I have searched the forum and run tests before this post... My 753 appears to have screwed up its fuel pickup. It will only run with the tank totall full and after a half hour / hour it runs out of fuel. I let this happen a few times, it consistently acts like it has a 4 litre fuel tank. I removed the fuel lines and blew back... heard bubbles when fuel present, but when in no fuel state. If I fill again (to filler cap) it pours fuel out the line. So I assume I have to get to the tank and fix the pickup, it acts as if the pickup from the top of tank down is gone. I am looking for manual to confirm this. I cannot see that I can get to the tank without removing the engine fully. I am planning on disconnecting all I can see undoing mount bolts and using my fork lift to lift engine out... very tight as usual on the bobcat. If anyone has any tips before I start please let me know. Thanks Gavan