Howdy:
New to the forum but been following for a while. Not too savvy with a wrench but learning as I go with this toy, and I could use some expertise here: Got a B7610 with about 400h 2 years ago and it's been working great for me. Recently damaged the radiator and fan, which I replaced, and it had been running fine until a week ago I noticed that while mowing it would occasionally randomly lose power (RPMs would drop to about 1000) for a few seconds, then resume full throttle. It would happen every 5 or 10 minutes or so, but couldn't find a rhyme or reason to what I was doing when it happened. Chalked it up to maybe something in the fuel line. Then last week I mowed for about an hour with no problem, until it started dropping RPMs more frequently. RPMs would rapidly go down, and sometimes it would recover, but then began stopping altogether. When it would die, I could restart it with prolonged turning over and it might run for a minute or so, so with multiple cuts and restarts I got it to the garage. Getting it home with multiple restarts depleted the battery so I left it for today.
Today I recharged the battery, drained the entire fuel tank (wife had bought the diesel that I had been using for the last week), cleaned out the fuel filter and refilled with new diesel from a different station. Thought maybe there was air or water in the fuel lines so I bled them and she started right up, no problem, no sputtering. Patting myself on the back and blaming the bad fuel on the wife, I went out and mowed for about a half hour without any problems, and then it lost RPMs and died again, not wanting to restart (would turn over and sputter, but would only run at low RPMs and then die). Realizing that I must've been off about the bad fuel/water/air in the lines, I decided to just leave it in the field for a while to let it cool off, and when I went back a half hour later it started up with effort and ran fine for the 5 minutes I took to finish where I was at and get it back to the garage.
So it seems to run fine when cool but whereas it was previously just losing power temporarily, it's now dying after about a half hour of running fine. All fluids look good and it's not overheating on the gauge. Does this sound like an obvious fix to anyone out there?
Appreciate any help!
New to the forum but been following for a while. Not too savvy with a wrench but learning as I go with this toy, and I could use some expertise here: Got a B7610 with about 400h 2 years ago and it's been working great for me. Recently damaged the radiator and fan, which I replaced, and it had been running fine until a week ago I noticed that while mowing it would occasionally randomly lose power (RPMs would drop to about 1000) for a few seconds, then resume full throttle. It would happen every 5 or 10 minutes or so, but couldn't find a rhyme or reason to what I was doing when it happened. Chalked it up to maybe something in the fuel line. Then last week I mowed for about an hour with no problem, until it started dropping RPMs more frequently. RPMs would rapidly go down, and sometimes it would recover, but then began stopping altogether. When it would die, I could restart it with prolonged turning over and it might run for a minute or so, so with multiple cuts and restarts I got it to the garage. Getting it home with multiple restarts depleted the battery so I left it for today.
Today I recharged the battery, drained the entire fuel tank (wife had bought the diesel that I had been using for the last week), cleaned out the fuel filter and refilled with new diesel from a different station. Thought maybe there was air or water in the fuel lines so I bled them and she started right up, no problem, no sputtering. Patting myself on the back and blaming the bad fuel on the wife, I went out and mowed for about a half hour without any problems, and then it lost RPMs and died again, not wanting to restart (would turn over and sputter, but would only run at low RPMs and then die). Realizing that I must've been off about the bad fuel/water/air in the lines, I decided to just leave it in the field for a while to let it cool off, and when I went back a half hour later it started up with effort and ran fine for the 5 minutes I took to finish where I was at and get it back to the garage.
So it seems to run fine when cool but whereas it was previously just losing power temporarily, it's now dying after about a half hour of running fine. All fluids look good and it's not overheating on the gauge. Does this sound like an obvious fix to anyone out there?
Appreciate any help!
