How to get the stator off a fuji micro 3700 generator

It sounds like there may be an issue with the ECO switch on your Fuji micro XE-SF 3700 generator. The fact that the A/C power output cuts out and the motor high revs when the ECO switch is set to handle a heavier load, and that there is no power when the switch is set to economy mode, suggests that the switch may not be functioning properly.
It is possible that the switch may be faulty and needs to be replaced.
I would recommend consulting the manual of the generator or contacting the manufacturer for further assistance. A professional technician should be able to diagnose and fix the problem.
It is also possible that there is a problem with the generator's voltage regulator or control circuit. These are complex systems, and it may be best to have a qualified technician diagnose and repair the issue.

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At present, the gasoline engine does not have 24 V, diesel engine has 12 V. The ignition of gasoline engines is different from that of diesel engines. Gasoline engines use spark plugs to ignite combustible mixture air to explode for work, so they do not need high speed. A low-power starter does not have to use 24Vstarter battery, while a diesel engine needs a high speed to do its work through a high-pressure spontaneous combustion explosion, such as the excessive volume of a 12V high-power motor. Therefore, the low temperature starting performance of 24V.12V diesel engine is generally used in low power diesel engine, and the application of deceleration starter solves this shortcoming.

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Hi, Thanks for your Question. My name is Kevin and I will try and provide a solution to your question.
Your Husqvarna is equipped with a Briggs and Stratton engine. The Stator acts as an alternator to provide power to keep the battery charged after passing through a rectifier/voltage regulator which converts the A/C current generated by the stator into D/C current regulated to approximately 13.8 volts.
The stator is located beneath the flywheel at the top of the engine. Keeping in mind that it is extremely rare for a stator to fail, it should be tested to verify it is malfunctioning. This can by done very easily with a voltage meter set to measure AC voltage at the plug prior to the regulator. Once verified that it is defective, the following procedure will provide access to the stator.

Remove the top engine cover via loosening the four bolts, two in front and two near the rear of the engine. You will also need to remove the fuel pump from the cover and removing the dipstick support fastener. Once the cover is off, remove the bolt from the crankshaft located in the center of the flywheel. You will need to use something to hold the flywheel so it does not turn as you remove the bolt. A large screwdriver placed into the cast iron section of the flywheel will work fine. After the bolt is removed, you will need to use a flywheel puller to remove the it from the tapered crankshaft. A puller can be purchased at auto parts store such as Napa or an online site such as Amazon ( HERE is the LINK to order )
Briggs Stratton 19203 Flywheel Puller

The stator may now be removed via three or four fasteners and the new one installed. It is very important to use a torque wrench to tighten the flywheel so as to not crack the flywheel nor damage the bolt or crankshaft.
I hope this helps. If you have any clarification feel free to ask. You may wish to bring the machine to a qualified repair shop to properly test the stator and replace if needed. Labor should be no more than one or two hours.

Kevin

if it stops running after you let your finger off the start switch, check the rotor, rotor brushes slip rings for cleanliness. Check all wiring plugs back to the control board for tightness. The control requires a feedback from the stator, if it doesn't see it, it will shutdown. If all that checks, have someone ohm the stator windings. Then it;s your control board most likely

On a motor or generator, the stator is the non-moving frame or housing. The stator holds the stationary electrical windings.



The rotating windings are on the armature or rotor. The rotor is supported by and spins in ball or sleeve bearings that are on the end bells (or caps) of the motor assembly. Power is passed to them via brushes in the stator to slip rings or commutator on the rotor.

The stator is the series of copper windings inside the generator (does not move,). The stator will have several pairs of leads connected to the control panel. The rotor also has winding however is the center revolving shaft. The rotor creates a magnet that excites the stator. The rotor could be brush type having two or more rings where carbon brushes make contact or brushless having built-in diodes and voltage regulator (some not all). You can obtain resistance reading from your dealer to test the windings in the stator. You can easily test the brush type rotor by applying 12v (one or two amp) dc to the rings and test for good magnet at metal part of rotor ( use thin metal blade). Good luck

Mike, You must have a puller to get the stator out without damaging by other methods. If is important that proper tools are in place before we attempt as we might end up with a irrepairable damage with use of wrong tools and methods.
So do not forcea ny part out but consult and get help from a nearby tool shop for the tool to pull the stator , also you must make sure the pares required before the machine is pulled apart.

There is a tool that is used, it looks like a steering wheel puller or flywheel puller. Loosen the nut, a strap tool is handing to hold the stator still while you loosen the nut. Then using the removal tool, you pull this off. reassemble by tighting the nut. You should be able to get a puller at autozone in the loan a tool program. I hope this helps