Landa PG Series User manual

8.913-910.0 - A (10/20)
OPERATOR’S MANUAL
■ PG4-2000 ■ PG4-3500 ■ PG4-4000E ■ PG5-3500E
PG
For technical assistance or the dealer nearest you,
consult our web page at www.landa.com
CAUTION
NeverUse
:
•Bleach, chlor ine products and other corrosivechemicals
•Liquids containing solvents (i.e. paint thinner,gasoline,oil)
•Tri-sodium phosphate products
•Ammonia products
•Acid-based products
Thesechemicals will har m the unit and will damage the
surfacebeing cleaned.
Usemanufacturer's detergents as recommended inmanual
READOWNER'S MANUAL BEFORE OPERATION.
LIRELE MANUEL D'UTILISATEUR AVANT USAGE.
VORINBETRIEBNAHME UNBEDINGT
BEDIENUNGSANLEITUNGDURSCHLESEN.
NOUTILIZAR SIN ANTES NO HABER LEIDO EL MANUAL.
CHAUD!

3
CONTENTS
LANDA PG 8.913-910.0
Model Number ______________________________
Serial Number ______________________________
Date of Purchase ____________________________
The model and serial numbers will be found on a decal attached
to the pressure washer.You should record both serial number and
date of purchase and keep in a safe place for future reference.
Introduction & Important Safety Information 4-5
Component Identification 4-2000, 4-3500 6
Component Identification 4-4000, 5-3500 7
Assembly Instructions 8
Operation Instructions 9
Detergents & General Cleaning Techniques 10
ShutDown Instructions 11
Storage 11
Troubleshooting 12-13
Preventative Maintenance & Oil Change Charts 14
Options 15
Exploded Views, 4-2000, 4-3500 16-17
Exploded Views, 4-2000, 4-3500 Parts List 18-19
Exploded View, 4-4000, 5-3500 20-21
Exploded View, 4-4000, 5-3500 Parts List 22-23
Hose & Spray Gun Assembly & Parts List 24
Downstream Injector & Parts List 25
Specifications 26-27
Pump Exploded View and Parts List 28-29
Unloader Exploded View and Parts List 30

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
4
INTRODUCTION & IMPORTANT SAFETY INFORMATION
Thank you for purchasing this Pressure Washer.
We reserve the right to make changes at any time
without incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this pressure washer.Warning information
should be emphasized and understood. If the operator
is not fluent in English, the manufacturer’s instructions
and warnings shall be read to and discussed with
the operator in the operator’s native language by the
purchaser/owner, making sure that the operator com-
prehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
The operator must know how to stop the machine
quickly and understand the operation of all controls.
Never permit anyone to operate the engine without
proper instructions.
SAVE THESE INSTRUCTIONS
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and
serial number. Use only identical replacement parts.
This machine is to be used only by trained operators.
IMPORTANT SAFETY
INFORMATION
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.
WARNING: To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1. Read the owner's manual
thoroughly. Failure to follow instruc-
tions could cause malfunction of
the machine and result in death,
serious bodily injury and/or prop-
erty damage.
2. Know how to stop the machine
and bleed pressure quickly. Be thoroughly familiar
with the controls.
3. Stay alert — watch what you are doing.
4. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling distributor for specific details.
WARNING
RISK OF
ASPHYXIATION. USE
THIS PRODUCT ONLY
IN A WELL
VENTILATED AREA.
WARNING: Risk of asphyxiation.
Use this product only in a
well ventilated area.
5. Avoid installing machines in
small areas or near exhaust
fans. Exhaust contains poi-
sonous carbon monoxide gas;
exposure may cause loss of
consciousness and may lead
to death. It also contains
chemicals known, in certain quantities, to cause
cancer, birth defects or other reproductive harm.
WARNING
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING: Risk of fire. Do not
add fuel when the product is
operating.
WARNING: Risk of explosion —
do not spray flammable liquids .
6. Do not place machine near flam-
mable objects as the engine is hot.
WARNING:This product contains chemicals known
to the state of California to cause cancer and birth
defects or other reproductive harm. Operation of
this equipment may create 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.
7. Allow engine to cool for 1-2 minutes before refuel-
ing. If any fuel is spilled, make sure the area is dry
before testing the spark plug or starting the engine.
(Fire and/or explosion may occur if this is not done.)
Gasoline engines on mobile or portable equipment
shall be refueled:
a. outdoors;
b. with the engine on the equipment stopped;
c. with no source of ignition within 10 feet of
the dispensing point; and
d. with an allowance made for expansion of the
fuel should the equipment be exposed to a
higher ambient temperature.
In an overfilling situation, additional precautions are
necessary to ensure that the situation is handled
in a safe manner.
WARNING: Risk of injury. Disconnect battery
ground terminal before servicing.
8. Transport/repair with fuel tank EMPTY or with fuel
shut-off valve OFF.

LANDA PG 8.913-910.0
5
PRESSURE WASHER
OPERATOR’S MANUAL
IMPORTANT SAFETY INFORMATION
WARNING
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING: Keep wand, hose, and
water spray away from electric
wiring or fatal electric shock may
result.
9. Do not spray water on or near
electrical components.
RISK OF EXPLOSION:
DO NOT SPRAY
FLAMMABLE LIQUIDS.
WARNING
WARNING: Flammable liquids
can create fumes which can ig-
nite, causing property damage
or severe injury.
WARNING: Risk of explosion —
Do not spray flammable liquids.
10.Keep operating area clear of all persons.
WARNING
EAR PROTECTION
MUST BE WORN
WARNING:This machine exceeds
85 db appropriate ear protection
must be worn.
WARNING
USE PROTECTIVE
EYE WEAR
AND CLOTHING
WHEN OPERATING
THIS EQUIPMENT.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne
and fly at high speeds. To avoid
personal injury, eye, hand and
foot safety devices must be
worn.
11. Eye, hand, and foot protec-
tion must be worn when using this
equipment.
TRIGGER GUN KICKS
BACK - HOLD WITH
BOTH HANDS
WARNING
WARNING: Grip cleaning wand
securely with both hands before
starting. Failure to do this could
result in injury from a whipping
wand.
12. To reduce the risk of injury,
close supervision is necessary
when a machine is used near
children. Do not allow children
to operate the pressure washer. This machine
must be attended during operation.
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.
WARNING
WARNING: High pressure devel-
oped by these machines will
cause personal injury or equip-
ment damage. Keep clear of
nozzle. Use caution when oper-
ating. Do not direct discharge
stream at people, or severe in-
jury or death will result.
13. Never make adjustments on machine while in op-
eration.
14. Be certain all quick coupler fittings are secured
before using pressure washer.
WARNING
PROTECT FROM
FREEZING
WARNING: Protect machine from
freezing.
15. To keep machine in best
operating conditions, it is
important you protect machine
from freezing. Failure to protect
machine from freezing could
cause malfunction of the
machine and result in death,
serious bodily injury, and/or property damage. Fol-
low storage instructions specified in this manual.
16. The best insurance against an accident is precau-
tion and knowledge of the machine.
WARNING
RISK OF INJURY FROM
FALLS WHEN USING
LADDER.
WARNING: Be extremely careful
when using a ladder, scaffolding
or any other relatively unstable
location. The cleaning area
should have adequate slopes
and drainage to reduce the pos-
sibility of a fall due to slippery
surfaces.
17. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
18. Do not operate this machine when fatigued or under
the influence of alcohol, prescription medications,
or drugs.
19. Inlet water must be clean fresh water and no hotter
then 90°F.
20. Manufacturer will not be liable for any changes
made to our standard machines or any components
not purchased from us.
21. Do not allow acids, caustic or abrasive fluids to pass
through the pump.
22. Never run pump dry or leave spray gun closed
longer than 1-2 minutes.
Follow the maintenance instructions
specified in the manual.

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
6
COMPONENT IDENTIFICATION - 4-2000, 4-3500
CAUTION
NeverUse
:
•Bleach, chlorine products and other corrosive chemicals
•Liquids containing solvents (i.e. paint thinner,gasoline,oil)
•Tri-sodium phosphate products
•Ammonia products
•Acid-based products
Thesechemicals will harm the unit and will damage the
surfacebeing cleaned.
Usemanufacturer's detergents as recommended in manual
READOWNER'S MANUAL BEFORE OPERATION.
LIRELE MANUEL D'UTILISATEUR AVANTUSAGE.
VORINBETRIEBNAHME UNBEDINGT
BEDIENUNGSANLEITUNGDURSCHLESEN.
NOUTILIZAR SIN ANTES NO HABER LEIDO EL MANUAL.
CHAUD!
Pump — Develops high pressure.
Starter Grip — Used for starting the engine manually.
Spray Gun — Controls the application of water and
detergent onto cleaning surface with trigger device.
Includes safety latch.
Detergent Injector — Allows you to siphon and mix
detergents.
Variable Pressure Wand — Must be connected to
the spray gun. Allows for detergent injection and lower
pressure by turning handle.
High Pressure Hose — Connect one end to water
pump discharge nipple and the other end to spray gun.
Pump Protector — Cycles water through pump when
water reaches 140°-145°F.
Note:If trigger on spray gun is released for more
than 1-2 minutes, water will leak from valve. Warm
water will discharge from pump onto floor. This
system prevents internal pump damage.
High
Pressure
Hose
Pressure Nozzle
Discharge
Nipple
Spray Gun
Variable Pressure Wand
4-3500
Inlet
Connector
Detergent
Injector
Quick
Coupler
Collar
Wand Coupler
Collar
Water Filter
Pump
Variable
Pressure
Handle
Starter
Grip
Safety Latch
Soap Nozzle
Straight Wand
4-2000
Detergent
Hose
Detergent Bucket
(not included)
Trigger
Trigger
Swivel
Connector
Unloader
Hose Hanger

LANDA PG 8.913-910.0
7
PRESSURE WASHER
OPERATOR’S MANUAL
COMPONENT IDENTIFICATION - 4-4000, 5-3500
CAUTION
NeverUse
:
•Bleach, chlorine products and other corrosive chemicals
•Liquids containing solvents (i.e. paint thinner,gasoline,oil)
•Tri-sodium phosphate products
•Ammonia products
•Acid-based products
Thesechemicals will harm the unit and will damage the
surfacebeing cleaned.
Usemanufacturer's detergents as recommended in manual
Pump Oil
Dipstick
Water Supply Hose
(not included)
Inlet
Connector
Unloader
Detergent
Bucket
(not included)
Detergent
Hose
High Pressure
Hose
Spray Gun
Trigger
Soap Nozzle Variable Pressure
Control Handle
Variable Pressure
Wand
Engine Oil
Drain
Pressure Nozzle
Quick Coupler
Water Filter
Starter
Grip
Battery Holder
for Electric Start
Models (battery
not included)
Detergent
Injector
Pressure Nozzle
Hose Hanger

LANDA PG 8.913-910.0
OPERATOR’S MANUAL
PRESSURE WASHER
8
CAUTION
NeverUse
:
•Bleach, chlorine products and other corrosive chemicals
•Liquids containing solvents (i.e. paint thinner,gasoline,oil)
•Tri-sodium phosphate products
•Ammonia products
•Acid-based products
Thesechemicals will harm the unit and will damage the
surfacebeing cleaned.
Usemanufacturer's detergents as recommended in manual
CAUTION
NeverUse
:
•Bleach, chlorine products and other corrosive chemicals
•Liquids containing solvents (i.e. paint thinner,gasoline,oil)
•Tri-sodium phosphate products
•Ammonia products
•Acid-based products
Thesechemicals will harm the unit and will damage the
surfacebeing cleaned.
Usemanufacturer's detergents as recommended in manual
ASSEMBLY INSTRUCTIONS
STEP 1: Attach a 5/8" garden hose
to inlet connector. Minimum flow
should be 6 gpm.
STEP 2: Attach high pressure hose
to discharge nipple using quick
coupler. Lock coupler securely into
place by pulling back coupler col-
lar and inserting it onto discharge
nipple, then pushing collar forward
to lock in place.
STEP 3: Attach wand to spray
gun. Attach swivel connector on
discharge hose to spray gun us-
ing teflon tape on threads. Attach
swivel connector on high pressure
hose to spray gun using teflon tape
on threads. Engage safety latch to
prevent from triggering gun.
STEP 4: Remove oil plug on top of
pressure washer pump and replace
with dipstick supplied. (This may be
installed from the factory.)
Check oil level on sight glass on
back of pump. Oil should be visible
one half way up sight glass (30W
non-detergent).
STEP 6: Fill gasoline tank and
check engine oil.
Notice: Running the engine with
a low oil level can cause engine
damage.
STEP 5: Use a group U1, 12 volt, 30 amp hour battery (garden tractor
battery). Secure U1 battery to the battery holder using the battery clamp
provided.
To reduce the possibility of sparking attach the battery cables in the fol-
lowing order. First attach the positive battery cable (red) to the positive “+”
terminal of battery. Next, attach the negative battery cable (black) to the
negative “-” terminal of the battery. To disconnect the battery remove the
cables in the opposite order as installed.
WARNING: Wear eye, hand and skin protection when handling or
connecting battery.
WARNING: Batteries generate explosive gases during normal battery
operation. DO NOT expose the battery to flame or sparks as these
gases may ignite.
WARNING: Battery fluid is highly acidic. If battery fluid contacts skin
or clothing, wash immediately with soap and water. If battery fluid
enters eye, immediately flood eye with running cold water for at least
15 minutes and get immediate medical attention.
NOTE: The battery must be capable of accepting ring terminals.
NOTE: Battery and battery cable mounting bolts and nuts are not
provided.
High
Pressure
Hose Wand
High
Pressure
Hose
Spray
Gun
Fuel
Cap
Electric Start
Models Only
Garden
Hose

LANDA PG 8.913-910.0
9
PRESSURE WASHER
OPERATOR’S MANUAL
OPERATION INSTRUCTIONS
STEP 3: Move the fuel valve lever
to the ON position.
To start a cold engine, move the
choke lever to the CLOSED position.
To restart a warm engine, leave the
choke lever in the OPEN position.
STEP 4: Open spray gun before
pulling the starter grip.
STEP 5: To start the engine pull
the starter grip lightly until you feel
resistance, then pull briskly. Return
the starter grip gently.
CAUTION: Pull trigger on spray
gun to relieve pressure if machine
does not start after one pull of
starter grip.
CAUTION: Small engines may
kick back. Do not hold starter grip
tightly in hand.
STEP 6: On models with electric
start: Turn the key to the START
position and hold it there until the
engine starts. If the engine fails to
start within 5 seconds, release the
key and wait at least 10 seconds
before operating the starter again.
NOTICE: Using the electric starter
for more than 5 seconds at a time
will overheat the starter motor and
can damage it. When the engine
starts, release the key, allowing it to
return to the ON position.
STEP 2: Read engine manual warn-
ing and operating instructions.
Pull wand coupler collar back and
insert pressure nozzle into coupler
then secure by pushing collar for-
ward to lock.
STEP 1: Turn on water at faucet
and squeeze spray gun trigger al-
lowing water to flow until a steady
stream comes out of wand. Then
install nozzle
Fuel Lever
Choke Lever
LI
RE
VORIN
BET
BEDIENUN
GSA
NOUTILIZAR SI
N
A
Engine
Key

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
10
WARNING: Some detergents
may be harmful if inhaled or
ingested, causing severe nau-
sea, fainting or poisoning. The
harmful elements may cause
property damage or severe
injury.
STEP 1: Use detergent designed
specifically for pressure wash-
ers. Household detergents could
damage the pump. Prepare deter-
gent solution as required by the
manufacturer. Fill a container with
pressure washer detergent. Place
the filter end of detergent suction
tube into the detergent container.
STEP 2: Apply safety latch
to spray gun trigger. Secure
black detergent nozzle into
quick coupler. NOTE: Deter-
gent cannot be applied using
the yellow nozzle.
STEP 3: With the motor run-
ning, pull trigger to operate
machine. Liquid detergent is drawn into the machine
and mixed with water. Apply detergent to work area.
Do not allow detergent to dry on surface.
IMPORTANT:You must flush the detergent injection
system after each use by placing the suction tube
into a bucket of clean water, then run the pressure
washer in low pressure for 1-2 minutes.
THERMAL PUMP
PROTECTION
If you run your pressure washer for 1-2 minutes without
pressing the trigger on the spray gun, circulating water
in the pump can reach high temperatures. When the
water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm
water onto the ground. This thermal device prevents
internal damage to the pump.
CLEANING TIPS
Pre-rinse cleaning surface with fresh water. Place de-
tergent suction tube directly into cleaning solution and
apply to surface at low pressure (for best results, limit
your work area to sections approximately 6 feet square
and always apply detergent from bottom to top). Allow
detergent to remain on surface 1-3 minutes. Do not
allow detergent to dry on surface. If surface appears
to be drying, simply wet down surface with fresh water.
If needed, use brush to remove stubborn dirt. Rinse at
high pressure from top to bottom in an even sweeping
motion keeping the spray nozzle approximately 1 foot
from cleaning surface. Use overlapping strokes as you
clean and rinse any surface. For best surface cleaning
action spray at a slight angle.
Recommendations:
• Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern and
distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may remove
the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash a
small area, then check the surface for damage. If
no damage is found, continue to pressure washing.
CAUTION - Never use:
• Bleach, chlorine products and other corrosive
chemicals
• Liquids containing solvents (i.e., paint thinner,
gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the machine and will dam-
age the surface being cleaned.
RINSING
It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun. Remove black soap
nozzle from the quick coupler. Select and install the
desired high pressure nozzle. NOTE: You can also stop
detergent from flowing by simply removing detergent
siphon tube from bottle.
WARNING
DETERGENTS AND GENERAL OPERATING TECHNIQUES

LANDA PG 8.913-910.0
11
PRESSURE WASHER
OPERATOR’S MANUAL
SHUTDOWN INSTRUCTIONS
CAUTION: Always store your pressure washer in a
location where the temperature will not fall below
32°F (0°C).The pump in this machine is susceptible
to permanent damage if frozen. FREEZE DAMAGE
IS NOT COVERED BY WARRANTY.
1. Stop the pressure washer, squeeze spray gun trig-
ger to release pressure.
2. Detach water supply hose and high pressure hose.
3. Turn on the machine for a few seconds, until re-
maining water exits. Turn engine off immediately.
4. Drain the gas and oil from the engine.
5. Do not allow high pressure hose to become kinked.
6. Store the machine and accessories in a room which
does not reach freezing temperatures.
CAUTION: Failure to follow the above directions will
result in damage to your pressure washer.
When the pressure washer is not being operated or is being
stored for more than one month, follow these instructions:
1. Replenish engine oil to upper level.
2. Drain gasoline from fuel tank, fuel line, fuel valve
and carburetor.
3. Pour about one teaspoon of engine oil through
the spark plug hole, pull the starter grip several
times and replace the plug. Then pull the starter
grip slowly until you feel increased pressure which
indicates the piston is on its compression stroke and
leave it in that position. This closes both the intake
and exhaust valves to prevent rusting of cylinder.
4. Cover the pressure washer 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 deposits during storage. Such
additives may be added to the gasoline in the fuel
tank of the engine, or to the gasoline in a storage
container.
After Extended Storage
CAUTION: Prior to restarting, thaw out any possible
ice from pressure washer hoses, spray gun or wand.
Engine Maintenance
During the winter months, rare atmospheric con-
ditions may develop which will cause an icing condition
in the carburetor. If this develops, the engine may run
rough, lose power and may stall. This temporary condi-
tion can be overcome by deflecting some of the hot air
from the engine over the carburetor area. NOTE: Refer
to the engine manufacturer's manual for service and
maintenance of the engine.
STORAGE
STEP 1: Remove detergent suction
tube from container and insert into
one (1) gallon of fresh water. Pull
trigger on spray gun and siphon
water for one minute.
STEP 2: Turn off engine. STEP 3: Turn off water supply and
disconnect water supply hose from
washer. CAUTION: Do not allow
pump to run without water.
STEP 4: Disconnect all hoses to
allow water to drain. Protect from
freezing.
Fuel Lever
Choke Lever
CAUTION
NeverUse
:
•Bleach, chlorine products and other corrosive chemicals
•Liquids containing solvents (i.e.paint thinner,gasoline,oil)
•Tri-sodiumphosphate products
•Ammonia products
•Acid-based products
Thesechemicals will harm the unit and will damage the
surfacebeing cleaned.
Usemanufacturer's detergents as recommended in manual

LANDA PG 8.913-910.0
PRESSURE WASHER Troubleshooting Guide
12
PROBLEM POSSIBLE CAUSE SOLUTION
LOW OPERATING
PRESSURE
Insufficient water supply. Closed
faucet
Use larger garden hose; clean inlet water
screen. Open faucet.
Old, worn or incorrect spray nozzle Match nozzle number to machine and/or re-
place with new nozzle.
Plumbing or hose leak Check plumbing system for leaks. Re-tape
leaks with teflon tape.
Faulty or mis-adjusted unloader
valve
Adjust unloader for proper pressure. Install
repair kit when needed. Note: Tampering with
the factory setting may cause personal injury
and/or property damage, and will void the
manufacturer's warranty.
Worn packing in pump Call local dealer.
Machine has been stored in freez-
ing temperatures
Thaw out machine completely, including hose,
spray gun and wand.
Slow engine RPM Call local dealer.
FLUCTUATING
PRESSURE
Worn pump valves Call local dealer.
Dirt in pump valves Call local dealer.
Pump sucking air Check all pump lines and connections.
Gasoline Engine Altitude The gasoline engine is preset for operation at
altitudes below 1000 feet above sea level. If
operated at higher altitudes, it may be neces-
sary to install a hich altitude main jet in the
carburator. Contact your local authorized
engine sales and service center for details
PRESSURE LOW
AFTER PERIOD OF
NORMAL USE
Nozzle worn Replace nozzle.
Unloader valve worn Replace unloader valve.
ENGINE WILL NOT
START OR STOPS
WHILE OPERATING
Low oil shutdown Fill engine with oil.
ENGINE IS
OVERLOADED
Nozzle partially blocked Clean nozzle.
Excessive pressure from high
engine RPM
Adjust engine throttle to lower RPM.
WATER OR OIL
LEAKING FROM
BOTTOM OF PUMP
A small amount of leaking is normal If excessive leaking occurs, call local dealer.
PRESSURE
INCREASES
WHEN SPRAY
GUN IS CLOSED
Unloader valve not operating prop-
erly
Call local dealer.
PRESENCE OF
WATER
IN PUMP OIL
Water sprayed at machine Change oil. Direct spray away from machine.
High humidity in air Check and change oil twice as often.
Piston packing worn. Oil seal worn Call local dealer.
TROUBLESHOOTING

LANDA PG 8.913-910.0
13
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
OIL SQUIRTS OUT
OF OIL CAP ON
PUMP
Pump over filled with oil Maintain oil level at red dot on sight glass at
rear of pump or at top of notch on dipstick.
ENGINE OPERATES
FOR 15 MIN. THEN
STOPS
Not enough gas or engine oil Fill tank with gas. Check oil level.
Vapor lock developed by heat of
day
Keep gas tank full to avoid vapor locking.
Obstruction in fuel filter Clean or replace fuel filter.
WATER DRIPPING
FROM UNDER
PUMP
Piston packing worn Call local dealer.
O-Ring plunger retainer worn Call local dealer.
Cracked piston Call local dealer.
OIL DRIPPING Oil seal worn Call local dealer.
WATER LEAKING
FROM PUMP
PROTECTOR
Spray gun closed with machine
running 5 minutes or longer
Open spray gun or turn off machine.
Excess water supply pressure Place a pressure regulator at end of 50' garden
hose.

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
14
PREVENTATIVE MAINTENANCE
This pressure washer was produced with the best available materials and quality craftsmanship. However, you
as the owner have certain responsibilities for the correct care of the equipment. Attention to regular preventative
maintenance procedures will assist in preserving the performance of your equipment. Contact your Landa dealer
for maintenance. Regular preventative maintenance will add many hours to the life of your pressure washer.
Perform maintenance more often under severe conditions.
MAINTENANCE SCHEDULE
Engine Oil
SAE 10W-30
Inspect Daily
Change
First month or 20 hours.
Every 100 hours or every 6 months after first month
Every 25 hours.
Every 50 hours or monthly
Filter Every 50 hours
Air Cleaner/Filter
Inspect Every 50 hours
Clean Monthly
Every 3 months
Battery Level Check monthly
Engine Fuel Filter 500 hours or 6 months
Spark Plug Maintenance 300 hours or annually
500 hours or 6 months
Clean Fuel Tank(s) Annually
Replace Fuel Lines Annually
Pump Oil
(Non foaming)
SAE 10W-40
Inspect Oil level daily
Change After first 50 hours, then every 500 hours or annually (or 3 months)
Replace High Pressure Nozzle Every 6 months
Replace Quick Connects Annually
Clean Water Screen/Filter Weekly
Replace HP Hose Annually (if there are any signs of wear)
Belts Tighten Every 6 months
Inspect/Replace Every 6 months
Clean Float/Supply Tank Every 6 months
Grease Motor Every 10,000 hours
Clean Burner Filter Monthly (more often if fuel quality is poor)
Remove Burner Soot Annually
Burner Adjustment/Cleaning Annually
Replace Burner Nozzle Annually
Descale Coil Annually (more often if required)
OIL CHANGE RECORD
Check pump oil and engine oil level before first use of your new power washer.
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last
Oil Change
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last
Oil Change
NOTE: Read engine manual for any maintenance or service questions.

LANDA PG 8.913-910.0
15
PRESSURE WASHER
OPERATOR’S MANUAL
OPTIONS
Water Jet Surface Cleaner
#30-585
Sand Blaster Pot (Carbide)
#4-011201
Sand Blaster Wand W/Probe
(Carbide)
#4-011211
Telescoping Wand, 12 Foot
#4-011012
Rotating Nozzle
#4-2023
50' Hose 3/8", 3000 PSI,
Rough Skin
#4-020350 Set of Nozzles (Packaged)
#4-651504H
50' Hose 3/8", 4500 PSI,
Rough Skin
#4-020450 O-Ring, 1/4" and 3/8"
(Packaged)
#2-0123H

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
16
EXPLODED VIEW - 4-2000, 4-3500
41
66
42
47
48
10
74
4
2
74
2
63
9
13
11
12
24
25
14
28
22
32
29
23
7
24
32
7
34
7
7
18
27
40
35
30
23
29
23
30
40 25
24
33
45
23
40
75
42
59 60
856 16
57
61
62
21
77
19
35
2
24
63
73
17
76
2
78
79
80

LANDA PG 8.913-910.0
17
PRESSURE WASHER
OPERATOR’S MANUAL
EXPLODED VIEW - 4-2000, 4-3500
6
69
68
5
70
23
22
65
26 67
23
22
52
58
53
54
50
54
72
46
51 43
44
81
49
36
15
37
31
38
39
64
3
20
71
23
22

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
18
EXPLODED VIEW - 4-2000, 4-3500 PARTS LIST
ITEM PART NO. DESCRIPTION QTY
2 8.718-980.0 Washer, 5/16" Flat, SAE 6
3 8.758-290.0 Label Label Landa W/Instruction
and Warn 1
4 8.706-655.0 Guard, Belt, PG Small, Plastic 1
(4-2000)
8.706-656.0 Guard, Belt, PG Large, Plastic 1
(4-3500)
5 9.802-066.0 Pad, Soft Rubber 2
6 9.802-819.0 Washer, 7/16" x 2-1/2", Zinc 2
7 8.718-674.0 Bolt, 3/8-16 X 2-1/4",GR8.2
Whiz Loc 8
8 9.802-811.0 Washer, 3/8" x 1-1/2", Fender 1
9 Engine Bushing, See Specifications Pages
10 Pump Bushing, See Specifications Pages
11 Engine Pulley, See Specifications Pages
12 Pump Pulley, See Specifications Pages
13 Belt, See Specifications Pages
14 8.911-286.0 Back Plate, Belt Guard, 1
PG Small (Landa Pump)
8.933-026.0 Back Plate, Belt Guard, Large 1
(PG4-3500)
15 8.900-412.0 Label, 4-3500 Lexan 1
8.900-409.0 Label, 4-2000 Lexan 1
16 Engine, See Specifications Pages
17 8.932-993.0 Cushion, Pump, Thin 1
18 9.802-125.0 Plug, 1/4" JIC 1
19 9.802-153.0 Swivel, 1/4" JIC Fem, Push-on 1
20 9.803-098.0 Hanger, Hose & Wand 1
21 9.802-154.0 Plug, Push-on, Oil Drain 1
22 9.197-003.0 Nut, 3/8" ESNA, NC 12
23 9.198-004.0 Washer, 3/8" Uss F/w Zinc 18
24 9.802-810.0 Washer, 5/8" Flat, SAE 4
25 8.718-835.0 Nut, 5/8" Jam, ESNA, NC 2
26 8.718-684.0 Bolt, 3/8" x 5" NC 2
27 8.911-289.0 Frame, PG/PE Small (4-2000) 1
8.920-223.0 Frame, Large Belt Drive 1
(4-3500)
28 8.925-055.0 Handle, Bumper, Grey 1
29 9.802-733.0 Bolt, 3/8" x 3-1/2", Tap 2
30 9.802-728.0 Bolt, 3/8" x 2" 2
31 8.900-247.0 Label, PG (Lexan) 1
32 8.754-186.0 Qh Wheel Assy, 10" Gray Steel 2
Rim W/Tube
8.758-460.0 Wheel 12 In. Rim Steel
(4-3500) (4-2000) 2
33 8.719-905.0 Bracket, Belt Tension 1
34 9.800-034.0 Label, Clear Lexan 1
ITEM PART NO. DESCRIPTION QTY
35 9.802-789.0 Nut, 3/8", Hex, NC 3
36 8.925-056.0 Grab Assy, Grey 1
37 9.802-064.0 Grommet, Rubber (4-3500) 4
(4-2000) 5
38 8.712-346.0 Nozzle, SAQCMEG 1504, 1
Yellow (4-3500)
8.712-347.0 Nozzle, SAQCMEG 2504, 1
Green (4-3500)
8.712-348.0 Nozzle, SAQCMEG 4004, 1
White (4-3500)
8.712-362.0 Nozzle, SAQC Meg 1506, 1
Yellow (4-2000)
8.712-363.0 Nozzle, SAQC Meg 2506, 1
Green (4-2000)
8.712-364.0 Nozzle, SAQC Meg 4006, 1
White (4-2000)
39 Pump, See Specifications Pages
40 9.802-811.0 Washer, 3/8" x 1-1/2" Fender 6
41 9.802-870.0 Block, Unloader, 3/8" x 3/8", 1
1.25, Steel
42 9.802-728.0 Bolt, 3/8" x 2", NC HH 2
43 8.757-653.0 Nipple steel hex 3/8" NPTF
x 3/8" BSPP 1
44 8.757-262.0 Elbow brass 1/2 SAE (M)
x 3/8 NPTF (M) 1
45 9.802-720.0 Bolt, 3/8" x 1" NC 2
46 8.757-655.0 Adapter steel 1/2 JIC (M) x 3/8
NPTF (M) 1
47 9.197-003.0 Nut, 3/8" ESNA, NC 2
48 9.802-807.0 Washer, 3/8" SAE, Flat 2
49 8.757-616.0 Elbow steel 1/2 JIC (M)
x 3/8 BSPP (M) 1
50 8.918-424.0 Hose, 3/8" x 25", 2 Wire 1
Pressure Loop
51 Unloader, See Specifications Pages
52 8.757-200.0 Adapter brass 1/2 SAE (M) x
1/2 NPTF (M) 1
53 8.757-257.0 TEE, STREET 1/2" 1
54 9.802-151.0 Swivel, 1/2" JIC Fem, Push-On 2
56 9.800-006.0 Label, Hot/Caliente 1
57 9.800-008.0 Label, Danger Cool Engine 1
58 9.802-259.0 Hose, 1/2", Push-On 15”
59 9.802-720.0 Bolt, 3/8" x 1" NC, HH 1
60 9.802-067.0 Bumper Pad, Engine 1
61 9.802-807.0 Washer, 3/8" SAE, Flat 4
62 9.197-003.0 Nut, 3/8" ESNA, NC 4
63 9.802-776.0 Nut, 5/16" ESNA 3
64 8.758-203.0 Protection pump 3/8" 145
Deg w/slnt 1
65 8.911-293.0 Bracket, Wide Foot 1

LANDA PG 8.913-910.0
19
PRESSURE WASHER
OPERATOR’S MANUAL
EXPLODED VIEW - 4-2000, 4-3500 PARTS LIST
ITEM PART NO. DESCRIPTION QTY
66 8.707-152.0 NIPPLE, 3/8", MALE,
SSTEEL 1
67 9.802-817.0 Washer, 3/8" x 1" Steel 2
68 8.706-557.0 Bellows, LEG (Boot) 2
69 8.719-091.0 Spring, Foot Compression 2
70 8.719-954.0 Tube, Foot Bolt 2
71 9.802-778.0 Nut, 5/16" Whiz Loc Flange 3
72 8.757-203.0 SWIVEL, 1/2" M-NPTF x 3/4"
GHF 1
73 9.800-049.0 Label, Manufacturer’s 1
Cleaning Solution
74 9.802-710.0 Bolt, 5/16” x 1” NC, HH 2
75 9.802-727.0 Bolt, 3/8” x 1-3/4” Tap 2
76 9.802-959.0 Key, .247 x 2.125” 1
77 9.802-254.0 Hose, 1/4” Push-On, Fuel Line 4”
78 8.932-968.0 Label, Intended For Outdoor 1
79 9.802-744.0 Bolt 10mm x 20mm HH 4
80 9.802-816.0 Washer 7/16 Lock Split 4
81 9.804-016.0 Filter Screen Washer,
Garden Hose/30MESH 1

LANDA PG 8.913-910.0
OPERATOR’S MANUAL PRESSURE WASHER
20
CHAUD!
CAUTION
Never Use
:
• Bleach, chlorine products and other corrosive chemicals
• Liquids containing solvents (i.e. paint thinner,gasoline,oil)
•Tri-sodium phosphate products
•Ammonia products
•Acid-based products
These chemicals will harm the unit and will damage the
To
Starter
EXPLODED VIEW - 4-4000, 5-3500
6
38
23
64
86 47
69
70
67
66
47
43
24
95
23
11
50
21
50
45
42
48
48
52
44
45
50
53
39
65
48
48
48
11
11
26
11
34
41
24
25
17
85
16
15
21
27
68
37
#2-01155 Assy,
Fuel Tank On PG
4-40324E, Only
Engine GX630
PG 4-40324E
Only
575
78
4a
5
75
77
7
5
96
4b
18
35
74
65
89
73
43
50
80
13
14
81
5
47
86
44
84
13
82
47
88
87
90
91
90
90
90
92
83
93
94