Horvik 31 Posted February 29, 2016 Hello; One member mentioned there is a vent on the BGB on this 1973 3416 H Sovereign. it has the fill plug on the st El, and no sign of vent. So, is there a vent to be found? Share this post Link to post Share on other sites
rokon2813 272 Posted February 29, 2016 I'm the one that mentioned the vent. Since then, I did see that on some models it is forward, under the tractor frame so it can't be used for filling. I don't have a 3400 series to look at, but I'm guessing that is your issue.I'm guessing your tractor looks similar to this, the vent is hidden.On this tractor 3300 series, it is located just about under the sticker. I'm used to the earlier tractors, where the vent is exposed. This is what your looking for, the vent is a red square plastic plug. Later, they integrated the vent with a dipstick and moved it to the rear. If you can't get to the vent, you will have to fill through the street elle. Share this post Link to post Share on other sites