I have a Bolens BL410 cultivator that stops running when it gets hot. The engine starts perfectly every time, but after using is for a couple of minutes the motor speeds ups suddenly and then shuts off. I...
Hi and welcome to Fixya. The symptoms your describing are typical of what happens when the engine experiences fuel starvation.
It can be caused by a clogged fuel filter screen located at inside the attachment point of the fuel line manifold on the carb. Turn off the fuel and remove the mounting bolt for the fuel mainfold. Very carefully remove the plastic screen inside the manifold and clean off the debris that has built up on the screen.
If the screen was visibly clogged you probably have solved your problem. Just make sure you re-install the screen when re-connecting the fuel line manifold.
If the screen was not clogged then check your fuel lines for cracks. Air being introduced into the system will cause the same symptoms you describe.
If the problem persists then there is the possiblility that the needle and seat are partially blocked inside the carb itself on the bottom of the carb body after you remove the bowl. (Usually not the problem) However the bolt that holds the bowl on has 1 or 2 holes in it that can also clog and they must be clear.
And finally there is a BRASS jet that unscrews with a screwdriver in the bottom of the long draft tube (way below the throttle slider / needle) that gets clogged. Unscrew the brass jet and force air from the threaded end to clear the orifice.
By this time you probably figured out the float comes off with the bowl. note which side is UP! Also DO NOT adjust the float level it is preset. u|Unless you bent the float control arms it does not need adjusting.
Turn on the fuel... and start the unit after re-assy and it should run just fine. You should be tilling real soon!
Jan 29, 2010 |