This mower has been to a reliable shop twice this spring and its problem keeps recurring. It runs for a while - maybe even long enough to mow 3/4 of my yard, then dies. It will stutter a little, and most recently I heard the pitch of the engine change noticeably before it quit. Sometimes it will restart once or twice and run briefly, but eventually it won't start at all. The carburetor has been overhauled, and the filters have been changed. I've changed out the gas in my gas can 3 times. What on earth can be causing this problem?
Hi, most likely the carby has dirt in it again(if this is what the shop have been cleaning each time). If it comes good when cold the valves need adjusting. Regards Phil.
SOURCE: I recentley bought a Craftsman 4.0 HP mower at a
You need to disassemble the carburetor and spray the with carb. cleaner. Make sure all small debris is out. Ckeck any gaskets for signs of ware. If they look bad, replace them; your carb. could be sucking air if so. Also check the fuel filter to see if gas is flowing through it.
Jim
SOURCE: engine runs rough. I have changed spark plugs,
Check Flywheel Key, Carb Adjustment or if older engine also valve job.
SOURCE: I have a 2003 craftsman 6hp lawn mower. It would
Fuel Problem, Pull off the Carb bowl you will see the problem (Green Gunk and Varnish. When you drop the Carb Bowl you will see a hole in the carb assy. below the float, use a paperclip or other small object to clean it out........its probably plugged.
SOURCE: I can not keep my mower running. It ran great
Hi, I would suggest taking the main jet out of the carberator and cleaning it with carb cleaner. If you did'nt drain the gas out of it before winter, the gas has gotten old and has plugged up your main jet in the carberator. It could also be that the needle has got **** on it and is stuck, I'd clean that also. Your problem is all in the carberator, and old stale gas sitting in it all winter is the reason.
SOURCE: I have a Craftsman 625
Hello, I believe that you have clogged jets/passages inside of your carburetor. This can happen when an engine gets little use, allowing the fuel in the system to get old and begin breaking down. If fuel is left in a Carb for more than a year, it can eventually turn into a jelly like consistency, and clog the fuel system. What I believe is happening in your case is that the float needle inside the Carb is not allowing gas to enter the carb fast enough to keep up with demand. That's why it will run for 10 minutes and then shut down. After it sits for a while, the float bowl slowly fills back up and it will run for 10 more minutes. Now for the bad news. This is an extremely difficult carb to work on. It is all I can do to get these Carbs off an engine and back on again to clean them. They are tough because you have a big air filter housing and 2 long bolts with gaskets and then the carb itself and spacers, that you have to hold together as a unit and start the bolts holding the carb to the engine. If you are a good enough mechanic to do this, you will already know how to do it. If not, I honestly suggest you take it to a shop and let them clean it for you. A new Carb isn't all that expensive, so you may want to consider just letting them replace it instead of cleaning. I hope I've helped. If you found this information useful, please leave feedback as deserved. Thank you! Dane
My name is Dane and I am going to try to help you solve your problem.
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