cumminscook 56 #1 Posted November 27, 2013 just was wondering what the idle rpm should be on 20hp onan Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,503 #2 Posted November 27, 2013 This is from a 1988 manual that should work for you Garry Share this post Link to post Share on other sites
JackC 616 #3 Posted November 28, 2013 1200 or higher. The engine needs plenty of cooling air to avoid overheating and low rpm should be avoided to minimize carbon build up. Overheating and carbon build up are not good for the ONANs. Share this post Link to post Share on other sites
cumminscook 56 #4 Posted November 30, 2013 Thanks guys Share this post Link to post Share on other sites
