GENTRON 4200 PSI Owner's Manual - User Manual

Full Text Searchable PDF User Manual

1. General Assembly Drawings

Item Description

1. Handle
2. Engine
3. Tyre
4. Interchangeable spray nozzles
5. High pressure hose
6. Hose reel
7. Spray gun
8. Pump
9. Battery

2.Specifications

3. Safety instruction:

The appliance is intended to clean cars, garden and roof etc.
Never attempt to use power washers on or near any electrical outlets, fuse boxes, transformers, high voltage wires,
etc. Severe electrical shock or death may occur. Never point nozzle at people or animals.

A brief description of possible hazards associated with mishandling of the battery, such as burn hazard,

fire hazard, explosion hazard.

A list of actions to take to avoid possible hazards, such as do not crush, disassemble, dispose of in fire,

or similar actions.

KNOW YOUR PRESSURE WASHING EQUIPMENT

1. READ YOUR OWNERS MANAUL CAREFULLY. Do not operate your power washer until you completely

understand and can follow all operating instructions, precautions and safety rules.

2. Restrict the use of your power washer to users who have read, understand and can follow all operating

instructions, precautions and safety rules.

3. Never allow children to use the washer.

Owner’s Manual

Item number

GW5401 & GW5401-C

Maximum Pressure 4200 PSI

Horese Power 13 HP

RPM 3600 RPM

Electric Starter Yes

PLAN AHEAD

1. Always wear ear protection to cut noise and eye protection and / or face shield to prevent debris from flying or

ricocheting into eyes and face which could result in serous injury.

2. Dress safely in long pants and wear safety boots, safety gloves, safety helmets with visors, etc. Other protective

equipment is advisable when using chemicals, cleaning detergents or other corrosive or abrasive substances.

3. Do not operate pressure washing equipment if you have consumed alcohol or taken medication.
4. Keep pets, children and bystanders a safe distance away from your work area. A minimum of 50 feet is recommended.
5. Do not spray directly at glass or fragile objects.
6. CAUTION after turning off your pressure washer and water supply, there is still high pressure water trapped in

the system. You must release the pressure by triggering the gun after the engine has completely stopped.

PRECAUTIONS FOR GASOLINE ENGINE

1. Follow all safety precautions, operating procedures and maintenance listed in your engine operator’s manual

which came with the pressure cleaner.

2. DO NOT fill the engine with gasoline when the engine is running, hot or near an open flame. DO NOT SMOKE.
3. Do Not run power washers in an enclosed area for the exhaust fumes and hazard of noise. Exhaust fumes

contain poisonous carbon monoxide gas. Breathing exhaust gases can cause serious illness or death.

4. Do Not touch or come in contact with hot mufflers, cylinders, cooling fins or hot exhaust gases as this may

result in severe burns.

5. Never tamper with governor spring, governor links or other components which may increase the speed (RPM)

of the engine.

6. Do Not operate pressure cleaners in the presence of flammable vapors or gases. When servicing pressure

cleaning equipment, be sure to properly dispose of any flammable materials.

7. Do Not make adjustments to your equipment without first removing the spark plug.
8. When transporting pressure cleaners, the fuel shut-off valves must be in the closed position, to prevent fuel

from spilling out.

MISCELLANEOUS SAFETY PRECAUTIONS

1. Check all high pressure hose and fittings periodically for cuts or wear. Immediately replace all suspect

components to prevent injury. Do not place high pressure hose on the engine muffler or drag across abrasive surfaces.

2. Inspect pressure cleaner for oil, fuel and/or water leaks.
3. Operate unit on level surface only. Otherwise fuel may spill on engine and/or pump. Lubrication may be

insufficient if unit is not level.

4. Never start power washers without adequate water supply.
5. HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY Never point or aim the gun/wand at yourself or anyone

else. Never put your hand, fingers or body directly in front of the spray nozzle.

6. Do Not run the unit for longer that 2 minutes with spray gun in the closed position.
7. Clean up spilled soap, fuel or oil immediately to avoid falls.
8. Keep clutter out of work area to avoid falls.
9. 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.

10. Never attempt to use power washers on or near any electrical outlets, fuse boxes, transformers, high voltage

wires, etc. Severe electrical shock or death may occur.

11. Do not use the appliance if important parts of appliance are damaged, e.g. safety devices, high pressure hoses,

trigger gun.

12. WARNING! Suds or soap powder are the only cleaning scour designed for this appliance. The use of other

cleaning agent or chemicals may adversely affect the safety of appliance.

13. Only use genuine pressure cleaning equipment parts (eg.: High pressure hoses, fittings and couplings etc. ) for

Electric Pressure Washer

any repairs of your pressure cleaner. Failure to do so may result in injury or cause hazardous operating conditions
to exist.

WATER SUPPLY (Cold Water Only)

Water hose must be at least 3/4 inch in diameter.

Flow rate of water supply must be more than 1MPa.

The water supply temperature must not exceed 147.6

℉

(50

℃

Never use water contained with solvents, e.g. paint thinners, gasoline, oil, etc.

Always prevent debris from being drawn into the unit by using a clean water source.

We strongly recommend that this high pressure washer should not be left running without the trigger gun being

engaged for more than 2 minutes or longer.

CAUTION

Follow the maintenance instructions specified in the manual.

4. Explanation of safety labels

Reading

instruction

manual

carefully before

using the

machine

Wear eye and ear protection

Never point nozzle on or near any

electrical connections, electrical

outlets or fixtures, etc. Severe

electrical shock or death may

occur! Never point nozzle at people

or animals

Guaranteed sound

power level: 112dB(A)

5. Operation

Caution! The powerful spray from your pressure washer is capable of causing damage to surfaces such as: wood,
glass, automobile paint, auto striping and trim, and delicate objects such as flowers and shrubs. Before spraying,
check the item to be cleaned to assure yourself that it is strong enough to resist damage from the powerful spray.

Operating unit with water supply shut-off without flow of water will result in equipment damage. Operating the
pressure washer with water supply shut-off will void your warranty. You should never run this pressure washer for
more than 2 minutes without pulling the trigger to allow cool water to enter the pump.

WARNING!

Read owner’s Manual. Do not operate equipment until you have read Owner’s Manual for Safety,

Operation, and Maintenance Instruction.

Owner’s Manual

5.1 Assembly

Step1. Attach the handles to the frame of the pressure washer. Insert bolts and tighten with knobs.
Step 2. For the machines with hose reel: Attach the hose reel to the handle of the machine. Align holes insert

bolts, and tighten with screws.

Step 3.    Attach the wand to the spray gun. Tighten securely.
Step 4.    Attach the high pressure hose to the spray gun. Tighten securely.
              For the machines with hose reel: attach the long hose of the hose reel to the gun.

Step1 Step 2 Step 3 Step 4
5.2 Operating Procedures (Start-Up)

ATTENTION: Become familiar with the operating procedures before starting your unit.

Add fresh high quality unleaded gasoline. See Engine Operator’s Manual for correct amount and type.

Check oil level. See Engine Operator’s Manual for correct amount and type.

Connect high pressure hose to pump outlet. (see picture 1)

Connect water source to pump inlet. There is plastic tap connector equipped with pump, connect your
own connector to it, and screw tightly. (see picture 2)

picture 1

picture 2

NOTE 1: Never pull the hose to move the unit. This could damage hose and/or pump inlet.
NOTE 2: Water source must provide a minimum of 0.2Mpa.Inlet hose can connected to the water main with Max.
inlet pressure 1MPa.
NOTE 3: Use cold water only and water’s temperature shall not exceed 147.6

℉

(50

℃

Insert the chemical hose into the chemical liquid container. See figure 3

Figure 3

Chemical hose

Electric Pressure Washer

If your machine have interchangeable nozzles (see next point), make sure using the black one, soap
nozzle is installed. Soap injectors will not work when high pressure nozzles are installed.
If your machine have an adjustable nozzle (see next point), be sure it is in the low pressure position to
draw soap.
WARNING! Suds or soap powder are the only cleaning scour designed for this appliance. The use of
other cleaning agent or chemicals may adversely affect the safety of appliance.

The machine will be supplied with interchangeable spray nozzles or adjustable nozzle
for interchangeable spray nozzles :
The black nozzle lowers your pressure and draws chemical (no mark on it). The other nozzles are for
high pressure rinse at different spray angles. Red is 0 degree, yellow is 15 degree, green is 25 degree and
white is 40 degree. Be sure the nozzle is fully engaged before press the trigger gun. Failure to do may result in
the nozzle becoming a projectile and may be lost or damage to property or persons may occur.

Red yellow green white black
0° 15° 25° 40° detergent

Install the nozzle :

step 1 pull back the connector of spray gun (in front of spray gun), then inserter the nozzle into connector

step 2 release the connector, the connector will forward and nozzle will be caught.

step 1 step 2

How to selector the high pressure nozzle:

A. 0 DEGREE- BLASTING

•

Removing caked on mud from heavy construction, farm or lawn equipment.

•

Cleaning tar, glue or stubborn stains from concrete.

•

Cleaning overhead areas.

•

Removing rust from steel and oxidation from aluminum.
B. 15 DEGREE- STRIPPING

•

Removing paint from wood, masonry or metal.

•

Removing grease or dirt from equipment.

•

Removing heavy mildew stains.

connector

Owner’s Manual

•

Removing marine growth from boats and marine equipment.

•

Removing rust from steel and oxidation from aluminum.
C. 40 DEGREE- WASHING

•

Light cleaning and washing.

•

Washing and rinsing of automobiles and boats.

•

leaning roofs, windows, patios and driveways.

The operating pressure and flow for each nozzle

0 degree

15 degree

25 degree

40 degree detergent

Nozzle

Operating

Pressure

25MPa

0.7±0.2M

Operating Flow

13.5 l/min

13.5 l/min 15l/min

For adjustable nozzle :
If your machine is supplied with an adjustable nozzle, the spray nozzle can be changed by rotating the
outer shell to get a suitable spary degree within 57.6~129.6

℉

~40

℃

)

. The nozzle also will move

forward and backward. The nozzle must be pulled back toward the gun for high pressure rinse. When
the nozzle is moved forward you will have low pressure appoximately 1.73MPa (250PSI) and the soap
injector will start to draw chemical.

Turn water source on

5.3 Operation:

NOTE: Do not let hoses come in contact with the HOT engine muffler during or immediately after use, as this will
destroy the hose.

1) lift the trigger safety lock, and then you can press the trigger.

adjustable

nozzle

spray gun

Electric Pressure Washer

  2) Start engine according to the engine owner’s manual.
  3) Press the trigger of high pressure gun to make sure water flowing out.
      In emergency condition: Turn engine off.

5.4 Shut Down Procedure

Release the trigger can stop the water flowing out. After did this, pls. engage the trigger safety lock to
avoid accidental “switch on”. Be careful when release the trigger gun, it has sudden recoil force about
28MPa for GW5401(C) series.

In emergency condition: turn engine off immediately .
2.

Turn engine off. See Engine Owner’s Manual. NOTE: NEVER turn the water off with the engine running.

Turn water source off.

Press trigger to release residual water.

Disconnect all hoses used

See storage section in this manual for proper storage procedures. Note: Let the engine cool and up to 30
minutes after use before touching.

5.5 Thermal Relief Valve:

If the machine is left running without the trigger gun being engaged for more than two minutes, the water
temperature will rise to a dangerous level and damage the internal components of the pump. In an effort to
prevent damage, pumps are equipped with a thermal relief valve. This valve will open when the temperature
rises too high. This valve will then release a gush of water in an effort to lower the temperature inside the
pump. Immediately after released the water, the valve will close.

5.6 THE UNLOADER VALVE

The machine is installed with one unloader, it can redirect the flow back to the inlet side of the pump when
the spray gun is closed. Without an unloader valve, dangerously high pressure will be produced when the
spray gun is closed because the water being forced out of the pump has no place to go. The unloader is used

Thermal relief valve

Owner’s Manual

as a safety device to guard against failure of pump parts, and the development of dangerously high
pressures.

6. Maintenance and Cleaning :

When doing maintenance, you may be exposed to hot surfaces, water pressure, moving parts, or fire resulting

in death. Before performing any maintenance or repair, disconnect power source, let engine cool down
completely and release all water pressure. The engine contains flammable fuel. Do not smoke or work near open
flames while performing maintenance.

Nozzle cleaning:

If the nozzle becomes clogged with foreign materials, such as dirt, excessive pressure may develop. If the

nozzle becomes partially clogged or restricted, the pump pressure will pulsate. Clean the nozzle immediately
using the nozzle kit and the following instructions.

Wand/Lance:

Shut off the pressure washer and turn off the water supply.

Disconnect the wand/lance from the gun.

Clean the nozzle using the nozzle cleaner provided or a straightened paper clip. Inset into the nozzle end
and work back and forth until obstruction is removed.

Direct water supply into nozzle end to back flush loosened particles for 30 seconds.

Reconnect wand/lance to gun and turn on water supply.

Start pressure washer.

7. Storage:

Before you store the pressure washer, make sure you do the cleaning for the machine. (see clause 6), and then :

Disconnect spark plug wire and remove spark plug. See Engine Operator’s Manual for correct amount
and type.

Remove gasoline and oil from engine. See Engine Operator’s Manual for correct amount and type.

8. Troubleshooting guide

PROBLEM

CAUSE

REMEDY

Engine will not start.

No fuel.

Pressure buildup after initial
use.

Not started or chocked.

Spark plug wire not attached.

Engine ON/OFF switch in OFF
position.

Add fuel.

Squeeze gun trigger to relieve
pressure.

Pull choke of engine 3 times.

Attach spark plug wire.

Place engine ON/OFF switch in ON
position.

No or low pressure (initial

use)

1.    Wand not in high pressure.
2.    Leak at high pressure hose.
3.    Nozzle obstructed.
4.    Water filter screen clogged.

See high pressure operation.

* Repair leak. Apply Teflon tape if
necessary.

Clean nozzle with paper clip or
nozzle cleaning tool, pour water
into nozzle end to flush out
obstruction.

Remove and clean filter

Water leaking at
gun/wand connection

1. Worn o-ring.
2. Loose hose connection.

* Check and replace.

Tighten

Electric Pressure Washer

Water leaking at pump

Loose connections.

Tighten.
NOTE: Little leaking at pump outlet is
normal.

Oil leaking at pump

Oil seals worn.

Pump overfilled.

Incorrect oil used

replaced

Check for correct amount.

* Drain and fill with correct amount
and type of oil.

* These items should be serviced by our technician or call technical center

888-896-6881

(US)

Owner’s Manual

Electric Pressure Washer

G
GW5401-02-YG

Gasket

GW5401-05-YG

Gasket

G
GW5401-11-YG

Spring Gasket

Under Frame

G
GW5401-23-YG

Spring Gasket

GW5401-24-YG

Gasket

Clip

Spring

Shaft

G
GW5401-28-YG

10” Wheel

2
2

Ring

Insert Retainer

Under Bottom Gun Hook

Battery Rubber Foot

G
GW5401-33-YG

Battery

1
2

Bolt M5x12

Gasket

Locknut M5

Plug

Wire

Battery Box Cover

Spring Shim

Bolt M6x12

4# Engine Gasket

Locknut M10

13HP Engine

6# Gun

Owner’s Manual

Electric Pressure Washer

Owner’s Manual

bot cover of crank case

GW5401-01-P-YG

GW5401-02-P-YG

GW5401-03-P-YG

GW5401-04-P-YG

GW5401-05-P-YG

GW5401-06-P-YG

GW5401-07-P-YG

GW5401-08-P-YG

GW5401-09-P-YG

GW5401-10-P-YG

GW5401-11-P-YG

GW5401-12-P-YG

GW5401-13-P-YG

GW5401-14-P-YG

GW5401-15-P-YG

GW5401-16-P-YG

GW5401-17-P-YG

GW5401-18-P-YG

GW5401-19-P-YG

GW5401-20-P-YG

GW5401-21-P-YG

GW5401-22-P-YG

GW5401-23-P-YG

GW5401-24-P-YG

GW5401-25-P-YG

GW5401-26-P-YG

GW5401-27-P-YG

GW5401-28-P-YG

GW5401-29-P-YG

GW5401-30-P-YG

GW5401-31-P-YG

GW5401-32-P-YG

GW5401-33-P-YG

GW5401-34-P-YG

GW5401-35-P-YG

GW5401-36-P-YG

GW5401-37-P-YG

GW5401-38-P-YG

GW5401-39-P-YG

GW5401-40-P-YG

GW5401-41-P-YG

GW5401-42-P-YG

GW5401-43-P-YG

GW5401-44-P-YG

GW5401-45-P-YG

GW5401-46-P-YG

GW5401-47-P-YG

GW5401-48-P-YG

GW5401-49-P-YG

GW5401-50-P-YG

oil drain plug

sheet of oil drain plug

crank case cover

slip crank case cover

oil lever lence

gasket,lence

lence cap

oil inlet plug

gasket,oil inlet plug

crank case

bolt,crank shaft cover

crank shaft cover

seal,gasket bearing cover

bearing clip

ball bearing

crank shaft

needle rotter bearing

flange ring

gasket,crank shaft

flange

bolt,flange

conne cting rod

conne cting rod pin

plunger rod

copper sheet

ceramic plunger

plunger,screw cap ring

copper sheet

pluger,screw cap ring

locating ring

location ring water seal

gasket,locating ring

u-packing ring

u-packing

u-packing seat

pressure adjusting handle cover

pressure adjusting screw

fix nut adjustment screw

pressure adjustment handle

pressure adjusting seat

fix screw,pressure adjustment

pressure adjustment

upper washer,spring

pressure adjusting spring

under washer,spring

screw,adjustment vavle

water return valve jacket

inner gasket,valve jackrt

adjustment valve seat

Description

Qty.

APA Part No.

Electric Pressure Washer

inner gasket, valve jacket

water return valve corn

water return valve jacket

outer gasket valve jacket

water return vlave seat

gasket, valve seat

water outlet tee connector

gasket, tee connector

fix bolt outlet tee connector

bolt sheet

gasket, fix bolt

gasket, outlet tee connector

cylinder

screw seal

inlet screw cap

inlet tee connector

gasket

inlet tee connector seal

water inlet tee connector

gasket, inlet tee connector

gasket, inlet screw

inlet screw

gasket, water inlet connector seal

gasket, water outlet joint

spring water outlet cone valve

water outlet cone valve

gasket water outlet cone valve

gasket, check valve

washer check valve

check valve flake

spring check valve

check valve box

gasket compaction cap seal

check valve compaction cap

sheet

bolt cylinder

water inlet connector

quick connector cap

bearing clip

gasket, quick connector seal

quick connector

steel ball

detergent injector

spring, injector

gaksket, detergent injector

steel ball

injector nozzle

water shooting nozzle

water outlet joint

GW5401-51-P-YG

GW5401-52-P-YG

GW5401-53-P-YG

GW5401-54-P-YG

GW5401-55-P-YG

GW5401-56-P-YG

GW5401-57-P-YG

GW5401-58-P-YG

GW5401-59-P-YG

GW5401-60-P-YG

GW5401-61-P-YG

GW5401-62-P-YG

GW5401-63-P-YG

GW5401-64-P-YG

GW5401-65-P-YG

GW5401-66-P-YG

GW5401-67-P-YG

GW5401-68-P-YG

GW5401-69-P-YG

GW5401-70-P-YG

GW5401-71-P-YG

GW5401-72-P-YG

GW5401-73-P-YG

GW5401-74-P-YG

GW5401-75-P-YG

GW5401-76-P-YG

GW5401-77-P-YG

GW5401-78-P-YG

GW5401-79-P-YG

GW5401-80-P-YG

GW5401-81-P-YG

GW5401-82-P-YG

GW5401-83-P-YG

GW5401-84-P-YG

GW5401-85-P-YG

GW5401-86-P-YG

GW5401-87-P-YG

GW5401-88-P-YG

GW5401-89-P-YG

GW5401-90-P-YG

GW5401-91-P-YG

GW5401-92-P-YG

GW5401-93-P-YG

GW5401-94-P-YG

GW5401-95-P-YG

GW5401-96-P-YG

GW5401-97-P-YG

GW5401-98-P-YG

GW5401-99-P-YG

Description

Qty.

APA Part No.

Limited Warranty

Gentron® warrants to the original purchaser who uses the product in a consumer application

(personal, residential or household usage) that all products covered under this warranty are free

from defects in material and workmanship for one year from the date of purchase.

All products covered by this limited warranty which are used in commercial applications (i.e.

income producing) are warranted to be free of defects in material and workmanship for 90 days

from the date of original purchase.

Products covered under this warranty include air compressors, air tools, service parts, pressure

washers and generators.

Gentron® will repair or replace, at Gentron®’s sole option, products or components which have

failed within the warranty period. Service will be scheduled according to the normal work flow

and business hours at the service center location, and the availability of replacement parts.

All decisions of Gentron® with regard to this limited warranty shall be final.

This warranty gives you specific legal rights, and you may also have other rights which vary from

state to state.

RESPONSIBILITY OF ORIGINAL PURCHASER (initial User):

To process a warranty claim on this product, DO NOT return item to the retailer.

The product must be evaluated by an Authorized Warranty Service Center.

For the location of the nearest Authorized Warranty Service Center contact the retailer or place of

purchase.

Retain original cash register sales receipt as proof of purchase for warranty to work.

Use reasonable care in the operation and maintenance of the product as described in the

Owner’s Manual(s).

Deliver or ship the product to the Authorized Warranty Service Center. Freight costs, if any must

be paid by the purchaser.

If the purchaser does not receive satisfactory results form the Authorized Warranty Service

Center, the purchaser should contact Gentron®.

Owner’s Manual

Limited Warranty (cont’d)

THIS WARRANTY DOES NOT COVER:

• Merchandise sold as reconditioned, used as rental equipment, or floor or display models.

• Merchandise that has become damaged or inoperative because of ordinary wear,

misuse, cold, heat, rain, excessive humidity, freeze damage, use of improper chemicals,

negligence, accident, failure to operate the product in accordance with the instructions

provided in the Owner’s Manual(s) supplied with the product, improper maintenance,

the use of accessories or attachments not recommended by Gentron®, or unauthorized

repair or alterations.

• Repair and transportation costs of merchandise determine not to be defective.

• Costs associated with assembly, required oil, adjustments or other installation and

start-up costs.

• Expendable parts or accessories supplied with the product which are expected to

become inoperative or unusable after a reasonable period of use.

• Merchandise sold by Gentron® which has been manufactured by and

identified as the product of another company, such as gasoline engines. The product

manufacturer’s warranty, if any, will apply.

• ANY INCIDENTAL, INDIRECT OR CONSEQUENTIAL LOSS, DAMAGE, OR

EXPENSE THAT MAY RESULT FROM ANY DEFECTS, FAILURE OR

MALFUNCTION OF THE PRODUCT IS NOT COVERED BY THIS WARRANTY.

Some states do not allow the exclusion, so it may not apply to you.

• IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY OR

FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM

THE DATE OF ORIGINAL PURCHASE. Some states do not allow limitations on how

long an implied warranty lasts, so the above limitations may not apply to you.

Distributed by:

Universal Product Concepts inc.

www.gentronusa.com

For warranty & service, call 888-896-6881

Electric Pressure Washer

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