Saw worked fine until today. Kicks breaker withing seconds of starting. both 15 and 20 gfci's kicking within seconds.

You may have a GFCI breaker. Those can be sensitive to sudden power draw. When you start the unit, the motor kicks on and causes a sudden power draw as it starts to turn. That spike may be all it takes to trip a GFCI. I had a portable air conditioner that would occasionally trip a GFCI breaker when the compressor would kick on. It would be in the breaker box.

All 2-strokes love to run rich when cold thus full choke till it kicks, half choke to start and leave on for 5 seconds high rev's to warm & lubricate, then no choke to run. Restart when hot is 1 pull full choke (you are now flooded) & then no choke til it starts. Try it. Works every time on all of my 2-stroke engines.

If you're referring to a GFCI (Ground Fault Circuit Interrupter) breaker tripping, a refrigerator should not be plugged into a GFCI circuit because of the sudden load it requires to start the compressor, etc when it kicks on. The GFCI breakers are meant to be very sensitive, and over time the sudden energy demands caused by a refrigerator can weaken the breaker's threshold, causing them to trip often. Try connecting the refrigerator to another circuit that isn't on a GFCI breaker. If there are no other circuits nearby, you may wish to replace the GFCI breaker with a standard breaker, and replace the receptacles with GFCI receptacles, except of course, the one the refrigerator is plugged into. Be sure and consult and use a qualified electrician for this. Hope this helps..

check for a broken wire some where

replace the receptacle, its tripping due to wear . if the unit works fine in another receptacle , its not the unit

Refrigerators should not be run on gfci plugs .As they age , they will pull slightly more amps . Also , gfci plugs will weaken even though no previous problem with them . If you have a gfci plug behind the refrig , replace it with a normal type plug .

Hi,
Here are a couple of tips that I wrote that tell you how to troubleshoot aTorpedo or Reddy heater...

Reddy Heater - Troubleshooting Torpedo Heaters Torpedo Heater Pump Pressure Adjustment
heatman101

try a different tool or a shop-vac or something. If they work then your saw has a problem

short in saw