K301 Engine issues

[jlw247 0]

Hi guys, I hope you can help me with my engine issues. I have A C-125 wheel horse with a K301 12 hp engine, with points.  The tractor started fine, ie used the choke to start the engine with the idle at midway. Once the engine established rpm for 30 seconds I disengaged the choke and let the motor idle for 2 minutes. I started cutting the grass and 10 minutes into it, the engine starts to choke and puke. I turned off the pto, this didn’t help so I started engaging the choke and the engine settled down. When I try to disengage the choke the engine starts to sputter out again. The engine ran fine with the choke engaged on the engine, so I cut grass for 10 more minutes with the choke engaged. Then it started to sputter again. At this point the engine will not run with without the choke engaged.  I tried adjusting the carb to base settings but nothing changes the scenario.  What do you think?

 

Joe

 

 

[illinilefttackle 399]

Joe- I have the same set up- when I first got it-it did exactly the same thing as yours-turned out to be the screen in the tank-I replaced the shut off-came with new screen-Al

[puddlejumper 67]

First as mentioned above clean everything. Then if it only does it when hot check the fuel pump carefully while its hot and acting up. They will fail occasionally when hot let it cool down and allis well again. I am coming to this conclusion due to the fact choking it helped as it steadily got worse.

[dbartlett1958 99]

Also make sure the tank is vented.

[GlenPettit 1,717]

The new E-10 gas mixture is causing fuel problems, plugging of the screens and small openings on these small engines.  If you can't find 'Regular Gas', keep the E-10 very fresh and clean out the fuel system regularly. There are additives that an help stabilize that gas some, and try and use 89 octane.