kasey54 304 #1 Posted June 27, 2016 I t followed me home . Does the serial number have O"S, and the letter O in it? 2 Share this post Link to post Share on other sites
JackC 616 #2 Posted June 27, 2016 Yes. The "O" is for the Onan engine. The "E" is for the Eaton transmission. "01" at the end is the 1988 model year. "02" would be 1989. 1988 was the first year for the 520-H. 1 Share this post Link to post Share on other sites
kasey54 304 #3 Posted June 27, 2016 I thank you for that JackC 1 Share this post Link to post Share on other sites
