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GPI G20 Maintenance: Clean or Replace Strainer

NOTE: This pump is designed for minimum maintenance. The motor bearings are self-lubricating. Inspect the pump and components regularly for fuel leaks and make sure the hose and power cord are in good condition. Keep the pump exterior clean to help identify leaks.
IMPORTANT: Do not use this pump for water, chemicals or herbicides. Dispensing any fluid other than those listed in this manual (see BEFORE YOU BEGIN: Fueling Requirements at front of manual) may damage the pump. The use of the pump with unauthorized fluids will void the warranty.

Tools Needed

  • 5mm Hex Wrench
  • Flat Blade Screwdriver
  • Nitrile Gloves / Clean Cloth
  • Soft-Bristle Brush & Solvent, or Compressed Air
  • O-Ring Grease


Clean or Replace Strainer

  • Turn the pump off and disconnect from power. Using 5mm hex wrench, remove the coverplate, O-ring, and inlet strainer and inspect for damage or clogs (see Figure 11). Clean the strainer with a soft-bristled brush and solvent. If the strainer is very dirty, compressed air may be used. If damaged, replace the strainer.
  • Clean the coverplate and O-ring. Coat the O-ring lightly with grease. Reinstall the strainer and O-ring. Ensure the O-ring is properly seated.
  • Reinstall coverplate, fastening bolts securely using an “X” pattern.



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Great Plains Industries