Dirty fuel filter.
A clogged fuel filter can restrict or prevent fuel flow. This would starve the engine of fuel, and cause it to shut down due to lack of fuel.
It will cause those and eventually will shut down your engine until the filter is changed or cleaned.
Clogged fuel filter, air filter, or a fuel pump going bad. ckeck and see if you have water in the filter, if you do you need to drain the tank.
cause you have to think about where you are going
There are several reasons that the rpm of a power generator is going down. The rpm going down could cause damage to the motor if it is not fixed. To find the exact reason why this is happening review your user manual.
I'd check the fuel filter first.
Sit Down
Plugged fuel, air filter, or catalytic converter can cause that.
no they do not break down
You may need to replace the gas filter and use a higher ouctane if that does not do the trick then you may need a fule pump.
allternator , solinoid, or distribution cap o2 sensor,starter,fuel filter,fuel pump,