Glad you got it running. For me, I bought a Mr. Funnel maybe 8 or 9 years ago, and I think I have used it twice.
The problem, for me, is as someone above noted, the filler on the 900's is at a weird angle. There is nothing to sit the can on while refueling, the silly little removal spout extensions fall off, finding a permanent new storage slot in the bottom of your tank, and a funnel tends to fall out of the filler hole because of the angle. The Mr. Funnel is SLOW.....did I say SLOW............While one fumbles with keeping the funnel aligned and in place on the Kubota, your third hand is manipulating the Obama inspired and mandated fuel cans that are available for use, too much can and does go wrong. YOU KNOW WHAT IT'S LIKE................
So, I got me one of those replacement fillers spout thing one can order from the internet to use on the modern day cans with a very long spout and fast rate of flow. I use this while most often, pouring into a huge....HUGE....funnel that will drain a horse trough in 30 seconds flat. Fabricated a stiff piece of 8 gauge wire that holds the funnel in place on the RTV while slipped over the 1" tubing there just above the filler spout.
Well, dummy, what about the dirty fuel?????..................I buy my fuel at the local high volume truck stop down the road. I learned a long time ago NOT to buy my fuel at the "Mom and Pop" where I stop in the mornings for my sausage biscuit and fresh load of gossip.........They sell maybe 10 gallons per week to the occasional folks coming up out of Atlanta that are brave enough to run the gauntlet of "good ol boys" sitting around out front on the steps, benchs and home-made stools that they bring with them to spend the day...................Up until maybe 6 months ago one could get ethyl high test. Forget about this ethanol stuff you read about that one HAS to Buy.
That's why Ernie and his cousins have developed a wood burning gasification system that looks like a nuclear reactor on the back of their 52 Chevy flatbed................
Anyway, I go on and on...............When getting gas at one of these places, yes, use a filter, or you and your honey are gonna be stranded down at the pond while taking her on her "virgin" ride on your 48 Indian Chief rebuild with the custom fender seat that vibrates just right..............This will definitely take the wind out of your well laid plans.
So, I use clean gas, diesel, kerosene, natural gas, or the new fangled hydrogen from a fuel distribution dealer that sells thousands of gallons of fuel per hour. When was the last time you filled up at an outfit that has a direct pipeline to the refinery and then got stranded because of "bad gas".
So yes, by all means USE CLEAN FUEL. You filter yours at 1 gallon per hour through multi-layer .0004 micron elements..........I just make sure mine is clean from the start............God bless........Dennis