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Landa PG4-3500 - User Manual

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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
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
surface being cleaned.
Use manufacturer's detergents as recommended in manual
READ OWNER'S MANUAL BEFORE OPERATION.
LIRE LE MANUEL D'UTILISATEUR AVANT USAGE.
VOR INBETRIEBNAHME UNBEDINGT
BEDIENUNGSANLEITUNG DURSCHLESEN.
NO UTILIZAR SIN ANTES NO HABER LEIDO EL MANUAL.
CHAUD!

Questions and Answers

  • T
    Tyler JohnsonAug 21, 2025
    What to do if my Landa PG4-3500 Pressure Washer engine is overloaded?
    • D
      David ScottAug 21, 2025
      If your Landa Pressure Washer engine is overloaded, it could be due to a partially blocked nozzle. Clean the nozzle to resolve this. Alternatively, excessive pressure from high engine RPM could be the cause, so adjust the engine throttle to lower the RPM.
  • K
    Kyle WeeksSep 4, 2025
    What to do if oil squirts out of the oil cap on the pump of my Landa Pressure Washer?
    • B
      bradforddaleSep 4, 2025
      If oil squirts out of the oil cap on the pump of your Landa Pressure Washer, it's likely that the pump is overfilled with oil. Maintain the oil level at the red dot on the sight glass at the rear of the pump or at the top of the notch on the dipstick.
  • R
    rogersmeredithSep 2, 2025
    What to do if there is presence of water in pump oil of Landa PG4-3500?
    • J
      Jeffrey CobbSep 2, 2025
      If you notice water in the pump oil of your Landa Pressure Washer, it could be due to water sprayed at the machine (change the oil and direct the spray away from the machine) or high humidity in the air (check and change the oil twice as often).
  • H
    harpermollySep 1, 2025
    Why is the pressure fluctuating on my Landa PG4-3500 Pressure Washer?
    • R
      Regina KingSep 1, 2025
      Fluctuating pressure in your Landa Pressure Washer can stem from several causes: the pump sucking air (check all pump lines and connections), or 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 necessary to install a high altitude main jet in the carburator. Contact your local authorized engine sales and service center for details).
  • D
    Donna FisherAug 30, 2025
    Why does my Landa PG4-3500 engine not start?
    • M
      Michelle PetersonAug 30, 2025
      If your Landa Pressure Washer engine will not start, it might be due to the low oil shutdown feature. Fill the engine with oil to resolve this.
  • E
    Erin RandolphAug 29, 2025
    What to do if there is water leaking from the pump protector of my Landa PG4-3500 Pressure Washer?
    • B
      Bobby DavisAug 29, 2025
      If water is leaking from the pump protector of your Landa Pressure Washer, it could be because the spray gun was closed while the machine was running for 5 minutes or longer (open the spray gun or turn off the machine) or due to excessive water supply pressure (place a pressure regulator at the end of the 50' garden hose).
  • J
    jacksondennisAug 27, 2025
    Why is my Landa PG4-3500 losing pressure after a period of normal use?
    • M
      Madison HaysAug 27, 2025
      If your Landa Pressure Washer experiences low pressure after a period of normal use, the nozzle may be worn. In this case, replace the nozzle.
  • J
    Jeff AlvarezAug 26, 2025
    What to do if the engine is overloaded on my Landa PG4-3500?
    • M
      Michael FranklinAug 26, 2025
      If the engine of your Landa Pressure Washer is overloaded, it could be due to a partially blocked nozzle (clean the nozzle) or excessive pressure from high engine RPM (adjust the engine throttle to lower the RPM).
  • Z
    Zachary ThomasAug 25, 2025
    What to do if my Landa Pressure Washer engine will not start or stops while operating?
    • V
      Virginia JohnstonAug 25, 2025
      If your Landa Pressure Washer's engine won't start or stops during operation, it might be due to the low oil shutdown feature. Refill the engine with oil to resolve this issue.
  • K
    karencoffeyAug 23, 2025
    Why is the operating pressure low on my Landa PG4-3500?
    • M
      Marcus CowanAug 23, 2025
      Low operating pressure in your Landa Pressure Washer can be caused by several factors. It could be due to an insufficient water supply, such as a closed faucet or a garden hose that's too small. Make sure to use a larger garden hose, clean the inlet water screen, and fully open the faucet. Other potential causes include an old or incorrect spray nozzle (match the nozzle number to your machine or replace it), plumbing or hose leaks (check for leaks and re-tape with Teflon tape), a faulty or mis-adjusted unloader valve (adjust the unloader for proper pressure), the machine being stored in freezing temperatures (thaw it out completely), or slow engine RPM (it is better to call local dealer).

Summary

Introduction and Safety Information

Owner;User Responsibility

Defines user's duty to understand manual and controls before operation.

Save These Instructions

Manual should be kept with machine and used by trained operators.

General Safety Warnings

Covers asphyxiation, fire, explosion, battery safety, and fuel handling.

High Pressure Hazards and Precautions

Covers risks of high-pressure spray, injection, and nozzle clearance.

Operational Safety Practices

Includes advice on working at heights, footing, balance, and avoiding fatigue.

Component Identification - 4-2000, 4-3500

Component Identification - 4-4000, 5-3500

Assembly Instructions

Operation Instructions

Detergents and General Operating Techniques

Cleaning Tips

Advice on pre-rinsing, applying detergent, and rinsing surfaces.

Rinsing

Procedure for rinsing detergent and selecting nozzles.

Shutdown Instructions

Storage

After Extended Storage

Precautions before restarting after long periods of storage.

Engine Maintenance

Notes on engine care during winter months.

Troubleshooting

Low Operating Pressure

Addresses issues causing reduced operating pressure and their solutions.

Fluctuating Pressure

Details causes and solutions for inconsistent pressure levels.

Pressure Low After Period of Normal Use

Explains why pressure might drop after initial normal operation.

Engine Will Not Start or Stops While Operating

Provides troubleshooting steps for engine starting and running issues.

Engine is Overloaded

Identifies causes and remedies for engine overload conditions.

Water or Oil Leaking From Bottom of Pump

Diagnoses and offers solutions for leaks at the pump's base.

Pressure Increases When Spray Gun is Closed

Explains pressure buildup when the spray gun trigger is held.

Presence of Water in Pump Oil

Addresses contamination of pump oil with water and its causes.

Oil Squirts Out of Oil Cap on Pump

Troubleshoots oil spurting from the pump's oil cap.

Engine Operates for 15 Min. Then Stops

Investigates reasons for the engine shutting down after a short operating period.

Water Dripping From Under Pump

Identifies causes for water dripping from the pump assembly.

Oil Dripping

Addresses oil leaks from various parts of the machine.

Water Leaking From Pump Protector

Explains water leakage from the pump protector.

Preventative Maintenance

Options

Exploded View - 4-2000, 4-3500

Exploded View - 4-2000, 4-3500 Parts List

Exploded View - 4-4000, 5-3500

Exploded View - 4-4000, 5-3500 Parts List

Hose & Spray Gun Assembly

Specifications

LT Pump Exploded View and Parts List

VRT3 Unloader Exploded View and Parts List

Unloader Adjustment Procedures

Step-by-step guide for adjusting the unloader for optimal pressure.

Landa PG4-3500 Specifications

General IconGeneral
SeriesPG4
PSI3500
GPM4.0
EngineHonda GX390
PumpTriplex

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