ning
Elite Member
My Craftsman DYS4500 (Kohler "26hp") lawn tractor-mower started running really rough the other day. I was mowing, and suddenly it just didn't want to drive the blades very well, so I disengaged the blades, took it up to my shop, and just when it got near my shop, it started running clean again. I mowed for about another hour, and then it ran rough again for a couple minutes (long enough for some $#@!%#@ to fly) and then cleaned up and ran fine. The next day, it was running rough and wasn't showing any sign of running better, and so I pulled the carb.
Carb is clean. Suspiciously clean, I'd say, because I've *never* had it apart, and the tractor's probably about 10 years old. The float was clean, everything seems peachy. I haven't put the carb back on to see how it runs now, but I'd be surprised if anything's different.
Fuel filter is clean and fuel flowed out of the outlet just fine (onto the ground, before I had the catch jar in place ).
Air filter is "clean enough". Spark plugs were replaced last fall, and look fine now - no obvious fouling.
Any ideas?
Only interesting thing I can think is that a couple days before this happened, I had the front end jacked up off the ground, so the whole tractor was tilted quite a bit (my main pulley had fallen off and I had to clean out the threads to get a new bolt in to hold it on - a bit more clearance was helpful). Maybe something got stirred up in the tank? - but, the fuel filter is pretty clean...
Carb is clean. Suspiciously clean, I'd say, because I've *never* had it apart, and the tractor's probably about 10 years old. The float was clean, everything seems peachy. I haven't put the carb back on to see how it runs now, but I'd be surprised if anything's different.
Fuel filter is clean and fuel flowed out of the outlet just fine (onto the ground, before I had the catch jar in place ).
Air filter is "clean enough". Spark plugs were replaced last fall, and look fine now - no obvious fouling.
Any ideas?
Only interesting thing I can think is that a couple days before this happened, I had the front end jacked up off the ground, so the whole tractor was tilted quite a bit (my main pulley had fallen off and I had to clean out the threads to get a new bolt in to hold it on - a bit more clearance was helpful). Maybe something got stirred up in the tank? - but, the fuel filter is pretty clean...