wow21 0 #1 Posted March 23, 2013 just acquire a 520H that sat for over 10 years. Have it running but governor keeps on surging no matter where thoratle is set at. Is it a carb issue or governor problem. Share this post Link to post Share on other sites
varosd 1,185 #2 Posted March 23, 2013 Most likely carb issue. Onan carbs can be quite finicky even when super clean. a tractor that has been sitting for 10 yrs should have a good gas tank cleaning out, add fresh gas,new fuel filter, new fuel lines, carb cleaning etc and go from there. Any pictures? Share this post Link to post Share on other sites
wow21 0 #3 Posted March 23, 2013 mo pics yet, was wondering if have ti rebuild carb. where is good place to get kit. hope to have pics soon Share this post Link to post Share on other sites
wow21 0 #4 Posted March 23, 2013 done everything but rebuild carb Share this post Link to post Share on other sites
chrisd200(inactive) 55 #5 Posted March 23, 2013 Hey bud, I would definitely say CARB!!! Onan rebuild kits are expensive, $100 + around here unless you can find aftermarket or a good deal on ebay. Try taking it apart and just cleaning it first. I have gotten lucky on a few Onans. Surged at any rpm, cleaned it out and ran great. Had a 416 and a D160 and they both turned out well. Had one or two that we had to replace the carb on as well though. Good luck!!!!!!! Share this post Link to post Share on other sites
Sparky-(Admin) 19,592 #6 Posted March 23, 2013 I agree, a good cleaning is what it needs and probably not a rebuild. Mike......... Share this post Link to post Share on other sites
JackC 616 #7 Posted March 24, 2013 What year is it? The early non emission carbs (pre spec G engines) are easier to deal with. Sometimes all it takes is to clean the ethanol deposits crap out of the bowl and fuel inlet. Share this post Link to post Share on other sites
wow21 0 #8 Posted March 24, 2013 It's a 94 model, thanks for the info fellas will try cleaning the carb. Share this post Link to post Share on other sites
chrisd200(inactive) 55 #9 Posted March 24, 2013 Good luck buddy, let us know Share this post Link to post Share on other sites
wow21 0 #10 Posted March 31, 2013 Got the carb clean finished today. It's purring like a kitten. Thanks for everyone's input. Share this post Link to post Share on other sites
chrisd200(inactive) 55 #11 Posted April 1, 2013 Congrats!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Now enjoy!!!!!!!!!!!!!!!!!!!!!!!!!!!! Share this post Link to post Share on other sites
