I've been using my L185 for 20 years, mostly without issue. However, I didn't use it the past two years and it sat outside through two winters. I knew the diesel fuel would be bad, so I drained the tank, took off the spin-off filter and shook it out (appeared to have water in it), refilled with fresh diesel, bled the lines from the filter all the way to the injectors and voila! started right up. I ran it yesterday for nearly an hour without a problem. Today, I was putting it to work to move some brush piles for burining and it died after about five minutes. It started every time I tried (30 times?) but would only run for about 10-15 seconds before dying again. I didn't actually flush the fuel tank (don't know how), but wondered if that water in the fuel filter had ruined it. Any thoughts/suggestions, besides replacing the fuel filter. If I have to actually flush the fuel tank, I'll need a little advice on how best to do that. Thanks.