Anonymous posted an answer for this Stanley Professional Backpack Poly 4-Gallon Sprayer #61804:
"MY STANLEY 61804 DOES NOT PUMP. THE PUMP HANDLE JUST POPS STRAIGHT DOWN EVERY TIME i TRY..."
Anonymous posted an answer for this Stanley Professional Backpack Poly 4-Gallon Sprayer #61804:
"the darker Seal has come off the plunger at the bottom of the unit , easy 5 min fix , just..."