10/25/2012 10:10 PM
Toro says every two years, or 2000hrs for moving hoses.
Back before golf, I was in the auto parts aftermarket, where I built miles of hose. I built hose before I could buy beer, sadly. We have a Gates machine (same as what I used to sell) in our shop curently, and I replace anything close to a green every two years. I'm overdue for many others, but I keep a close eye on those.
Funny fact. I priced out a major replacement last fall, for our fairway units. I gave the napa guy a heads up on a big purchase, me building them. I was tying in to his major drop ship order. I also told my Toro guy what I wanted. My Toro guys sharpened the pencil, and napa couldn't touch it, by hundreds of dollars, even with me assembling them, so I ordered Toro. They drop shipped direct from their supplier and the fit was just like textbook.