Aaron64 1 #1 Posted February 20, 2018 Dear all, First off, please forgive me me if I am not using this forum correctly. This is my first day here. I purchased a 520 H last spring. I am servicing it now for this years mowing season. I am a little stumped on a matter with the transmission fluid filter. Every string I have seen shows a NAPA or WIX 1410 as the correct filter. The tractor now has a Onan 122-0800. From what I can determine, that is actually a engine oil filter. I have the NAPA 1410 and it is a larger diameter that the Onan 122-0800. Am I ok to use the NAPA 1410 in place of the filter on the tractor now? Share this post Link to post Share on other sites
Shynon 7,461 #2 Posted February 20, 2018 Use the Napa 1410 on the transmission 3 Share this post Link to post Share on other sites
cleat 6,362 #3 Posted February 20, 2018 And leave the filter loose or completely off while filling the transmission. That allows air to easily burp out. Just don't forget to install it before starting the tractor. Cleat 1 Share this post Link to post Share on other sites
953 nut 55,837 #4 Posted February 20, 2018 Write down the spec number of your Onan engine and go to NAPA, they will be able to fix you up. As others have said, the 1410 is for your transmission, you will need five quarts of 10 W 30 to change the oil in the transmission. 1 Share this post Link to post Share on other sites