Hi, new member here. A lot of great info! Anyways, on to my questions: This Kohler CV15 I'm working on hunts at full throttle. It also backfires a little when throttling down. I've cleaned the carb, put a new aircleaner on, checked and cleaned the plug (which reads normal), and adjusted the governor. It idles great and throttles up fine but after a minute or two at full throttle that's when it starts to hunt and spit. Any ideas on how to cure this? I replaced the plug and it's a little better but still hunting and spitting a bit. Time to clean the carb again I guess. I also noticed after I ran it awhile what sounded like gurgling or bubbling in the carb and some gas was pooling in the air cleaner bowl. That's not normal, is it? Another problem is that the ammeter is always showing a charge and when I put a multimeter on the battery it reads anywhere from 16-16.5 volts, even with the lights on. The battery is new but went dead a couple days ago when the key was left on. I charged it with a battery charger but is the charging system or battery going or gone?
It sound like it may be time to go back into the carb., If it still hunts afterwards you may have the RPM adjusted too high which would cause a hunt also. As for the charging system; I would let the unit sit over nite then put your multimeter on the battery and see what you get,It shouldn't be but 12 to 12 1/2 volts then start the engine and throttle up to full speed and check the voltage it shouldn't be but around 14 1/2 max. If its higher you may have a voltage regulator acting up.
If the governor arm has "slipped" on the governer shaft, it can also make it "hunt". may want to consider doing a static governor adjustment as well.
Thanks guys, got the hunting fixed. Reset the governor per specs, replaced fuel filter with OEM model, and tore the carb apart again. Cleaned it up real good and now it runs like new.
