Good Idea
Paying and watching sounds like a very good idea. I took the basic yanmar course at Mack Boring and they went over the basics. At the end of the last season I decided to winterize myself and save about $500.00 for all of the various systems - obviously no savings if I messed up. I changed oil and filter for the engine and the oil in the transmision, simple process. I then closed the intake for the engine, removed the intake hose from the water pump, attached a 5 foot section of hose I had bought, filled a 5 gal bucket with anti freeze and started the engine, when the pink stuff came out from the exhaust for about a minute I shut the engine. The only thing I failed to do was remove the impeller which I will replace in the spring. The instructer at Mack Boring suggested that it be removed, cleaned and stored in olive oil for the winter.Good Luck, peace of mind says let the yard do the work.The water system was easy but the AC/Heat was a problem and I worried about it all winter but it was fine in this spring.