05/21/2026
While I’m always trying to save my customers money, I will try to differentiate between mechanic specific jobs versus things. The customer can do on their own. Sometimes I’m a little tone deaf when a customer just wants the thing working perfectly again and is willing to pay the labor, whatever it is, to get that done.
Case in point is this power washer that a customer brought in. I’m sure he said at least once that he just wants it working again and that he is a fan of my work and brought it to me so that I could keep life simple for him.
What I heard was that the power washer will stall when connected to water and engine running but while he is not spraying. This point straight to the unloader valve in the pump, which has the task of unloading the pressure that is not being used at the moment. When the pump gets going it builds up pressure and is ready for you to pull the trigger on the spray gun but when you don’t have the trigger pulled that buildup of pressure can stall the motor.
In order to avoid stalling, the motor, the unloader valve is spring loaded and will allow water to recirculate rather than go straight into the hose. You have to adjust this valve from time to time because either the sprayer will not spray when you pull the trigger, this means that the unloader valve is set too weak. Or if you are not spraying, the motor will be overloaded and install, which means that the unloader valve is set too strong.
Based on his description of how recently the motor had been maintained, how frequently he uses the unit, and the fact that he has never adjusted or even been aware of the unload valve, I came to the very safe conclusion that the motor is probably not running very strong right now and in need of maintenance in order to run stronger and not be overwhelmed by whatever the current setting of the unloaded valve is.
So I said about to get the motor running strong again. Of course the carburetor needed maintenance and of course, I found debris in the carburetor bowl and the primary jet was partially clogged.
I had drained the fuel into a glass jar and noticed that there was condensation/water in the bottom. So I cleaned the fuel tank before reconnecting it to the rebuilt carburetor. Loaded with fresh fuel, the trustee Honda GC 160 engine started first pull and ran strong.
The water was connected, and the unit did not stall, although it clearly was dealing with a heavy load.
I adjusted the unloader valve to find the cut off between heavy load and light load and then wanted to test the sprayer, but the connections were all oxidated, and the spray gun was clogged. This unit hadn’t been used in years and it showed.
So I updated the customer, telling him that replacing the hose and wand is a non-mechanic activity and he can take care of that himself and save a little money. And I said that the unit is ready to go home.
He replied with relief that it’s running well and not stalling, but there was silence about what to do with the hose.
It wasn’t until the next day that I realize he really was baffled about the rest of the solution. He had asked questions about where he might buy adapters or hose parts.
Then occurred to me that he really just wanted the whole thing working and so I offered the option of an extra hour of labor plus the cost of parts and I would research how to adapt his quick release hose fitting from the pump to the more popularly available M22 pressure, washer, hose connections, and a good replacement for the hose and spray gun. He was thrilled! Agreed to the extra labor and thanked me for offering.
Sometimes an upsell is not an upsell if that’s what they wanted in the first place. 😆
So I made the order on Amazon later that afternoon and the next day the parts arrived. I was able to install everything and test it by washing three of my chainsaw projects.
Everything worked beautifully and the customer is very happy to come pick it up today.