Welcome to the bigboi Help Centre
Your Source for Expert Advice, Troubleshooting, and Product Information
- D-IonizR Wheelbase Instructions
- WashR Quad Manual
- WashR PRO & DUO 2 in 1 Wall Mount Manual
- WashR PRO & DUO Fixed Wall Mount Manual
- SuckR PRO+ Manual
- BlowR ChargD Manual
- BlowR Hose Reel Manual
- BlowR PRO Manual
- BlowR PRO+ Manual
- D-IonizR 1 Manual
- D-IonizR 2 Manual
- SuckR MINI Manual
- XtractR Mini Manual
- BlowR Buddi JNR Manual
- BlowR Buddi Manual
- BlowR Mini Manual
- BlowR Mini+ Manual
- SuckR PRO Manual
- WashR DUO Manual
- WashR FLO Manual
- WashR PRO Manual
- WashR PRO & DUO | How to Change Your Oil
- WashR DUO | For the TSS Version only. No water delivery when gun trigger is depressed
- WashR DUO | For the TSS Version only. The motor starts even with gun trigger is released
- WashR DUO | How to adjust your spray pressure
- WashR DUO | How to maintain your unit (Maintenance Guide)
- WashR DUO | How to setup the unit
- WashR DUO | How to start the unit
- WashR DUO | How to store the unit when not in use
- WashR DUO | How to use your nozzles correctly
- WashR DUO | Is experiencing a water leak
- WashR DUO | The motor does not start when switched on
- WashR DUO | The pressure drops during use
- WashR DUO | The pressure fluctuates
- WashR DUO | The pump is noisy
- WashR DUO | The pump is running but does not reach the working pressure
- WashR DUO | The unit has an oil leak
- WashR DUO | There is the presence of water in the oil
- WashR DUO | What is the RED cap installed in the valve manifold?
- WashR DUO | When I switch on the unit, the motor hums but does not run
- WashR DUO | How to stop the unit
- WashR DUO | How to check your oil level before use
- WashR PRO & DUO | How to Change Your Oil
- WashR PRO | What is the recommended size of the office for the foam cannon?
- WashR PRO | For the TSS Version only. No water delivery when gun trigger is depressed
- WashR PRO | For the TSS Version only. The motor starts even with gun trigger is released
- WashR PRO | How to Adjust your Spray Pressure
- WashR PRO | How to check your oil level before use
- WashR PRO | How to maintain your unit (Maintenance Guide)
- WashR PRO | How to setup the unit
- WashR PRO | How to Start the unit
- WashR PRO | How to Stop the unit
- WashR PRO | How to store the unit when not in use
- WashR PRO | How to use your Nozzles correctly
- WashR PRO | Is experiencing a water leak
- WashR PRO | Is making a beeping noise while running
- WashR PRO | Motor is still running even after releasing the trigger of the trigger gun
- WashR PRO | PCB Delete Kit Installation Instructions
- WashR PRO | Producing humming sound after turning on, and tripping the circuit breaker
- WashR PRO | Producing very low pressure?
- WashR PRO | Recommended wire gauge, AWG, if the unit will be connected to a power extension cord?
- WashR PRO | The current surged high while the WashR is starting up
- WashR PRO | The male connector connected to the inlet port is leaking?
- WashR PRO | The motor does not start when switched on
- WashR PRO | The pressure drops during use
- WashR PRO | The pressure fluctuates
- WashR PRO | The pump is noisy
- WashR PRO | The pump is running but does not reach the working pressure
- WashR PRO | The unit has an oil leak
- WashR PRO | There is the presence of water in the oil
- WashR PRO | What is the Recommended size of the orifice nozzle?
- WashR PRO | What is the RED cap installed in the valve manifold?
- WashR PRO | When I switch on the unit, the motor hums but does not run
- WashR FLO | Is the hose and gun covered by warranty
- WashR FLO | My unit is no longer turning on
- WashR FLO | My unit is not turning off
- WashR FLO | My unit turns off due to overheating
- WashR FLO | Why is my hose vibrating
- WashR FLO | Does not reach high enough pressure
- WashR FLO | How to set up your unit
- WashR FLO | Maintenance Guide
- WashR FLO | Motor refuses to start
- WashR FLO | Motor starts up but there is no working pressure
- WashR FLO | No detergent present
- WashR FLO | Output pressure varies high and low
- WashR FLO | Spray wand is leaking
- WashR FLO | The motor stops
- WashR FLO | The pump is very noisy
- WashR FLO | Water is leaking from the pump
- WashR FLO | How to turn your unit on and off
- SuckR PRO - How to sync your SuckR PRO with the XtractR KIT Remote
- SuckR PRO | How do you change your filter bag?
- SuckR PRO | How to avoid HEPA filter Issues
- SuckR PRO | How to setup the unit?
- SuckR PRO | My unit is not turning on
- SuckR PRO | Why is the unit not turning on
- SuckR PRO | How to Assemble the unit
- SuckR PRO | How to Use the Extraction Function (Kit Sold Separately)
- SuckR PRO | How to Use the Vacuum Function (Wet & Dry)
- SuckR PRO | Storage and Transportation
- SuckR PRO | Why Is My Engine Housing Overheating?
- SuckR PRO | Why Is the Suction Weakening? (Losing Power)
- SuckR PRO | How to maintain the unit (Maintenance Guide)
- D-IONIZR | How to install the battery in your TDS meter
- D-IonizR | How to Use the Filter Guides
- D-IONIZR | I'm getting leaks from the inlet and outlets.
- D-IONIZR | Should I hand tighten or Wrench tighten my filters?
- D-IONIZR | The TDS metre does not turn on.
- D-IONIZR | What do I do with the tabs inside the housing?
WashR PRO | What is the Recommended size of the orifice nozzle?
For optimal performance and efficiency, the recommended orifice size for your WashR PRO is 4.0.
This size ensures the perfect balance of pressure and water flow, allowing your unit to perform at its best without placing unnecessary strain on the pump. Using a nozzle with a smaller or larger orifice may result in reduced performance, increased wear, or overheating.
If you're using aftermarket accessories or foam cannons, make sure they also use a 4.0 orifice to maintain consistent results.
Need help choosing the right accessories?
👉 Contact the bigboi support team here
Updated on 23 Jun 2025
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