Stihl RE 119 - User Manual

Questions and Answers

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zimmermanjustinAug 20, 2025
Why does my Stihl RE 119 Pressure Washer pressure fluctuate or drop?
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  Kenneth UnderwoodAug 20, 2025
  If the pressure fluctuates or drops in your Stihl Pressure Washer, it could be due to several reasons. First, ensure that the water supply is sufficient by completely opening the water tap and complying with the permissible suction lift if you are using suction mode. Check and clean the high-pressure nozzle in the spray head, the water intake strainer in the pump inflow, or the nozzle, as they might be dirty or clogged. If the issue persists, the high-pressure pump may be leaky, or the valves may be defective.
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Colleen Knox DVMAug 22, 2025
How to fix a Stihl RE 119 motor that hums but doesn't run?
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  Christopher Davis Jr.Aug 22, 2025
  If your Stihl Pressure Washer's motor hums but doesn't run when switched on, it could be due to several reasons. Ensure the mains voltage is adequate and the electrical connections, plug, cable, and switch are in good condition. If you're using an extension cord, make sure it has a sufficient cross-section and isn't too long. Also, check if the mains circuit-breaker has been tripped—if so, switch off the machine, actuate the spray gun until water only drips out, engage the safety catch, and then reset the circuit-breaker. Finally, make sure to actuate the spray gun when switching on the machine.
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Lauren MooreAug 25, 2025
Why does my Stihl RE 119 Pressure Washer motor keep switching on and off?
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  George HallAug 25, 2025
  If the motor of your Stihl Pressure Washer constantly switches on and off, it's possible that the high-pressure pump or spray attachment is leaky.
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William FranklinAug 27, 2025
What to do if my Stihl RE 119 engine stops?
- D
  Daniel BerryAug 27, 2025
  If your Stihl Pressure Washer engine stops, it might be due to the motor overheating. Ensure that the supply voltage matches the machine voltage. Allow the motor to cool down for at least 5 minutes before restarting.
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Scott Estes Jr.Aug 28, 2025
Why is my Stihl RE 119 Pressure Washer not dispensing detergent?
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  richardmorrisonAug 28, 2025
  If your Stihl Pressure Washer is not supplying detergent, check if the detergent tank is empty and fill it if necessary. Also, inspect the detergent intake for any clogs and eliminate them.
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Stephen WhitakerAug 30, 2025
How to troubleshoot a Stihl Pressure Washer when the motor hums but doesn't run?
- J
  James RobertsAug 30, 2025
  If the motor of your Stihl Pressure Washer does not run but hums when switched on, it could be due to several reasons. First, check the electrical connection, plug, cable, and switch, as the mains voltage might be too low or improper. If you're using an extension cord, ensure it has a sufficient cross-section. Avoid overly long extension cords; try connecting the machine directly or with a shorter cord. Also, the mains circuit-breaker might have tripped. In this case, switch off the machine, actuate the spray gun until water only drips out, engage the safety catch, and reset the breaker. Finally, make sure to actuate the spray gun when switching on the machine.
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ryoungSep 1, 2025
What to do if my Stihl RE 119 is not dispensing detergent?
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  Derek SmithSep 1, 2025
  If your Stihl Pressure Washer is not supplying detergent, the detergent tank might be empty; refill it. Also, the detergent intake could be clogged, so eliminate any blockage.
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david50Sep 3, 2025
Why does my Stihl RE 119 engine keep stopping?
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  Dana FigueroaSep 3, 2025
  If the engine of your Stihl Pressure Washer stops, the machine might be switching off because the motor is overheating. To resolve this, check whether the supply voltage and machine voltage match. Allow the motor to cool down for at least 5 minutes.
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Robert GloverSep 5, 2025
How to fix weak jet on Stihl Pressure Washer?
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  Nicole BoyerSep 5, 2025
  If the jet from your Stihl Pressure Washer is weak, ragged, or unclean, the nozzle may be fouled. Clean the nozzle following the instructions in the "Maintenance" section.
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emillsSep 7, 2025
Why does the pressure fluctuate or drop on my Stihl RE 119 Pressure Washer?
- D
  Diana EvansSep 7, 2025
  If you notice the pressure from your Stihl Pressure Washer fluctuating or dropping, several factors could be responsible. Ensure that the water supply is adequate by fully opening the water tap and complying with the permissible suction lift, especially in suction mode. Inspect the high-pressure nozzle in the spray head for dirt and clean it if necessary. Also, check the water intake strainer in the pump inflow for clogs and clean it. If the high-pressure pump is leaky or the valves are defective, have the machine checked by a servicing dealer.

Summary

Safety Precautions and Working Techniques

General Warnings and Notices

Explains warning and notice symbols and their risks.

Operator and Machine Suitability

Electrical Connection Safety

Precautions for electrical connections and extension cords.

Operation and Cord Management

Safe handling of cords and general operation rules.

Assembling the Unit

Transporting the Unit

Connecting Components

Power Supply and Startup

Connecting to Power Supply

Guidelines for electrical connections and extension cords.

Operation and Detergent Use

Adding and Rinsing Detergent

Maintenance and Repairs

Maintenance Schedule and Tasks

Specifications

Version and Electrical Specifications

Hydraulic Specifications

Provides working pressure, water feed, and kickback force data.

Troubleshooting

Motor and Spray Gun Issues

Solutions for motor not running or spray gun not actuating.

Jet Quality and Pressure Fluctuations

Remedies for weak jets, pressure drops, or dirty nozzles.

Detergent Supply Problems

Solutions for no detergent supply due to empty tank or clog.

Stihl RE 119 Specifications

General

Power Output	2.1 kW
Operating Pressure	125 bar
Maximum Pressure	135 bar
Water Throughput	500 L/h
Maximum Water Supply Temperature	40 °C
Hose Length	8 m
Power Consumption	2.1 kW
Power Cable Length	5 m
Water Flow	500 l/h