Try adjusting the gen voltage at no load to run at 240 volts
when the load comes on it will drop back to 220-235 volts
check the load output from the inverter as 2.5 kv is nearly 80% of the genset duty cycle
4.5 KV is start up KV and the duty KV is around 3..8 kv not the plated 4.5 kv
to get constant 4.5 kv you will need a 5.5-6 kv unit
if the current draw from the inverter is excessive , the engine may not have enough in reserve to over come the load and will not pick up the rpms
take the gen set and the inverter to a shop that has a calibrated load bank to test accurate power output to determine if the engine needs an overhaul
SOURCE: 20KW Guardian Generac does not produce 12 volts to run engine
The problem is that the printed circuit board inside the generator draws a little current from the battery even when the generator is not running. Over the course of a few days this can make the battery weak enough to be unable to get recharged by the built in running charger which results in not enough power to run the electronic governor on the generator. Usually the spark plugs will work even with a fairly low battery.
Most of the Generac generators come with a built in trickle charger that runs off of the transfer switch load terminals. If your built in charger isn't doing the job it's either broken or you have the wrong sort of battery installed in the generator.
Regards,
Carl
SOURCE: three year old coleman 5000/6250 generator. High
Your RPM's are too high. There is no voltage regulator in coleman generators (generator is actually made by generac) and is 100% dependent on engine speed. There is a screw under the tank when your looking in from the recoil side. It controls the governor arm. Screw it in and it incresses the rpm, out decrease. Plug something in that draws a decent load while setting the rpms since you want it to put out 120 and 240 underload. Your idle voltage does not matter.
SOURCE: I have a Coleman Model PM0545007.01 6250 W
Seems that your carberator maybe clogged at the jets. However, before you purchase a rebuild kit for your carberator make sure the fuel flow coming out of the fuel tank has a steady flow. I have seen where the fuel hole or line at the tank becomes clogged. If you feel the the fuel flow is poor grab a wire type coat hanger and clean out the hole and fuel line. Also, check for fuel filters, replace it if you have one on the genset.
SOURCE: Generator hard to start. Kick back
This sounds like the timing is off. Remove the spark plug and pull the cord to see if there is less tension. If there is less tension then you know that the pull cord is fine. Do a compression check on the cylinder, it should be around 100psi. Remove the valve cover and check to see if valves are moving when your pulling the cord. The valves could have came off the rockers.
SOURCE: Powermate model 544000 generator undervoltage
There are basically 2 possibilities that can cause this.
1) Enigne RPMs are too low. but, since you already played with the throttle, this probably isn't the case. RPMs should be about 3600 though.
2) The voltage regulator / capacitor has high ESR (resistance) or is bad altogether. Replace.
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