DP9 Protek Repair Kit D09RK Includes: REPAIR KIT - D09RK D0004 Check Valve (Disk) D0061 Diaphragm D0340 Drain Valve X0D04 ¼ -20 x 1” Bolt (4 Req.) X0D10 ⅜” Flat Washer (2 Req.) X0D11 Jam Nut (2 Req.) X0D12 ¼ -²0 Self Locking Nut (4 Req.) MAINTENANCE: Remove any debris under the diaphragm after each use. Clear all fluids from inside the unit after each use. TROUBLESHOOTING: If the Diaphragm Primer is not priming the pump, check the following: Make sure drain valve is closed. Inspect check valve for blockage and free movement. Any debris can cause clogging, or prevent the valve from sealing properly. Connecting hoses should be straight and clear of debris. Check suction side for air leaks.