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Pressure Washer 3700 Maintenance

Required Tools and Supplies

  • Phillips Screwdriver
  • Eye Protection
  • Nitrile Gloves
  • Shop Rags

It is the responsibility of the owner and/or operator to have all scheduled maintenance completed before operating the pressure washer. Be sure to follow the inspection and maintenance recommendations as listed in all the manuals that came with this unit. Always wear safety glasses and nitrile gloves when servicing your Polaris pressure washer. View the use and care manual for this pressure washer by searching the Polaris Accessory Installation Instruction Site.

To perform maintenance on your Pressure Washer 3700 (product number 2830573), follow these steps:

1. Ensure the power washer is on a flat, level surface in a well-ventilated area.

2. Before each use, begin by checking your pressure washer for leaks, loose or damaged parts, and any other condition that may affect proper operation. Note: Be sure all safety guards are in place and in proper working order. Inspect all air vents and cooling slots to ensure they are clean and unobstructed. Repair or replace all damaged or defective parts immediately. For safety reasons, all pressure washer service and repairs should be performed by an authorized service center. 

3. Clean your pressure washer, make sure the engine is turned off and has time to cool down. 

4. Use an air compressor, set at no more than 25 PSI, to clear dirt and debris from the pressure washer surfaces, vents and cooling slots. 

5. Wipe the exterior clean with a damp cloth.

6. To clean the hose connections, spray gun and pump connectors, they should be cleaned and lubricated with a thin film of lithium grease regularly to prevent O-ring damage and leaks.

7. To clean the nozzle, start by shutting off the pressure washer.

8. Turn off the water supply.

9. Point the spray gun in a safe direction and squeeze the trigger to relieve the water pressure and set the trigger lock.

10. Remove the nozzle from the lance quick connector.

11. Clear any obstructions from the nozzle by inserting the nozzle cleaning tool that was provided with your pressure washer. Note: If the nozzle becomes clogged, the pump may pulsate, and spray patterns could change. Excessive pressure may develop, possibly damaging the pump or other accessories. 

12. Rinse any loose debris from the nozzle by directing a running garden hose into the output of the nozzle for at least 30 seconds.

13. Before each use, check the inlet filter and clean by following these steps. Note: Never operate the pressure washer without the inlet filter properly installed. 

14. Remove the filter from the garden hose coupler.

15. Use water from a running garden house to clean both sides of the filter. 

16. Insert the cleaned filter into the pump inlet with the convex side facing out.

17. The pump on this unit is a maintenance free design. The pump was filled with oil at the factory and has no oil drain or fill plugs. If there is a problem with the pump on this pressure washer call 1-877-362-4271

For more information, see your authorized Polaris Dealer. Find a dealer near you with the Dealer Locator.
For replacement part numbers, use the online parts catalog

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