Powerhorse M750143E User manual

Owner’s Manual
2.5 GPM, 3100 PSI Pressure Washer —EPA, CARB-Compliant
Instructions for Installation/Set-up, Operation, Maintenance, & Storage
This pressure washer produces cold water high pressure spray. Cleaning chemicals may be incorporated into the
spray if desired. The pressure pump for this equipment is powered by a gasoline internal combustion engine.
WARNING: SPECIAL HAZARDS
•CO Poisoning: Exhaust from engine contains carbon monoxide, a poisonous gas that can cause carbon monoxide
poisoning and possible death if inhaled.
•Injection Injury: High-pressure spray can pierce skin and underlying tissues, leading to serious injury and possible
amputation. Such an injection injury can result in blood poisoning and/or severe tissue damage.
•Flying Debris: High-pressure spray can cause flying debris and possible surface damage.
•Electric shock: Operating equipment in wet conditions or near water can cause electric shock.
•Chemical Exposure: Cleaning chemical vapors or contact with skin may be hazardous.
•Fire/Explosion: Engine sparking can ignite fuel or other flammable liquids or vapors in the vicinity. Hot exhaust from engine
can ignite combustible materials. Always keep a fire extinguisher rated “ABC” nearby.
•Burns: Pressure Washer pump and engine are hot surfaces that can cause burn injuries.
Detailed safety information about these hazards appears throughout this manual.
Equipment Protection Quick Facts
Inspect Upon Delivery: FIRST! Inspect for missing or damaged components. See “Initial Set-Up/Installation” section
for where to report missing or damaged parts.
Add Engine Oil: Engine is shipped without oil. See the “Engine Manual” section of this manual for instructions on
capacity and viscosity recommendations.
Replace Temporary Shipping Plug: Pump is shipped with oil but with temporary shipping plug. Check pump oil
level before starting and replace temporary shipping plug with permanent breather plug provided within plastic bag
containing this Owner’s Manual.
Water Flow Requirements: Make sure your supply water flow rate is 20% higher than the pressure washer's flow
rate (see "Operations", section for detail), and that your water is clean and particle free.
Chemical Spraying: Use only approved pressure washer chemicals designed for high-pressure use. Use soap
adjustment knob to regulate cleaning power (on select units).
Storage: Do not allow water to freeze in the pump, hose, or spray gun(s). See “Storage” for more information.
Maintenance Schedule: Engine and pump require periodic inspection and servicing to keep pressure washer
functioning efficiently. See “Maintenance Schedule Summary”for frequency of servicing.
Any Questions, Comments, Problems, or Parts Orders
Call Powerhorse Product Support 1-866-443-2576
ITEM NUMBER: 750143
SERIAL NUMBER: _____________
M750143E

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Table of Contents
Equipment Protection Quick Facts ........................................................................................................................................ 1
TABLE OF CONTENTS................................................................................................................................................2
ABOUT YOUR PRESSURE WASHER.........................................................................................................................4
SPECIFICATIONS ........................................................................................................................................................5
COMPONENT IDENTIFICATION..................................................................................................................................6
SAFETY ........................................................................................................................................................................7
Hazard Signal Word Definitions ............................................................................................................................................ 7
ON PRODUCT LABELS ...............................................................................................................................................8
Decal Locations..................................................................................................................................................................... 8
Decals................................................................................................................................................................................... 9
INITIAL SET-UP..........................................................................................................................................................11
Step 1. Inspect & Unpack...................................................................................................................................................... 11
OPERATION ...............................................................................................................................................................15
Safety Rules for Operation.................................................................................................................................................... 15
Preparing for Operation ........................................................................................................................................................ 16
Check/Add Oil to Pump....................................................................................................................................................... 16
Check/Add Engine Oil......................................................................................................................................................... 17
Inspect Fuel System/Check for Leaks................................................................................................................................. 18
Connect Hoses, Water Supply, and Spray Nozzle .............................................................................................................. 18
Prime the Water Supply......................................................................................................................................................... 20
Set Up for Chemical Spray (if desired)................................................................................................................................. 20
Start-Up Procedures.............................................................................................................................................................. 21
Start the Engine to Power the Pump................................................................................................................................... 21
Apply Cleaning Chemical (If Desired) ................................................................................................................................. 21
Pump Components ............................................................................................................................................................. 21
Begin High Pressure Spray................................................................................................................................................. 21
Shutdown ............................................................................................................................................................................... 22
STORAGE...................................................................................................................................................................23
Between-Use Storage............................................................................................................................................................ 23
Prepare Pressure Washer for Freezing Conditions............................................................................................................ 23
Prepare Engine for Long Term Storage............................................................................................................................... 24
Prepare Pressure Washer for Storage................................................................................................................................. 24
MAINTENANCE & REPAIR........................................................................................................................................25
MAINTENANCE SCHEDULE SUMMARY..................................................................................................................25
DETAILED INSTRUCTIONS –MAINTENANCE & REPAIR ......................................................................................25
Follow Safety Rules ............................................................................................................................................................ 25
Keep Pressure Washer Clean............................................................................................................................................. 25
Inspect Spray System ......................................................................................................................................................... 26
Do not start pressure washer until all needed repairs have been completed...................................................................... 26
Change Pump Oil................................................................................................................................................................ 27
TROUBLESHOOTING................................................................................................................................................28
PARTS EXPLOSION- MODEL 750143 –REV E........................................................................................................29

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PARTS LIST - MODEL 750143 –REV E....................................................................................................................30
PUMP EXPLOSION 797638 - REV E .........................................................................................................................31
PUMP PARTS LIST 797638 - REV E .........................................................................................................................32
PUMP KIT PARTS LIST 797638 - REV E...................................................................................................................33
ENGINE EXPLOSION (799841)-REV E......................................................................................................................34
ENGINE PARTS LIST (799841)-REV E......................................................................................................................35
ENGINE KIT LIST (799841)-REV E............................................................................................................................36
ENGINE MANUAL ......................................................................................................................................................37
ENGINE STARTING COMPONENTS.........................................................................................................................37
MAINTENANCE SCHEDULE .....................................................................................................................................38
ENGINE OIL RECOMMENDATIONS .........................................................................................................................38
LIMITED WARRANTY ................................................................................................................................................42
CALIFORNIA PROPOSITION 65 INFORMATION .....................................................................................................44

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About Your Pressure Washer
Thank you for purchasing a Powerhorse Pressure
Washer! It is designed for long life, dependability, and
top performance.
Intended Use. Produce a high-pressure water spray.
Incorporate cleaning chemicals into a low-pressure
water spray.
Note: Do not use for other purposes, as unforeseen
hazards or equipment damage may result.
Power Source. The pressure washer is powered by a
gasoline engine.
Supplies Required. Normal operation will require you
to supply:
•Pressure Washer pump oil
•Gasoline
•Engine oil
•Personal Protection Equipment
See “Specifications”section of this manual for more
detail.
Site Location. Intended for outdoor use only.
Personal Protection. Wear safety apparel during
operation, including safety glasses with side and top
protection. Ear protection is also recommended if
working near any operating engine. Other safety apparel
includes waterproof insulated gloves, and non-slip
protective footwear. Cleaning chemicals may require the
use of respiration mask; refer to chemical label for
further instruction.
Adult control only. Only trained adults should set up
and operate the pressure washer. Do not let children
operate.
Under The Influence. Never operate, or let anyone else
operate, the pressure washer while fatigued or under
the influence of alcohol, drugs, or medication.
Keep this manual for reference and review.
ATTENTION: Rental Companies and Private
Owners who loan this equipment to others!
All persons to whom you rent/loan this pressure washer
to must have access to and read this manual. Keep this
owner’s manual with the pressure washer at all times
and advise all persons who will operate the machine to
read it. You must also provide personal instruction on
how to safely set-up and operate the pressure washer
and remain available to answer any questions a
renter/borrower might have. Owner’s Manuals are
available from Powerhorse at 1-866-443-2576

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Specifications
Model #
750143
FLOW OUTPUT
PSI (bar)
3100 (214)
GPM (l/min)
2.5 (9.4)
Max Water Temp
140F (60C)
ENGINE
Engine
Powerhorse
Horsepower
212CC
DIMENSIONS / COMPONENTS
Length
25.5”
Width
21”
Height
38.5”
Weight
68lbs
Pump Oil Capacity
100 ml. (3.4 oz.)
SUPPLIES REQUIRED (not included)
Engine Oil
Refer to the “Engine Manual”
section
Pump Oil
(shipped with oil, but refills required)
SAE 30 non-detergent pump oil

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Component Identification
1. Pressure Washer Pump: Inspect for
loose/broken parts prior to each use.
2. Pump Dipstick/Oil Fill: Add pump oil here.
3. Pump Oil Drain: Drain pump oil from here.
4. Pump (Water) Inlet: Attach garden hose here.
5. Pump (Water) Outlet. Connect high pressure
hose here.
6. Pressure Adjustment (Unloader): Valve that
regulates pressure and directs flow into bypass
when trigger is closed.
7. Chemical Injector: Push chemical hose onto
injector to route chemical from chemical bucket
into pump.
8. Thermal Protector: Valve that regulates water
temp in the pump
9. Engine: The air-cooled engine powers the pump.
10. Upper Gun Holder: Store gun here.
11. Lower Gun Holder: Store lance here.
12. Nozzles: Change nozzles for different spray
patterns.
13. Handle: Designed for easy cart movement.
14. Hose: Attach couplers to gun and water outlet.
15. Spray Gun: Source of pressurized water, use two
hands for safe operation.
16. Trigger: Pull to allow pressurized water to flow
out of spray gun.
17. Onboard Soap Tank: Store cleaning solution.
See “Parts Explosion” for more details
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7
3
4
5
8
14
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11
1
10
16
15
12
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Safety
Hazard Signal Word Definitions
DANGER
WARNING
CAUTION
CAUTION
NOTICE
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 (red) indicates a hazardous situation, which if
not avoided, will result in death or serious injury.
WARNING (orange) indicates a hazardous situation,
which if not avoided, could result in death or serious
injury.
CAUTION (yellow), used with the safety alert symbol,
indicates a hazardous situation, which if not avoided,
could result in minor or moderate injury.
CAUTION (yellow), without the safety alert symbol, is
used to address practices not related to personal injury.
NOTICE is used to address practices not related to
personal injury.

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On Product Labels
Decal Locations
WARNING:
ALWAYS make sure safety labels are in place and in good condition. If a safety label is missing or not legible, order new labels
from Powerhorse Product Support at 1-866-443-2576
On-Product Warning Labels
Location
Part numbers
Description
1
788935
Fuel Fire Explosion Hazard Warning
2
795124
Fuel Ethanol Warning
3
795346
Poisonous Gas Warning
4
795343
Operation Warnings
5
790852
Burn Hazard Warning
6
795292
Air Filter
7
795293
Fuel/Choke
8
795294
Throttle
9
N/A
Emissions Control
10
795347
Nameplate
11
795289
Recoil
12
795288
Powerhorse
13
795290
Operating Instructions
14
795291
Nozzle
15
795350
Engine On/Off
9
15
13
5
2
14
13
12
8
11
4
10
7
6

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Decals
To order replacement safety labels, call Powerhorse Product Support
at 1-866-443-2576
1
2
3
4
5
7
6
8
9
10

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Decals Continued
To order replacement safety labels, call Powerhorse Product Support
at 1-866-443-2576
11
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13
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