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I've bought various 6718 stuff from here http://www.tractorsparesdirect.co.uk/index.php?app=gbu0&ns=catshow&ref=Zetor-6718&sid=9l276io9ir867l54s5s863nl296j9m27 and here http://www.agriengineering.co.uk/en/store/secure_listItems.asp if it's any help. (That's UK to Uk though, don't know about...

I checked the piston at the bottom of the lift pump, and it was fine. I removed it, gave it a clean, then refitted it. I also blew back through the tank line, drained the fuel and refilled the tank. It appears to have fixed it, although I'll need to try it under load first. I'll post back here...

Your comment about 'Diesel Bug' was interesting, I asume you are talking about the fungus [i]cladosporium resinae[/] which lives on water and hydrocarbon fuel (normally kerosene, jet fuel and diesel) in tanks. I have some Biobor I 'found' ;) that I can put through if I find it. I haven't seen...

Thanks Steve, Ill have a look at those points later. I have already changed the fuel filters (and checked they were fitted the coarse then fine) and fitted another hand pump, as I did suspect them. I haven't checked the tank outlet or blown the lines through yet, though. It was the fact that...

I took it for a run, and it went ok for a while, then stopped. Pushing the cold start started it again, then it stopped within a minute. Pushing the cold start started it again, then it ran for a while before stopping again. It was very down on power - I had to drop it to 3rd to get up my hill...

More info. I took the side cover off the pump and made sure the rack moves ok. It seems to, and I sprayed it with a light lubricating oil to make sure. At max throttle, the rack seems to be at about halfway travel (around the pump pistons/springs), and with the cold start in, it moves across a...

Ok, I've now flushed out the governor oil - it was red (I think it was red fluid, not rust) but also dirty. I flushed it through with kerosene (JetA1 actually ;D ) and slightly overfilled it with Castrol Edge 5-40 fully synthetic oil :o It now runs for longer, but still drops out sometimes. I...

Hi all, I have a 6748 that ran great until recently (when I needed it for the snow). It began by not starting, then after using the hand primer it would start, then die. I changed the filters and hand primer as each time there appeared to be air in the pump so I assumed blocked filters or an...