I have a Ferris IS3000 ZTR mower that isn't running correctly right now, starts and then dies, it just recently started having issues with it. Lets start with a little back ground on the machine. Purchased it recently, included an aluminum bagging unit. Thing ran great and has 900 hours on it. Used it a couple of times and then decided to do some maintenance as the oil looked like it could be changed. Went and change out the hydraulic fluid and filter, change oil and filter, pulled off the bagging unit at the same time. Everything seemed to be working pretty well for the 5 minutes I tested it. Then I used it on a friends yard and it had no power when going up hills, I even had to stop and let the engine catch up while on a hill and I've been up and down it before with the bagging unit and the mower didn't even show any bit of power loss. The mower was running like crap at that point and couldn't go full speed with or without the blades engaged. So I take it home and pull one plug off and try to run it and it won't start, do the same with the other plug and it runs so I figure its the coil on that side. I replace both and its running top notch, I take a few laps around the yard with the blades off and its just ripping back and forth. So I start on the boarder pass and make it almost all the way around and the mower just dies. At this point it will turn over and start up for 1 second then die. I pulled the right hand gas tank and emptied it and cleaned it out, its drying right now. I didn't think that would be the issue as I've run a full tank through each fender and used the machine for hours before this but figured why not try it and make sure no sediment was in the tank. I have the starter switch off the machine and the pins on the back are slightly lose but nothing I'd get caught up over. Also I pulled the carb off real quick and pulled what I believe is the bowl off and it had fluid in it but no particles of anything, the diaphragm wasn't torn or broken but looked a bit worn. So quick recap: -Machine was running great, even had power to go up hill with bagging unit attached -After changing oil/hydraulic fluid/filter the machine ran rough, only seemed to be running on one cylinder. -Changed coils on both cylinder as one didn't have any spark -Machine ran great for a couple of passes around the yard and then just stopped running -Machine will only start for 1 second then dies. -Pulled carb off and didn't see any issues. Any questions please feel free to ask. I'm pretty stumped and before I go out buying parts I'd like to hear what everyone else thinks.