1)OK before you mix any load you will need to work the levers and valves. When you get to the job ask the contractor how he likes his mix or slump. Make sure the truck is in neutral and the parking or service brake is pulled to the up position this will keep the truck from rolling away or worst.
2)Now you want to move the the charge discharge lever or foot pedal depending on the truck You will be controlling to the charge position.
3)Then open water valve to the let the water into the mix.
Watch Your slump gage to when to close the water valve remember it's like a hair cut you can always cut more off but You can put it back on. Same with water add it slowly until You get the desired slump. Then discharge to dump always start dump slow to let the cement flow before flooding the chute with to much heavy cement.
4)PS Always close water valve I keep my hand on it so I don't forget its open so you don't wet the load to much.
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