BriscoKid 2 #26 Posted April 4, 2015 520h are nice. Personally I'm no fan of Onans. Many pros cons can be found in a search. Kohlers typically outlast Onans by many years. Sent from my iPhone using Tapatalk A buddy of mine said the same thing about Kohlers and Onans. Think if I had the choice I would take the 414 over the 520 Share this post Link to post Share on other sites
JackC 617 #27 Posted April 4, 2015 Start up and ride a nice 520H if you get a chance. Listen to the engine. The main thing you have to learn about the 520H is how to keep the ONAN engine from overheating. In order to do that the cooling fins and air intake must be kept clean. They also require more frequent valve adjustment. Share this post Link to post Share on other sites
