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Stihl RE 120 PLUS - User Manual

Stihl RE 120 PLUS
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STIHL RE 120 PLUS, 130
PLUS, 140 PLUS
Instruction Manual
2 - 24

Questions and Answers

  • A
    Alexandra MccarthyAug 19, 2025
    Why won't my Stihl RE 120 PLUS Pressure Washer start when I squeeze the spray gun trigger?
    • A
      Anthony MillerAug 19, 2025
      There are several possible reasons why your Stihl pressure washer might not start. First, check that the mains plug of the connecting cable or extension cord is properly plugged in. Another reason could be that the circuit-breaker (fuse) or the residual current circuit breaker has tripped due to an electrical overload or a fault in the circuit. If this is the case, look for the cause of the tripping, remedy it, and then engage the circuit-breaker. Also, ensure that the fuse rating of the socket is adequate and that you are using an extension cord with the correct cross-section and length. Finally, the electric motor may be too warm; allow the pressure washer to cool for 5 minutes and clean the nozzle.
  • H
    harrisdavidAug 21, 2025
    What to do if my Stihl Pressure Washer switches off while in operation?
    • H
      Heather DuncanAug 21, 2025
      If your Stihl pressure washer switches off during operation, there are a few things you can check. Make sure that the plug of the connecting cord or extension cord is securely plugged into the socket. Also, examine the circuit-breaker (fuse) or the residual current circuit breaker, as it may have tripped due to an electrical overload or a fault in the circuit. If tripped, identify and fix the cause, then re-engage the breaker. Lastly, ensure that the fuse rating of the socket is sufficient for the pressure washer's power needs.
  • R
    rgrayAug 23, 2025
    Why won't my Stihl RE 120 PLUS start when I squeeze the trigger?
    • E
      emilydavisAug 25, 2025
      If your Stihl Pressure Washer does not start even when you squeeze the spray gun trigger, there are several possible reasons. First, check if the mains plug of the connecting cord or extension cord is properly plugged in. Another reason may be that the circuit breaker or overload cutout has tripped due to an electrical overload or fault. In that case, identify and fix the cause of the tripping, then reset the breaker or cutout, and switch off other devices connected to the same circuit. Also, ensure that the socket has the correct fuse rating. If using an extension cord, make sure it has an adequate cross-section and is not too long. Finally, the electric motor may be too warm; allow the pressure washer to cool for 5 minutes and clean the nozzle.
  • D
    Dean WheelerAug 26, 2025
    What to do if detergent additive is not being drawn in Stihl Pressure Washer?
    • D
      donnahicksAug 27, 2025
      If your Stihl pressure washer is not drawing in detergent additive, first check if the container is empty and fill it with detergent. If the container is full, the nozzle of the spraying set may be blocked, so clean it.
  • C
    Christopher OchoaAug 28, 2025
    Why are connections with pressure washer, high-pressure hose, spray gun or spray lance stiff on my Stihl RE 120 PLUS?
    • J
      jacobjonesAug 28, 2025
      If the connections between your Stihl pressure washer, high-pressure hose, spray gun, or spray lance are stiff, it is likely that the gaskets of the connections have not been greased. Lubricate the gaskets to resolve this issue.
  • B
    Brandon BrownAug 30, 2025
    What to do if my Stihl RE 120 PLUS Pressure Washer switches off while in use?
    • R
      Ronald DelacruzAug 30, 2025
      If your Stihl Pressure Washer switches off during operation, there are a couple of things you should check. First, make sure that the plug of the connecting cord or extension cord hasn't been pulled out of the socket. If it has, plug it back in. Secondly, the circuit breaker or overload cutout might have tripped due to an electrical overload or a fault in the circuit. Find the cause of the tripping, fix it, and then reset the circuit breaker or overload cutout. You might also want to switch off other appliances connected to the same circuit.
  • L
    Laura MaynardSep 1, 2025
    Why is my Stihl RE 120 PLUS Pressure Washer not drawing detergent?
    • L
      lmartinezSep 1, 2025
      If the detergent additive is not being drawn in by your Stihl Pressure Washer, the first thing to check is whether the container is empty. If so, fill it with detergent. Also, the nozzle of the spraying set may be blocked, so try cleaning it.
  • C
    Chad PhillipsSep 3, 2025
    Why does the pressure working pressure fluctuate or drop on my Stihl RE 120 PLUS?
    • M
      Maria WhiteSep 3, 2025
      If the working pressure of your Stihl pressure washer fluctuates or drops, it could be due to several reasons. First, ensure that the water tap is fully open and that there is a sufficient quantity of water available. A blocked nozzle or a blocked water intake screen or water filter can also cause this issue, so clean them accordingly. If these steps don't resolve the problem, the high-pressure pump, high-pressure hose, or spray attachment may be leaking or faulty, and you should have it inspected by a STIHL servicing dealer.
  • D
    Diane JimenezSep 5, 2025
    Why is my Stihl RE 120 PLUS's high-pressure pump repeatedly switching on and off?
    • D
      Debra CookSep 5, 2025
      If the high-pressure pump on your Stihl pressure washer repeatedly switches on and off without you squeezing the spray gun trigger, this may indicate a leak in the high-pressure pump, high-pressure hose, or spray attachment. It is recommended to ask a STIHL servicing dealer to inspect the pressure washer.
  • N
    Nicole ChambersSep 8, 2025
    How to fix the shape of the water jet if it has changed on my Stihl Pressure Washer?
    • K
      Kara BishopSep 8, 2025
      If the shape of the water jet from your Stihl pressure washer has changed, it's likely due to a blocked or worn nozzle. Try cleaning the nozzle first. If that doesn't solve the problem, you may need to fit a new nozzle.

Overview

This document describes the STIHL RE 120 PLUS, 130 PLUS, and 140 PLUS high-pressure washers, providing instructions for their assembly, operation, maintenance, and safety.

The high-pressure washer is designed for cleaning vehicles, trailers, patios, paths, and facades. It is not intended for commercial use or for cleaning surfaces containing asbestos, lead paint, or those that come into contact with foodstuffs. The device should not be used in the rain.

Function Description

The high-pressure washer operates by transporting water from a water source to a spray gun via a high-pressure hose. The spray gun, when activated, releases a strong water jet through a nozzle, which can be adjusted for different cleaning tasks. The device includes a rotary switch for turning it on and off. When the spray gun trigger is released, the high-pressure pump automatically switches off, entering a stand-by mode while the machine remains switched on. Squeezing the trigger again reactivates the pump and water flow.

Usage Features

The pressure washer is equipped with several features to enhance its usability:

  • Spray Attachment: The spray gun holds and controls the spray attachment, which includes a spray lance and various nozzles.
  • Nozzles: The device comes with a rotary nozzle for strong, rotating water jets to remove stubborn dirt, and a fan-jet nozzle for a flat water jet, suitable for cleaning large areas. The fan-jet nozzle is adjustable to increase or reduce working pressure. A cleaning pin is provided for clearing clogged nozzles.
  • Spraying Set: A dedicated spraying set is used for cleaning with detergents. Detergents can be added to a bottle that attaches to the spray nozzle, enhancing the cleaning effect.
  • Hose Reel: A hose reel is integrated for rolling up the high-pressure hose, with a guide bar (on RE 130 PLUS and 140 PLUS models) to assist in guiding the hose onto the reel from the front.
  • Handle and Carrying Handle: The device features a handle for carrying and moving the high-pressure washer, and a carrying handle for transport. A trigger switch lockout blocks the adjustment of the handle.
  • Water Supply: The high-pressure washer can be connected to the mains water supply or draw water from alternative sources like water butts, storage tanks, or rivers/lakes, provided a STIHL suction set is used. A water filter can be connected to protect components from sand and dirt, especially when using non-mains water sources.
  • Storage Compartments: The device has compartments and holders for storing supplied nozzles, the cleaning pin, the spray gun, the spray attachment, and the spraying set. A flap covers the nozzles, connecting cord, and cleaning pin.
  • Connecting Cable: The connecting cable connects the high-pressure washer to the mains plug, which then connects to a socket. A clip attaches the mains plug to the coiled connecting cable, and holders allow for easy removal and storage of the cable.
  • Safety Features: The spray gun includes a retaining latch to release the trigger and a locking lever to secure the connector.

Maintenance Features

Regular maintenance is crucial for the safe and efficient operation of the high-pressure washer:

  • Cleaning: The pressure washer, high-pressure hose, spray gun, and accessories should be cleaned with a damp cloth. Connectors, couplings, and vents also require cleaning. Nozzles should be rinsed under running water and dried, and clogged nozzles can be cleared with the cleaning pin. The water intake screen and water filter should be regularly checked for dirt and cleaned by flushing under running water. The water filter can be disassembled for thorough cleaning.
  • Lubrication: The gaskets of the connections should be greased with grease for fittings to ensure smooth operation and prevent stiffness.
  • Storage: After use, the pressure washer should be stored in a clean, dry, and frost-free environment, out of reach of children. The high-pressure hose and spray attachment should be drained. If storing in a non-frost-free environment, the pressure washer should be protected with a glycol-based antifreeze. The detergent container should be emptied or secured to prevent spillage.
  • Transport: Before transport, the spray gun trigger should be locked, the pressure washer switched off, and the mains plug unplugged. The spraying set should be drained or secured. The pressure washer should be secured with lashing straps, belts, or a net to prevent movement or toppling.
  • Repair: Users are advised not to attempt repairs themselves. Any damaged components or malfunctions should be addressed by a STIHL servicing dealer.
  • Accessory Maintenance: Accessories like the spray lance extension, surface cleaner, pipe cleaning kit, angled spray lance, and angled nozzle should be maintained according to their respective instruction manuals.

Stihl RE 120 PLUS Specifications

General IconGeneral
Max Pressure120 bar
Weight11.5 kg
Hose Length1.5 m
Power Supply230 V
Operating pressure120 bar
Maximum pressure120 bar
Maximum water temperature40 °C
Power cable length5 m
Power SourceElectric

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