The checkballs are monuted inside of the pump in the pick-up tubes for the pump. Does the pump sound like it is running slower than normal. The SEA RAY I redid last year wasn't lifting the leg up properly so I pulled the pump apart and went through the pump. The brush's in it were sticking and not letting power to armeture under load. Simply pulled them out of there holders and sanded with a little 320 to clean them up. And the actual pump driveshaft that drove the main pump gear was galled. So I sanded the shaft and re-assembled, worked like new afterwards.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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