Owner's Manual

Important precautions and safety warnings

          Read Operator’s manual completely before proceeding to use this machine! Provide a copy to anyone using the machine and emphasize these precautions and safety warnings to prevent possible personal injury to the user or others. Know your machine—consider its limitations and potential hazards!


If skin is hit by sprayed liquid, contact a physician immediately. Skin penetration can cause permanent injury.

Note to Physician:

Injection into the skin is a serious, traumatic injury. Contact the National Poison Control Center Network, (800) 962-1253 for treatment regimen.

  • ¨Always wear safety glasses or goggles when operating or performing maintenance. Wear protective clothing such as gloves, rubber boots, rubber suits, etc.
  • ¨Do not wear loose clothing, jewelry, or anything that may be caught in the starter or other rotating parts.
  • ¨Do not operate this equipment if you have consumed alcohol or taken medication.
  • ¨Never put your hand or fingers in front of spray gun. Never point spray gun at yourself, another person or any animal.
  • ¨Always remove the spark plug or cable from the spark plug to prevent accidental starting, when not in use, or prior to detaching the high-pressure hose.
  • ¨To narrow pinpoint stream is very powerful.  It is not recommended for use on painted surfaces, wood surfaces or items attached with an adhesive backing.
  • ¨Do not spray directly at glass or fragile objects.
  • ¨Water spray must never be directed towards any electric wiring or directly towards the Pressure Cleaner machine itself or fatal electric shock may occur.
  • ¨Do not allow hose to come in contact with hot muffler.
  • ¨Do not use an undersized discharge nozzle. Use only the nozzles supplied with this machine.
  • ¨Never disconnect the high-pressure discharge hose from the machine or from the gun/wand assembly while the system is pressurized. To depressurize the machine, turn off water and power supply and press trigger on gun 5-6 times.
  • ¨Never operate this machine without sufficient water supply to the pump.  This will result in serious damage to the pump.
  • ¨Never leave the wand unattended while the machine in running.
  • ¨Never tie knots or kink the high-pressure hose as damage could result.
  • ¨Prior to starting the Pressure Cleaner in cold weather, be sure ice has not formed in any part of the equipment.
  • ¨Avoid extending the hose across high traffic areas while using the cleaner and never leave the hose where it may be run over by vehicles of any type.
  • ¨Never pull on the hose to move the machine.
  • ¨Never pull the hose around a tight corner or force it into a small loop. The wire braid hose used on all models has a minimum bend radius of 5” and should not be forced into any small head.
  • ¨When lifting or transporting pressure cleaner, secure and lift with appropriate lifting handles.
  • ¨Never operate gas unit in an enclosed area. Always operate this or any gas engine in a well-ventilated area.
  • Failure to do so could result in serious injury or death.
  • ¨Never permanently secure or lock the trigger gun mechanism in the pullback (open) position.
  • ¨Never operate machine without all components properly connected to the machine.
  • ¨Always follow chemical manufacturer’s label recommendations for proper use of chemicals. Always protect eyes, skin and respiratory system against chemical use. (For chemical recommendations specific to your application, contact your local janitorial supply or chemical manufacturer).
  • ¨Never adjust unloader valve to a pressure in excess of machine rating. The pressure is factory preset and should never be tampered with.
  • ¨Never operate this machine in or near an explosive environment.
  • ¨Never alter or bypass manufacturer’s design or any safety device on this machine. Use only high-pressure hose provided with this machine.
  • ¨Never operate machine on unstable surface (Operate and store only on stable surfaces)
  • ¨Never operate machine with broken or missing parts, or without protective housing and/or covers.
  • ¨Always hold gun/wand assembly firmly when starting and operating the machine.
  • ¨Always use both hands when operating Pressure Cleaner to maintain complete control of the wand.
  • ¨Engine must not be run at excessive speeds.  Operating an engine at excessive speeds increases the hazard of personal injury.  Do not tamper with parts, which may increase or decrease the governed speed.
  • ¨To minimize the amount of water getting onto the Pressure Cleaner, the unit should be placed as far as possible from the cleaning site during operation.
  • ¨Check the fuel system periodically for leaks or signs of deterioration such as chaffed or spongy hose, loose or missing parts or damaged tank or cap. All defects should be corrected before operation.
  • ¨Always discontinue spraying if you begin to feel fatigued.
  • ¨Always avoid contacting the skin with uninsulated parts of the equipment when spraying hot liquids.
  • ¨Always stop engine if unit is not to be operated within 15 minutes.
  • ¨Keep the Pressure Cleaner clean and free of oil, mud, and other foreign matter.
  • ¨Store the Pressure Cleaner in a well ventilated area with the fuel tank empty. Fuel should not be stored near the pressure cleaner.
  • ¨Clean up spilled soap, fuel, or oil immediately to avoid falls.
  • ¨Keep clutter out of work area to avoid falls.
  • ¨Never squeeze the spray gun trigger unless you are securely braced. The force of water through the nozzle is powerful enough to cause you to lose your balance and fall.

Your pressure cleaner should never be operated under these conditions:

            Change in entire speed

            Engine misfire

            Excessive vibration

            Flame or smoke

            Enclosed compartment

            Rain or inclement weather

Before Operation

 Note: The engine and pump on your pressure cleaner will often have improved performance after a break-in-period of several hours.

Caution: Some models have tape over the vent hole. Remove the tape prior to use. Before starting the pressure cleaner, check for loose or missing parts and for any damage, which may have occurred during shipment.

The pump has been shipped with oil. Before operating the pressure cleaner check the oil level of the pump. The oil level should be at the center of the sight glass on the side of the pump. Add SAE 30 WT non-detergent oil if required.

Fuel: Fill the tank with clean, fresh unleaded automotive gasoline. Regular grade gasoline may be used provided a high octane rating is obtained (at least 87-93 pump octane).

Selection of Garden hose

Up to 3 gallon per minute models use minimum 5/8”x50’ garden hose.

Up to 5 ½ gallon per minute models use minimum ¾”x50”garden hose.

Safety Precautions (for gasoline engines)

Please make sure you review each precaution carefully.

Exhaust Precautions

  • Never inhale exhaust gases. They contain carbon monoxide, a colorless, odorless and extremely dangerous gas that can cause unconsciousness or death.
  • Never operate the engine indoors or in a poorly ventilated area, such as tunnel, cave, etc.
  • Exercise extreme care when operating the engine near people or animals.
  • Keep the exhaust pipe free of foreign objects.

Refueling Precautions

  •  Be sure to stop the engine prior to refueling.
  • Do not overfill the fuel tank.
  • If fuel is spilled, wipe it away carefully and wait until the fuel has dried before starting the engine.
  • When changing oil, make sure that the fuel cap is secure to prevent spillage.

Fire Prevention

  •  Do not operate while smoking or near an open flame.
  • Do not use around dry brush, twigs, cloth rags, or other flammable materials.
  • Keep the engine at least 3 feet (1 meter) away from buildings or other structures.
  • Keep the engine away from flammable ands other hazardous materials (trash, rags, lubricants, explosives).
  • Be careful of hot parts.The muffler and other engine parts become very hot while the engine is running or just after it has stopped. Operate the engine in a safe area and keep children away from the running engine.
  • Never make adjustments on the machinery while it is connected to the engine, without first removing the ignition cable from the spark plug. Turning the crankshaft by hand during adjusting or cleaning might start the engine, and machinery with it, causing serious injury to the operator.
  • Never run the engine with governor disconnected, or operate at speeds in excess of 3400 rpm load.


  •  Operate the engine on a stable, level surface free of small rocks, loose gravel, etc.
  •  Operate the engine on a level surface.  If the engine is tilted, fuel spillage may result.
  •  Be careful of fuel spillage when transporting the engine.  Tighten the fuel tank cap securely and close the fuel strainer cock before transit.
  • Do not move the engine while in operation.
  • Keep the unit dry (do not operate it in rainy conditions or near water).
  • Carefully check fuel pipes and joints for looseness and fuel leakage. Leaked fuel creates a potentially

Dangerous Situation

  • Check bolts and nuts for looseness. A loose bolt or nut may cause serious engine trouble.
  • Check the engine oil and refill if necessary.
  • Check fuel level and refill if necessary.
  • Take care not to overfill the tank.

Electric Starter Models

 Parts to be prepared

            In case your engine has the electric starter, please prepare the following accessories:

  •  Use a battery rated 12V-24AH or larger.
  • Install red cable to positive terminal of battery and black cable to negative.
  • Tighten bolts and nuts on terminals securely so they will not be loosened by vibration.

Easy trouble shooting

When engine does not start:

  •  Perform the following checks before you take the engine to your engine dealer.
  • If you still have trouble after completing the checks, take the engine to your nearest authorized Engine dealer.

Is there enough compression?

  • Pull the starter handle slowly and check if resistance is felt,
  • If little force is required to pull the starter handle, check if the spark plug is tightened firmly.
  • If the spark plug is loose, tighten it.

Is the spark plug wet with gasoline?

  •  Choke (pull choke knob) and pull the starter handle five or six times. Remove the plug and check if its electrode is wet. If the electrode is wet, fuel is well supplied to your engine.
  • When the electrode is dry, check where the fuel stops. (Check the fuel intake of the carburetor and fuel strainer intake.)
  • In case the engine does not start with well supplied fuel, try using fresh fuel.

WARNING: Before testing, carefully wipe up spilled gasoline. Hold the plug as far away from the spark plug hole as possible.  Ground the side of the electrode to any engine ground.

Is there a strong spark across the electrode?

  • Remove the plug and connect it to the plug cap.  Pull the starter handle while touching the plug against the engine ground.
  • Try with a new plug if the spark is weak or there is no spark.
  • The ignition system is faulty if there is no spark with a new plug. Take your engine to the nearest engine dealer.

NOTE: Engines with oil sensor will stop automatically when the oil level falls below the prescribed limit. The engine cannot be started unless the oil level is raised above the prescribed limit.

Is your battery well charged?

  • If your battery for the electric starter is overly discharged, your engine will not start. Consult your nearest dealer or service shop.

Oil Sensor Instructions

Is your oil sensor ok?

      The engine will stop automatically when the oil levels fall below the safety limit. The engine cannot be started unless the level is raised above the prescribed limit.


      Fill the crankcase with oil up to the proper level. NOTE: Do not remove the oil sensor unit from the engine when cracking the oil level and refilling.

Preparations for storage

 Clean and store

      Slowly pull the recoil starter knob until resistance is felt and leave it in that position. Clean the engine thoroughly with an oiled cloth, put the cover on, and store the engine indoors in well-ventilated, low humidity area.

Ready to begin operation and start your water cannon

  • Add gasoline to the unit as needed. Do not add to a hot engine or if the engine is running.
  • Add oil to the unit as needed. Use only specified oils. (refer to pump and engine manual.)
  • Connect pressure hose and gun wand assembly to the quick connect outlet of the pump. Be sure quick disconnects fittings are securely locked in place prior to pressurizing or starting.
  • Connect the water hose to the water inlet on the pump.

Important: Check inlet filter screen and clean periodically to avoid restricting water flow due to deposits in the filter screen.

  • Turn on the water supply to the machine.
  • Select proper nozzle from nozzle selection guide.
  • Depress trigger on gun to start water flow. Release trigger to stop water flow.

NOTE: In initial start up it may be necessary to purge the air from your garden hose. To do this simply depress and release trigger on gun until all air has been removed and pulsating has stopped.

    Start engine. See engine manual for starting and running instructions.

Nozzle selection guide

Caution: Make sure that tips are locked securely. Never point the pressure spray at any person or any part of the body. Eye protection should be worn to insure proper safety.

Standard Applications

Caution: The spray force from these nozzles can cause injuries if pointed directly at yourself or others.

Before observing directly always disconnect from spray wand.

0 degree-blasting

  • Removing caked on mud from heavy construction, farm or lawn equipment.
  • Cleaning tar, glue or stubborn stains from concrete.
  • Removing excess mortar from masonry.
  • Cleaning overhead areas.
  • Removing rust from steel and oxidation from aluminum.

15 degree-stripping

  • Removing paint from wood, masonry or metal.
  • Removing grease or dirt from equipment.
  • Removing heavy mildew stains.
  • Removing marine growth from boats and marine equipment.
  • Removing rust from steel and oxidation from aluminum.

25 degree-cleaning

  • General cleaning of dirt, mud and grime.
  • Cleaning roofs, gutters and downspouts.
  • Removing light mildew stains.
  • Removing algae and bacteria build-up from pools.
  • Rising surfaces in preparation for painting.

40 degree-washing

  • Light cleaning and washing.
  • Washing and rinsing of automobiles and boats.
  • Cleaning roofs, windows, patios and driveways.
  • Sweeping parking areas and sidewalks.
  • Rinsing screens and delicate surfaces.


Instructions for chemical injector activation.

For high PSI- to rinse at high temperature

Turn clockwise

For low PSI- To draw chemicals

Turn counterclockwise


From 0 degree to 50 degree

Adjustable Spray Nozzle

            The adjustable spray nozzle can adjust spray from fan to pencil point in both the high and low  pressure positions. The spray is adjusted by turning the nozzle.

CAUTION: The pencil point spray adjustment is very aggressive. We recommend that for most

cleaning applications, a twenty-degree (20) spray angle is used to avoid damage to the surface being sprayed.

To increase angle to a fan spray, turn counterclockwise.

To clean nozzle Obstruction.


  • Clogging of the nozzle causes the pump pressure to be too high and cleaning is immediately required.
  • Clear the nozzle with a nozzle cleaner (i.e. paper clip or pin).
  • Restart the pressure cleaner & depress the trigger on the spray gun. If the pressure is still too high, repeat.
  • If the previous procedure does not clear the nozzle, insert a 2 mm allen wrench into the slot at the adjustable nozzle.  Rotate counter-clockwise to remove. Reinsert the nozzle after clearing or replace with a new one.

NOTE: If the nozzle is screwed in too far, it will prohibit shifting the nozzle to the high-pressure position.

CAUTION: The nozzle cleaner must only be used when the spray wand is disconnected from the gun or personal injury could result.


          This injector consists of a Venturi Assembly which quick couples to the machine’s discharge

            Quick connect and a low pressure “detergent” nozzle which quick connects to the end of the wand.


  • Make certain machine is shut off, water supply is off and that all pressure is relieved from the system by triggering the gun momentarily.
  • Disconnect the high pressure hose from the discharge quick connect on the machine.
  • Insert the chemical injector assembly into the discharge quick connect on machine.
  • Reattach the high pressure hose into the female quick connect on the chemical injector assembly.
  • Turn the adjustment knob on the venturi assembly a few rounds counterclockwise to fully open position.


  • Once the chemical injector assembly has been installed securely you are ready to use.
  • Refer to operator’s manual for correct starting procedures. Start the pressure washer with a 15, 25, or 40-degree nozzle.
  • Wet the area to be cleaned.
  • Disconnect the high-pressure nozzle from the end of the wand and replace with detergent nozzle.

NOTE: This injection system is designed to apply detergents under low pressure only. It will not allow detergent solutions to be introduced into the detergent system unless the detergent nozzle, identified by the number 6540 stamped on the end is installed. After connecting the detergent nozzle, squeeze the trigger on the gun. Water will spray out of the nozzle under low pressure followed shortly by the detergent water mixture. NOTE: If this does not occur within one minute of triggering the gun, refer to the “Detergent Injector Troubleshooting Guide” in this manual.

            Hold the detergent nozzle approximately two feet from the surface being cleaned and “mist wet” with cleaning solution.

            Allow to soak briefly then remove the detergent nozzle and replace with desired high-pressure nozzle to “chisel” the dirt off with high-pressure spray. NOTE: Immediately after the high pressure nozzle is installed and the trigger is squeezed, the cleaning solution will discharge under high pressure until what was left in the line from the siphon mode is purged. This should take less than 30 seconds.

            When rinsing with high-pressure spray keep the nozzle at an angle to the surface about six inches away.

If some dirt remains, repeat the procedure outlined above, allowing the detergent to soak a little longer.


          The siphoning rate can be adjusted lower and turned off by turning the knob clockwise to desired setting.

Fully clockwise is off. Soap will not siphon with the knob turned fully clockwise.


          Important: Before disconnecting the venturi assembly from the machine siphon a gallon of tap water

through the system to prevent corrosion or gumming of parts. This is especially important when bleach or acids are being used.

            If the detergent strainer or hose shows any signs of damage or deterioration, replace immediately.

            Siphon ratios are approximate. They vary with the temperature and viscosity of detergent.

            Always “spot-test” a detergent on the cleaning surface to determine if a detergent reaction may occur before beginning a cleaning job.  This is best done at least a day in advance.  Always be certain to rinse cleaning surface thoroughly with water.

            To apply detergent solution, start spraying the lower portion of the surface being cleaned and move up using long overlapping strikes.  Applying detergents from the bottom up helps avoid streaking.

            For best rinsing results, start at the top and work down.

             CAUTION: Avoid working on hot surfaces or in direct sunlight to minimize the chances of the soap damaging painted surfaces.

             CAUTION: Damage may occur to painted surface if soap is allowed to dry on the surface.

Wash and rinse a small section at a time.


            The hose, gun, tips, and chemical injector are equipped with Quick-Disconnects.

            There is an o-ring seal inside the female quick connect which will deteriorate or be blown out

occasionally. This may occur if the unit is allowed to pump without the hose or nozzle attached. Simply insert a replacement O-ring to correct the leak. (Replacement O-ring kit included in owner’s manual.)

            The hose, chemical injector, and hose connection on the spraying gun use 3/8” sockets and plugs.

The tips and the connection at the ends of the wand are ¼” sockets and plugs. Quick-Disconnects allow for fast and easy changes of guns, extension tips, and hoses. No tools are required. CAUTION: Make sure that the couplers are locked together securely before starting the unit.


            The thermal relief valve is designed to open and release hot water that exceeds 145 degrees when system  is in the bypass-mode.  The releasing of hot water allows cold water to enter system and keeps unit operating within temperature limits.  Temperature that exceeds 145 degrees in your pump will cause premature packing seal failure. If this occurs and the pump overheats the valve should be replaced.


          The pressure cleaner is equipped with a stainless steel water inlet screen to protect the pump.

            CAUTION: If the screen is not kept clean, it will restrict the flow of water to the pressure cleaner and may cause damage to the pump.

Remove screen and back flush to remove impurities from screen. Replace immediately.

            CAUTION: Do not damage the screen while removing or cleaning screen. Any foreign particles entering the pump may damage the pump.


          The pressure is adjustable by turning the pressure adjustment knob located on the outlet side of the pressure cleaner. The knob must be set at the extreme clockwise position for maximum pressure and turned several turns counter clockwise for minimum pressure.

NOTE: With the pressure adjustment knob turned to the maximum pressure position (clockwise), the pump pressure may exceed the rated pressure of the machine, which could overload the engine. Do not force adjustment past factory setting.

            Adjust the knob counter-clockwise to reduce the pressure and lower the power requirements of your pressure cleaner pump.

NOTE: Some models have a different type pf pressure adjustment knob, or certain models do not have a pressure adjustment.

            The pressure may also be regulated by the use of the engine throttle.


Follow these simple steps:

1.Run clear water through the pump to remove any chemical/soap residue and to avoid corrosion, rust or gumming of parts.

2.Turn off engine (see engine manual for instructions).

3.Turn off water supply.

WARNING: DO NOT disconnect any components while power supply or water supply are still engaged.

            Failure to adhere to this WARNING could result in severe bodily injury and/or result in damage to your pressure cleaner including loss of parts such as O-rings and fittings.

Once engine power and water supply have been turned off, depress the trigger on the gun/wand assembly to depressurize machine.

Prepare machine for storage. Disconnect and drain all components of excess water. Wrap hose to avoid crimping and kinking. PROTECT FROM FREEZING.


           Before running the pump, check the oil level by viewing the sight glass on the end of the pump.

When properly filled, the oil will be at the halfway point (red dot), when setting on a level surface.

            Do not overfill. Add 30 weight non-detergent oil if necessary.

            Oil should be changed after first twenty hours of operation, with subsequent changes every one hundred hours of operation. (To drain oil, simply remove the oil plug from under carriage or back drain plug of the pump using a crescent wrench).

IMPORTANT: In geographical areas of high humidity, oil change may be necessary more frequently.

If oil in the pump begins to look “milky” you are getting water in the oil and must be changed

immediately to avoid damage to the pump’s crankcase.

             After starting your machine, it may be necessary to prime the pump. Simply open and close the trigger on the gun several times. If pump does not prime within a few seconds, stop engine and inspect installation for suction leaks or obstructions.

            Do not let pump run dry. Make sure the strainer is not clogged. Be sure that the suction line is not obstructed, kinked or blocked.

            After each use of a chemical/soap, flush pump with a neutralizing solution for the chemical/soap just used. Follow with a clear water rinse. It is good practice to clean the pump after each use to prevent deposits, corrosion and rust forming, causing damage to the pump.

            Recommendations for proper neutralizing solutions, contact your local janitorial supply or chemical  manufacturer.


 Pump Storage

            CAUTION: Always store your pressure cleaner in a location where the temperature will not fall below 32F.  The pump in this machine is susceptible to permanent damage if frozen.  Freeze damage is not covered by warranty.  General pump warranty covers pump manifold only.

If you must store your pressure cleaner in a location where the temperature is below 32F, you can minimize  the chance of damage to your machine by utilizing the following procedure.

Shut off water supply and relieve pressure in the spray gun by depressing the trigger. Disconnect the garden hose from the pressure cleaner, but leave the high pressure hose connected.

Tip the unit on its side with the inlet connection pointing up at a 45-degree angle.

Insert a small funnel (to prevent spilling) into the inlet and pour in approximately 2 cups of antifreeze.

Disconnect spark plug wire.

Without connecting garden hose pull the recoil several times to circulate the antifreeze in the pump system.

Continue too add antifreeze and pull the recoil until the antifreeze is expelled when the trigger is pulled.

Disconnect the high-pressure hose. The anti-freeze will serve as a rust preventative during storage and help prevent the valves from sticking.

Another method of reducing risks of freeze damage is to drain your machine as follows:

Stop the pressure cleaner and detach supply hose and high-pressure hose.

Squeeze the trigger of the discharge gun to drain all water from wand and hose.

Restart pressure cleaner and let it run briefly (about 5 seconds) until water no longer discharges from the high pressure outlet.


When the pressure cleaner is not being operated or is being stored more than one month, follow these Instructions.

            Replenish engine oil to upper level.

            Drain gasoline from fuel tank, fuel line, fuel valve and carburetor.

            Cover the pressure cleaner and store in a clean, dry place that is well ventilated away from open flame

            Or sparks.

NOTE: The use of a fuel additive, such as STA-BIL, or an equivalent, will minimize the formulation of fuel gum deposits during storage. Such an additive may be added to the gasoline in the fuel tank of the engine, or to the gasoline in a storage container.


          Caution: prior to restarting, thaw out any possible ice from the pressure cleaner hoses, spray gun & wand.


Symptom                                                             Cause                                                   Solution_______________

Engine won’t start                                             No fuel________________________ Check and fill___________ 

_____________________________________Spark plug_____________________  Replace spark plug_______

Engine is overload                                               Nozzle partially                                    Clean Nozzle as

_______________________________________blocked______________________ instructed on page 14_____

                                                                          Excessive Pressure                               Reduce pressure by turning

                                                                                                                                        Adjustable unloader valve


Red light flickering_____________________ oil level low_____________________ check and fill__________

            Important: This equipment is manufactured with an oil level sensor and will not start if the proper

_________________________________level of oil is not maintained._________________________________

Pump running normally                          Water Supply                                       Check water supply

but pressure does not                                        restricted                                             and filter screen for

achieve maximum                                                                                                         blockage. Check hoses

rating                                                                ______________________________for blockage,kinks,leaks,etc._

                                                                         Open faucet                                         Thaw out unit completely

                                                                                                                                    Including hose, gun, and

                                                                                                                                    Wand. Unit has been stored

                                                                                                                                      in freezing temperature._____

                                                                               faucet closed                                       Unit has been stored in freezing


                                                                               Pump sucking air                                 Check that hoses and fittings

                                                                               _______________________________are air tight_______________

                                                                               Unloader valve seat                              Check and replace

                                                                               faulty or worn___________________________________________

                                                                               Nozzle incorrect or worn                     _Check and replace_________

                                                                               Worn piston packing______________Check and replace_________

                                                                               Adjustable nozzle in low                          Turn to high PSI position

                                                                                        PSI position________________________________________

Fluctuating Pressure                                          Valves worn, dirty or stuck                     Check, clean or replace_____

                                                                         Pump sucking air                                    Check that hoses and fittings

                                                                                                                                        are air tight. Purge air from

                                                                                                                                        garden hose._____________     

      Pressure drops after                                           Nozzle worn_____________________check and replace_________

      period of normal use

                                                                               Valves worn, dirty or stuck                      check, clean or replace_____                                                                                   Nozzle clogged,                                      clean or replace

                                                                               partially obstructed                              _________________________

                                                                               Worn piston packing_______________check and replace________

                                                                               Adjustable nozzle in low                        Turn to high PSI position

                                                                               ______PSI position______________________________________

      Pump noisy                                                       Pump sucking air                                    check that hoses and fittings                                                                                                                                                            are air tight________

                                                                                Valves dirty or worn                              check, clean or replace          _

                                                                                Worn bearings                                         check & replace if necessary

  Water too hot                                          Reduce temp. below 140F   _

Presence of water in oil                                       High humidity                               check and replace________

  (oil milky)                                                         Piston packing and oil                  check and replace

__________________________________________seal worn__________________________________________

Water dripping from pump                                  Piston packing worn_______________check and replace_________                      O-rings of piston guide                             check and replace

    or retainer guide                ________________________________

Fittings loose_____________________check and tighten_________

Oil dripping                                                        Oil seal worn                                            check and replace a small

                                                                                                                                          Amount of leakage is normal

                                                                            Oil level too high                   Drain level to center of sight


Recoil starter hard to pull                                       Static back pressure                        Relieve pressure by squeezing

   built up in outlet hose                       trigger gun or turn adjustable

                                                                             and gun assembly                             unloader counter clockwise

___________________________________________________________________       during starting._________



            Warranties shall not apply to any unit or part damage due to normal wear, alteration, misuse, misapplication

or operated in a manner not recommended by Maury Enterprises, Inc. Also, equipment damaged or worn because

of the use of caustic materials or the operation in abrasive or corrosive environments or under any conditions

which cause cavitations are not operating procedures or maintenance will also void warranty.

            Maury Enterprises, Inc. responsibility is to repair or replace defective parts only. We will not be

responsible for loss of use of the unit, loss of rental, inconvenience or consequential damages. This warranty is in

lieu of all other warranties, expressed or implied or statutory.

            Maury Enterprises, Inc. does not authorize any other person or part to make any additional obligation or

promise on our behalf, unless made in writing and signed by an officer of Maury enterprises, Inc.

                                                               LIMITED WARRANTY

Maury Enterprises, Inc. will replace upon examination by the factory or an authorized agent, any parts found to

be defective in material or workmanship free of charge.  All transportation and freight charges incurred in

shipping  a defective pressure cleaner or part to the factory or authorized agent shall be paid by the buyer.

The all aluminum frame is covered by a lifetime replacement warranty. The warranty covers the base, handle,

bumper and front leg.

The user shall determine the suitability  of the product for its intended use prior to placing the unit in service.

said user assumes all risk and liability in connection with determining the suitability of the unit for its particular

use. Neither the seller nor the manufacturer shall be liable for any injury, loss or damage arising out of the

improper use of operation of said unit.


The following items (normal wear parts) are covered for ninety (90) days from the date of purchase:

                        Regulating valve/unloader                                              Quick coupling

                        High pressure hoses                                                      Pump packings

                        Trigger gun and wand                                                   Pump valves

                        Pressure gauge                                                 Injector valves

Engines and motors sold to Maury Enterprises, Inc. and then sold to you are subject to the warranty of that

company and should be directed to their service facility for warranty evaluation and determination.

Pump and accessories are warranted by the manufacturer of the specific product, and subject to the

manufacturer’s limited warranty.  Pumps on the Maury Enterprises product are warranted against manufacturers

defects to the original owner for two or five years from date to purchase.




Use 30W Detergent motor oil in the engine.  Change every 40hrs. fill to full on dipstick- DO NOT overfill.

_________________________NOTE: Pumps & Gear box fill ½ full.____________________________




Pump Use= 30W Non-Detergent motor oil. Gear Box= 80-90w gear lube.


Gear Box (if you have one)

The proper level is ½ way between the bottom of the dip stick and full line. Use 80-90w gear lube.


Use 15/50 synthetic oil. Change every 120 hrs or 3rd engine oil change. Fill to middle of sight window.


Gear Box (if you have one)

Use 80-90w gear lube. Fill to middle of sight glass.


                        Use General pump oil. Fill to middle of sight window.


Gear Box (if you have one)

Use 80-90w gear lube. Fill to middle of sight window.


                        Use CAT pump oil. Fill to middle of sight window.


Pump use= 30w Non-Detergent motor oil.

Gear Box= 80-90w gear lube.