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yup, it's crap fuel .. i regularly add lube to the fuel when the trucks are working .. the three i had trouble with were expected to work but it didn't happen thus they didn't get the lube .. even the fuel oil we use in the off-road equip isn't what it used to be , still having trouble freeing...

Will's post above is as always, spot-on about these engines. I have learned more than a few things from his posts. Been behind 855's of all sizes for over 40 years but never had to tinker with them to keep them running until the last few years. And I know I haven't seen it all yet when it comes...

three of my M809-series developed the smokeless skip recently (the 813 was missing on at least 4 cyls) after only getting run a few hours a year for the last 3 years and not run down the road. Bad me. Fuel was changed out a couple times a year. A pint of seafoam dumped down the IP feed hose and...