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depends on where the oil leaks from , normally a cloudy or "grey" oil sheen ,oozing out from here and there doesnt consern me too much , but now the oil running from the big hole or crack in the housing now that conserns me , make sure unit is "primed" with water (small flow from tip with motor off but hose turned on) if still no good then cycle your unloader a few times by tunring the pressure adjustment all the way up and all the way down with water on and motor runninng , this should work unless you have a larger problem
A common mistake people make when using the detergent dispenser is to use one of the high pressure tips on the wand while trying to dispense detergent. You have to use the black, soap tip so there isn't too much back pressure in the line for the dispenser to work. If you are using the black tip, check the dispenser line and fitting where it connects to the line for anything that may be blocking the line.
Assuming that you have a pressure gauge to determine actual system pressure. Without pressure gauge, you could use the sound of the engine as test for capacity pressure (if engine and pump are paired correctly, engine will labor at full throttle under high pressure). Using your machine at rated capacity will decrease the life of the unit. Better to use at 75 ~ 80 percent of cap. (2500psi on your unit). Pressure is developed thru the restriction of the tip/orifice assuming that the pump is working correctly. Tip should be correct for the capacity of the pump. Check the pump capacity for gpm (or test by removing tip connect water supply, then with engine running, catch water in bucket for exactly one min. and measure quantity). Example, 4 gallon per minuite should use a tip with 4gpm markings. If wrong tip size is used, (too large, low pressure, too small, pump will go into unload condition resulting in low pressure) . If thru testing you determin that the correct size tip is installed, suspect valves or unloader. Leaking valves or orings that seal valves will cause low pressure and also cause a pulsating sensation. Worn unloader will cause pressure to rise and fall in a slow cycle. Good luck with your repair
usually when the power washer pressure stops the machine is running out of water. the sweep function uses a little more water than the round wash tip. Make sure there are no leaks in the supply hose and that the supply faucet is turned on all the way and has plenty of "flow". also make sure the water connection at the washer is not leaking. use a new rubber washer to make a good seal on the supply hose on both ends. if either end leaks or can **** air, just a little bit of air into the pressure washer will cause it to loose pressure.
There is a rubber o ring in a groove towards bottom of the snap in connector.This seals around the tip as you insert it. It will never seal without it. The ball bearings you mention are only to hold the tip in place. The sealing goes on down in the coupler
Make sure that the tip of the head is not damaged, or missing anything. Sometimes, there can be a pressure leak from the tip of the lance, inhibiting the pump from kicking in properly. Hope that helps.