Kubota's love a glow to get them going,it sounds like you've got compression, I presume there's white fuel vapour comming out of the exhaust, so find a hot air gun (as used for paint stripping) and blow hot air into the inlet manifold, do'nt blow into the air cleaner, as close to the engine as possible is best, it works for my cherokee when all else fails . Variations on this trick get most lazy diesels going.
Andy
February 2011