Originally Posted By: meep
Originally Posted By: sleddriver
+1 A neighbor had a (formally) nice Honda powered PW he allowed to sit wet (pump not drained)..for years. Inside is now all corroded. If you have an air compressor, I'd blow all the water out of the pump that's possible.
How do you drain the pump?
I have an old B&S PW but it has a new, very nice, CAT pump on it. I use the pump saver, but it the protectant seems to shoot out the pump the very moment it goes in--- like it's bypassing the internals. I'm not sure if that's right or not--- and I'm sure the innards are still containing water.
I don't have a manual for the pump mechanism that's installed. Is there usually a water drain?
I'd disconnect the output hose to drain it. If you don't have an air compressor, cup your hands around the output of a leaf blower and shoot air into the hose (water in) fitting. Have someone spin the engine over with the plug wire pulled off to clear the pump.
I've also used propylene glycol before to rinse out a pump before storage. My neighbors pump corroded so bad internally the metal (corrosion) was flaking off, clogging up the small filter screen in the wand, greatly reducing the pressure.
Once corrosion begins, there's no way to get rid of it, short of taking it all apart and cleaning her out. The bits of metal & corrosion are also very hard on the o-rings. Don't ever put her up wet.