed  by  an  authorized 

warranty center
Failure to follow recommendations on fuel use contained in 

c) 

the Owner’s Manual
Improper  or  inadequate  maintenance  of  any  warranted 

d) 

parts
Repairs performed outside of the authorized warranty service 

e) 

dealers
Alterations by changing, adding to or removing parts from 

f) 

the engine.

5.  Service and Maintenance

Component  parts  which  are  not  scheduled  for  replacement  as 

required maintenance or are scheduled only for regular inspection 

to the effect of “repair or replace as necessary” are warranted for 

the warranty period. Any warranted part which is scheduled for 

replacement as required maintenance is warranted for the period 

of time up to the first scheduled replacement point for that part.  

Any replacement part, provided it is equivalent in durability and 

performance,  may  be  used  in  performance  of  maintenance  or 

repairs.  The owner is responsible for commissioning a qualified 

technician/mechanic  to  perform  all  required  maintenance,  as 

outlined in the Inspection, Cleaning, and Maintenance section in 

this manual.

6.  Warranted Parts

1)  Fuel Metering System

Carburetor and its internal parts.

i) 

Fuel pump (if so equipped).

ii) 

Cold start enrichment system.

iii) 

2)  Air induction System

Intake pipe/manifold.

i) 

Air cleaner.

ii) 

3)  ignition System

Spark plug.

i) 

Magneto ignition system.

ii) 

4)  Catalyst System (if so equipped)

Exhaust pipe stud.

i) 

Muffler.

ii) 

Catalytic converter (if so equipped).

iii) 

5)  Miscellaneous items Used in Above Systems

Vacuum,  temperature  and  time  sensitive  valves  and 

i) 

switches.
Hoses, belts, connectors, and assemblies.

i)