6wheeler 669 #1 Posted June 15, 2014 I know this is in the wrong section. Not everyone looks in the engines section. I just fixed the valve seat on my 520 and I need the valve adjustment specs. My big computer is at the doctor so I cannot download the manual on this notebook. Does anyone know the specs. for this? Thanks in advance. Pat Share this post Link to post Share on other sites
P3x 57 #2 Posted June 15, 2014 Taking a break from mowing. Here you go - from the Onan 220 Service Manual Share this post Link to post Share on other sites