Philadelphia, South Africa | My neighbour have a 4730 SP sprayer which recently started to loose its hydrostatic power. The front hydrostatic motor filter was clogged with a grid made up of something like copper and silver. When the filter is replaced the sprayer will work fine for another 50hr or so. They opened the front hydrostatic pump - no problem. opened the front and rear wheel motors - also no problem. The grid keeps on showing up. What could be the problem |