So lately during my washout (2012 schwing 750 18x) my washouts have been troublesome and providing me with ample amounts of stress I've been gettin seperated mudd in the last hose before the candy cane and some times right on the ass end of the pump. So in that I have a few questions for you more seasoned and knowledgable operators.what steps do you take to wash out .how far do you pump hopper down before filling with water.do you leave agitator on or off and do you start. Your washout fast or slow?

I've always pumped my hopper all the way down , and pushed it thru at a normal pace , not wide open , and I would remove the candy cane and wash it by hand , you may want to look at wear parts in the hopper , if its a rock valve you could have cutting ring or a kidney seal issue.

and agitator really has no bearing because its only water left in the hopper.

Connect the cane to the truck, tie it down, turn ur pump down low

slowly pump down and push the concrete into the cyclinders. takes a bit of time if you want little left, when it starts just spitting at u open the hatch, scrape all the concrete out into your wash out tub, tighten hatch and fill it up with water, ( depending on how many feet of hose ) that hopper is pretty big with 200 feet or less one hopper should do it. then go roll your hoses out into some place you can or into 5 gallon buckers, open hatch remove reducer, throw it in reverse clean out cyclinders.

PS - I NEVER put any water in that pump inless it has no concrete in it. I never plug on a wash out either..

I would never do that.. Pump water in to a line full of concrete.. I only have very bad experiance with that..

You know - when I ran a line pump and water washed the pump and hoses. I would close the lid on my hopper and pump and pump until air came out the end hose. It would look like a puff of smoke. Once you see the puff of smoke, you know your hoses are half full of concrete since the air that got pumped through - cleared half of the concrete out. Fill the hopper up with water and more water is always better. Pump until water comes out. Always be mindful of any plugs - because you have air in the system which can create a BOMB. It's dangerous but hugely effective if done right. 

Always water wash with that candy cane "S" hook thing off. A piece of steel on the end of a rubber hose with water and air is not cool. 

If you have had successful water washes in the past and this is a new problem for you. Then it's your pumps cutting ring/wear plate. Or bad hoses or perhaps you are using a new candy cane and its not matching up well against a old hose. 

Bottom line no matter what you do before water goes in the hooper make sure you stop the pump on the forward stroke at the very start of the new stroke. For example stop the pump right when it switches over to the next stroke. For me this works 99% of the time and i water wash just about half of the jobs i do. Also i prefer to only water wash with 25' of 3" - 4" line and a candy cane and no more then 50' for 2" - 2.5" hose to a candy cane on a rock valve or s tube pump. If i want in real clean i recirculate a full hooper make it real soft before i water wash. I also pump my hooper down as much as posible even blowing some air pockets through the line.

I cant stress enough about stopping the pump at the start of a new stroke for me it my rule when it come to water washing never get stuck. The reason for this is when you fill the hopper up with water you want to have each stroke take in mostly water and not so much of concrete and water thats why i pump my hooper completely down. Message me if you need anything!