Stihl RE 170 PLUS - User Manual

Questions and Answers

S
Sheena FryeAug 18, 2025
Why won't my Stihl RE 170 PLUS start?
- F
  francesmartinezAug 18, 2025
  If your Stihl pressure washer doesn't start, even when the spray gun trigger is pressed, several issues could be the cause. First, ensure the connecting cord or extension cord is properly plugged in. Check the circuit-breaker (fuse) or earth-leakage circuit breaker, resolving any electrical overloads or defects, and switch off other electrical consumers on the same circuit. The fuse rating of the socket might be too low, so use a socket with the correct rating. Confirm that the extension cord has the correct cross-section and length. Finally, the electric motor may be too warm; let the pressure washer cool down for 5 minutes and clean the nozzle.
N
Nancy GrayAug 20, 2025
Why won't my Stihl RE 170 PLUS start even when the trigger is pressed?
- R
  ronald12Aug 20, 2025
  Your Stihl pressure washer might not start even when the trigger is pressed due to several reasons: * The connecting cord or extension cord might not be properly plugged in; ensure they are securely connected. * A tripped circuit-breaker or earth-leakage circuit breaker may be the cause. Reset the breaker and reduce the electrical load on the circuit. * The socket's fuse rating may be too low; use a socket with the correct rating. * An incorrect cross-section or excessive length of the extension cord can also prevent starting; use an extension cord with the correct specifications. * The motor may be too warm; allow it to cool for 5 minutes and clean the nozzle.
Y
ysolomonAug 23, 2025
Why does my Stihl RE 170 PLUS Pressure Washer motor buzz but not start?
- J
  James CohenAug 23, 2025
  If your Stihl pressure washer's electric motor buzzes but doesn't start, it could be due to: * Low mains voltage. Try pressing and holding the spray gun trigger while switching on the pressure washer. Also, switch off other devices connected to the same circuit. * Using an extension cord with an incorrect cross-section. Ensure you are using an extension cord with an adequate cross-section. * The extension cord being too long. Use an extension cord of the correct length.
B
Benjamin CruzAug 26, 2025
Why does the pressure fluctuate on my Stihl RE 170 PLUS?
- M
  Mrs. Melody Murray MDAug 26, 2025
  If the working pressure of your Stihl pressure washer fluctuates or drops, it could be due to several reasons. First, check for a water shortage by fully opening the water tap and ensuring a sufficient water supply. A blocked nozzle can also cause this issue, so clean it thoroughly. Additionally, inspect the water intake screen and water filter for blockages and clean them if necessary. If these steps don't resolve the problem, the high-pressure pump, high-pressure hose, or spray attachment may be leaking or defective, and you should have a STIHL servicing dealer check the pressure washer.
B
Brian McguireAug 27, 2025
Why is my Stihl Pressure Washer not drawing detergent?
- D
  Darryl YoungAug 27, 2025
  If your Stihl pressure washer is not drawing in additional detergent, the detergent container might be empty, so fill it with detergent. Also, the fan jet nozzle might not be turned in the correct direction, so turn it fully. If neither of these steps works, the Venturi nozzle might be worn, and you should have the tool repaired by a STIHL servicing dealer.
X
xbrowningAug 30, 2025
What to do if my Stihl Pressure Washer switches off during use?
- G
  Gregory MillerAug 30, 2025
  If your Stihl pressure washer shuts off while you're using it, there are a couple of things to check: * Make sure the plug of the connecting cord or extension cord is fully inserted into the socket. * The circuit-breaker or earth-leakage circuit breaker may have tripped. Find and resolve the cause, then re-engage the breaker. Also, try switching off other electrical devices on the same circuit to prevent overloading.
D
Dalton TaylorSep 1, 2025
How to fix fluctuating pressure on my Stihl RE 170 PLUS Pressure Washer?
- P
  Paul WalshSep 1, 2025
  If the working pressure of your Stihl pressure washer fluctuates or drops, consider the following: * Ensure there is an adequate water supply by fully opening the water tap. * A blocked nozzle can cause pressure issues; clean the nozzle thoroughly. * Check and clean the water intake screen and water filter, as blockages can restrict water flow. * If the high-pressure pump, hose or spray attachment are leaking, have a STIHL servicing dealer inspect the pressure washer.
G
Gerald AverySep 3, 2025
What to do if my Stihl RE 170 PLUS motor buzzes but doesn't start?
- J
  Jennifer RobertsSep 3, 2025
  If your Stihl pressure washer motor buzzes but doesn't start, it could be due to a few reasons. The mains voltage might be too low, so press and hold the trigger of the spray gun while switching on the pressure washer, and switch off other loads connected to the same circuit. Also, the extension cord might not have the correct cross-section or could be too long, so ensure you are using an extension cord with an adequate cross-section and correct length.
M
marciascottSep 5, 2025
How to fix Stihl RE 170 PLUS water jet if it has changed shape?
- M
  Michele SinghSep 6, 2025
  If the water jet shape of your Stihl pressure washer has changed, it's likely due to a blocked or worn nozzle. Try cleaning the nozzle first. If the issue persists, the nozzle may be worn and require replacement.
M
Mrs. Angela MillerSep 8, 2025
Why does my Stihl RE 170 PLUS Pressure Washer pump cycle on and off?
- R
  Robert FreemanSep 8, 2025
  If the high-pressure pump of your Stihl pressure washer switches on and off repeatedly without the trigger being pressed, it indicates a leak in the system. The high-pressure pump, high-pressure hose, or spray attachment may be leaking. In this case, you should ask a STIHL servicing dealer to check the pressure washer.

Summary

Introduction

Guide to Using this Manual

2.1 Applicable documents

Details relevant documents for safe operation and reference.

2.2 Warning Notices in Text

Explains the meaning of DANGER, WARNING, and NOTICE symbols used in the manual.

2.3 Symbols in Text

Explains symbols used within the instruction manual for better understanding.

Overview

3.1 Pressure washer

Provides a labeled diagram and description of the pressure washer's main parts.

3.2 Spray attachment

Details the components of the spray attachment, including lance and nozzles.

Safety Precautions

4.1 Warning symbols

Explains the meanings of various warning symbols related to safety on the pressure washer.

4.2 Intended use

Defines the proper and improper uses of the pressure washer to prevent injury or damage.

4.3 Requirements concerning the User

Outlines the necessary qualifications and conditions for the user operating the pressure washer.

4.4 Clothing and equipment

Specifies the required protective clothing and equipment for safe operation.

4.5 Work area and surroundings

Provides guidelines for maintaining a safe work area, keeping bystanders and children clear.

4.6 Safe condition

Lists the conditions that must be met for the pressure washer to be considered in a safe operating state.

4.7 Operation

Details safe operating procedures, including user posture, fatigue, and handling of the machine.

4.8 Detergents

Provides safety advice and precautions when using detergents with the pressure washer.

4.9 Connecting the water supply

Explains how to safely connect the pressure washer to a water source, including backflow prevention.

4.10 Connecting to the power supply

Details safe procedures for connecting the pressure washer to the electrical power supply.

4.11 Transport

Provides instructions and warnings for safely transporting the pressure washer.

4.12 Storage

Offers guidelines for safely storing the pressure washer, considering safety and environmental factors.

4.13 Cleaning, servicing and repairs

Outlines safety precautions to be taken before cleaning, servicing, or repairing the pressure washer.

Safety instructions - Accessories

5.1 Spray lance extension, surface cleaner, pipe cleaning kit, angled spray lance and angled nozzle

Safety warnings and instructions for using specific pressure washer accessories.

Preparing the pressure washer for operation

6.1 Making the pressure washer ready for use

Lists the essential steps to perform before starting the pressure washer for operation.

Assembling the pressure washer

7.1 Assembling the pressure washer

Instructions for inserting nozzles and cleaning pins into the pressure washer.

7.2 Pulling out and pushing in the handle

Details on how to extend and retract the handle of the pressure washer.

7.3 Attaching and removing the spray gun

Step-by-step guide on how to connect and disconnect the spray gun.

7.4 Attaching and removing the spray lance

Instructions for securely attaching and detaching the spray lance to the spray gun.

7.5 Attaching and removing the nozzle

Steps for fitting and removing different nozzles onto the spray lance.

Connecting to a water source

8.1 Connecting the pressure washer to the water supply

Guidance on connecting the pressure washer to a tap and using a water filter.

8.2 Connecting the pressure washer to another water supply

Instructions for drawing water from alternative sources like water butts or cisterns.

Connecting the pressure washer to the power supply

9.1 Connecting the pressure washer to the power supply

Details on how to connect the pressure washer to an electrical outlet.

Switching the pressure washer on and off

10.1 Switching on the pressure washer

Steps for safely turning on the pressure washer using the rotary switch.

10.2 Switching off the pressure washer

Instructions for correctly turning off the pressure washer.

Operating the pressure washer

11.1 Holding and controlling the spray gun

Guidance on how to properly hold and control the spray gun for effective cleaning.

11.2 Unrolling the high-pressure hose

Instructions for safely unrolling the high-pressure hose to prevent damage.

11.3 Setting the working pressure and the water flow rate

How to adjust the rotary control for desired working pressure and water flow.

11.4 Pressing and locking the spray gun lever

Steps for operating the spray gun trigger and locking it for safety.

11.5 Cleaning

Information on selecting and using different nozzles for cleaning various surfaces.

11.6 Working with detergent

Detailed instructions on using detergents, including suction and concentration.

11.6.1 Suction of detergent

Steps for drawing detergent into the pressure washer from its container.

11.6.2 Suction of detergent from separate detergent container

Guidance on using a separate container for detergent suction.

11.6.3 Working with detergent

Instructions for adjusting detergent dosage and applying it.

11.6.4 Measuring and calculating the detergent concentration

Methods for accurately measuring and calculating detergent concentration for optimal cleaning.

After Finishing Work

12.1 After finishing work

Steps to follow after completing the cleaning task, including shutting down and disconnecting.

12.2 Protecting the pressure washer with antifreeze

Instructions for protecting the pressure washer from frost damage using antifreeze.

Transporting

13.1 Transporting the pressure washer

Guidelines for safely transporting the pressure washer, including securing it in a vehicle.

Storing

14.1 Storing the pressure washer

Recommendations for proper storage of the pressure washer to ensure its longevity.

Cleaning

15.1 Cleaning the pressure washer and accessories

Instructions for cleaning the main unit, hose, spray gun, and accessories.

15.2 Cleaning nozzle and spray lance

Steps for cleaning the nozzle and spray lance, including unclogging.

15.3 Cleaning the water intake screen

Procedure for cleaning the water intake screen to maintain water flow.

15.4 Cleaning the water filter

Detailed instructions on disassembling and cleaning the water filter.

Maintenance

16.1 Maintenance intervals

Recommended maintenance schedule and intervals for upkeep.

Repairing

17.1 Repairing the pressure washer

Information on when and how to seek professional repair services for the unit.

Troubleshooting

18.1 Correcting faults in the pressure washer

A guide to diagnosing and fixing common problems with the pressure washer.

18.2 Greasing the gaskets

Instructions on how to grease gaskets for proper sealing and function.

Specifications

19.1 Pressure washer STIHL RE 150 PLUS

Technical specifications for the STIHL RE 150 PLUS model.

19.2 Pressure washer STIHL RE 170 PLUS

Technical specifications for the STIHL RE 170 PLUS model.

19.3 Extension Cords

Requirements for using extension cords with the pressure washer.

19.4 Sound and vibration values RE 150 PLUS, 170 PLUS

Details sound and vibration emission values for the pressure washer models.

19.5 REACH

Information regarding the REACH regulation compliance for chemical substances.

Spare Parts and Accessories

20.1 Spare Parts and Accessories

Information on genuine STIHL replacement parts and accessories.

Disposal

21.1 Disposing of the pressure washer

Guidance on environmentally responsible disposal of the pressure washer and its components.

EC Declaration of Conformity

22.1 Pressure washers STIHL RE 150 PLUS, 170 PLUS

Declaration of conformity for the STIHL RE 150 PLUS and 170 PLUS pressure washers.

Stihl RE 170 PLUS Specifications

General

Form factor	Upright
Hose length	- m
Cable length	5 m
Power source	Electric
Product color	Black, Orange
Pump material	Aluminum
Detergent tank	-
Maximum flow rate	648 l/h
Minimum flow rate	570 l/h
Sound power level	85 dB
Vibration emission	2.4 m/s²
Working pressure (max)	180 bar
Working pressure (min)	150 bar
Maximum water temperature	60 °C
AC input voltage	230 V
Power consumption (typical)	- W