Upon firing up for the season, my impeller didn't work properly even though it was newly installed last fall when I winterized. I theorized that it was my fault for turning the camshaft once a month over the winter to keep the impeller flexible (something I learned on this HOW site). My supposition was that it inadvertently created a vacuum between the pickup jar and the engine because I was unwittingly pumping antifreeze out without replacing it with anything. The mechanic gave me that blank look that I get when I explain things to my wife.
Regardless, here's the takeaway. I asked him how he could be certain of anything since my H320 was thoughtlessly designed with the exhaust exiting under water so you can't tell if you're pulling water. His response was to feel the cover of the water pump to see if it was warm or hot, hence spinning without pumping. Pretty clever, and a lot easier than taking the thing apart for a trial-and-error expedition of overheating engine.
Regardless, here's the takeaway. I asked him how he could be certain of anything since my H320 was thoughtlessly designed with the exhaust exiting under water so you can't tell if you're pulling water. His response was to feel the cover of the water pump to see if it was warm or hot, hence spinning without pumping. Pretty clever, and a lot easier than taking the thing apart for a trial-and-error expedition of overheating engine.
