I own a northstar pro 80000 generator. I recently had to replace both capacitors. Now reading 145 and 148 volts per side. Any adjustments available to reduce? Thank you in advance, Mark

Needs to be polarized on the bike. See manual for proper polarization procedure.

I also have a Northstar 13 kw generator. Mine puts out 58 volts on one side 60 on the other. Does run at 60hz on both legs.

You cannot adjust the voltage output. All generators are rated for 110-125 volt recepticals and usually have at least one 220-240 volt receptical for special appliances that require it such as water heaters, pumps, welders, air conditioners. When one of these higher draw appliances is connected and they begin to draw amperage, the gas engine will automatically increase rpm to produce enough amps. If your generator gauge is showing low voltage such as 60,80 or 90volts for example, then you have overloaded the generator and blown a capacitor, resistor or similar item.

The revolutions per minute are probably too high. You will need the appropriate screwdriver and a volt meter to adjust. Possibly have another person help you. Connect the volt meter to the output with the generator running. Locate the speed adjusting screw on the carburator and adjust it one way or the other until the voltage on the voltmeter reads 125volts. Before yoy begin adjusting the carburator take note the position of the screw and then count the turns in the event you have to return to the place you started.
Good Luck

Hello, First figure out what the load per leg is on your generator. Are you using the 240 Volts because this is two 120 AC volts legs and they are 120 degrees out of phase with each other.

You will need to figure what the power factor is for each phase on this generator. To figure the power/wattage by using ohm's law. Voltage times Current will give you Watts. Example: If the generator is generator 240 volts the maximum current available is about 23 amps. The maximum current for 120 volts will 46 amps. Therefore, the maximum current per 120 volt circuit is 23 amps for one circuit and 23 amps for the second 120 circuit..

I would try replacing the circuit breaker with the same amperage breaker. Also, watch what the generator load is per circuit. You can install current meter for each circuit. This will give a good indication of which circuit is pulling more load than the other circuit. GB...stewbison

on the end of the rotor their is a Diode as well as a varistor these will go bad common in these units and cause a power loss these are attached to the rotor by a strip some like a pc board some a insulated tang to say remove the 2 one on each side Diode part# 778959 varistor part# 778961 manufacture numbers you should be able to go to any electronic store like radio shack and cross ref the numbers as to the diode i don't have the spec's but when you find it it will have the voltage rating get the next size up it is better to go to a higher voltage what the diode does it acts like a 1 way valve power flows one way and if their is a spike it wont allow it to come bach and damage parts before it it will also act like a fuse to sorts to much it will pop. the varistor varies the flow their sensitive and adjustable if purchased from other than manufactures factory it will need to be adjusted hope one is good and use a multi meter and test the Resistance and adjust the new one to that spec as close as you can at the end plate their is a capacitor part # 778958 replace this as well again go a higher volt rating but do not change the MF value with this said and done.your will have a more stable sign wave and beefier circuitry able to hold up better use lock tight on the screws for these.ther is not any control in the box with the plugs just breakers after replacing these parts and there is still no power then the stator is shorted and will need either re-winding or replaced.
hope this helps.

Most low voltage conditions on generators are simply due to a low engine rpm. Most modern generators are 2- pole windings. So your engine rpm should theoretically run @ 3600 rpm. which will produce 120/240 volts @ 60 HZ. In actuality You want to set your rpm's @ Approx. 3720rpm no load. About 62.5 Hz. Without getting to technical this will give you your desired 120/240 volts loaded. Hope this helps.

I found out that the gasoline motor was turning too fast so I had to turn down the speed of the motor with the adjustment screw.

My 13 hp 8000 watt is not putting out any power dose it need to be exsited and if so were do i do it at?

I worked at a tool rental center while going to college and learned how to service generators. Most appliances/tools require 50 to 60 cycles at 110 to 120 v. Your engine was designed to give maximum horsepower at 3600 rpm. Adjust the engine speed to produce 60 cycles and the engine should be at 3600 rpm and producing around 120v max. (Some special generators were designed to produce 230v 180 cycles, check manual) If your generator incorporates capacitors check them for at least 95% of printed uf value. They should be removed from circuit for testing. If there are two caps and one is weak make sure the new cap reads close to value of remaining cap. Finally there is usually a voltage regulator that varies the power to the armature magnet trying to maintain steady voltage depending on amp draw and engine condition. This regulator has no adjustment and is pass or fail type of item. Good luck, enjoy