Can any anyone help me with this. The generator is a brushless, air-cooled diesel generator without AVR. It is kinda old and it's made from Japan. The manufacturer is Yanmar.
All you need is a transformer to boost the low AC voltage up to 110 or 120 volts (for USA and Canada) or 220-240 for other countries. You need to know what voltage and current the generator does produce, and if it isn't specified on a plate on the generator, you will need a multimeter. You could probably get an inexpensive one at a hardware store. Then you need to hunt for a suitable transformer. It not only has to have the right input and output voltage ratings, but also the current rating that the generator can put out. Keep in mind that V1xA1 V2xA2. So, for example, if the generator puts out 60 volts at 10 amps, you would get 120 volts at 5 amps with a 1:2 coil ratio. Both input and output coils have to be rated for at least the amps in the equation, but the rating can be higher.
Open up the end of the generator and check the capacitor. It may need to be replaced. You may also have to flash the field if it hasn't been used for some time. Try one of these techniques 1. Plug the electric drill into the generator receptacle. If the drill is reversible, move the direction switch to the forward position. Start the engine. While depressing the trigger on the drill, spin the drill chuck in reverse direction. This will excite the field and the generator will now produce electricity. If spinning the chuck one direction does not work, try spinning the chuck in the other direction as you may have the reverse switch positioned backwards. Use caution not to get your hand or other materials caught in the chuck. As soon as the field is excited, the generator will produce power and the drill will turn on. 2. If the engine is working fine, but there is no output voltage try this trick. It may work on standard alternator type generators, but not on those which use an inverter. It worked for me in the past, but try at your own risk. First check to ensure that all circuit breakers and fuses are ok. Shut off the engine and remove any cords from the generator. Plug in a cord with bare wires on the other end to one of the 120VAC outlets. Connect one end of the cord to a car battery. Very quickly touch the other wire to the other battery terminal. Do not leave it there longer than to create a few sparks or you may destroy the windings. If the residual magnetism in the alternator had weakened, this may be enough to get it started again.
There's a capacitor in the generator, and I suspect it's bad. They're not very expensive, and can be tested with the right kind of meter.
