How to Identify and Resolve Common Issues ?

We offer a diverse range of insights on identifying and resolving common problems in sports. Our sources encompass academic articles, blog posts, and personal essays shared by seasoned athletes. :

To test a stator with a digital multimeter, first set the dial to the ohms setting. Then, touch the probes to the stator terminals. If the reading is infinity, then the stator is bad. If the reading is zero or close to zero, then the stator is good.
To test a stator, you use a multimeter to either run a static test on the resistance of the wires or a dynamic test on the AC voltage reading from the wires. A static test is run while the engine is switched off, while a dynamic test involves procedures while the engine is on.
Insulation Break Down Test

Take one meter lead and hook it to the connector, then take the second one and hook it to the body of the stator. The meter should say “OL” which stands for, “open line,” if it`s working correctly. If not, the stator is bad.

Create a Battery-op Ignition System for Less Than $50. The cost of a new stator can be hundreds of dollars. Without a good stator, your engine will run poorly or not at all. This solution completely bypasses the stator by using a 12 volt battery to power the ignition system.
These additional tests include voltage withstand testing, insulation resistance, polarization index and dc winding resistance measurements, as well as inter turn fault detection. They assess not only the insulation integrity, but also help to identify connection problems and weak points in the stator winding.
Testing windings for short to ground

Place one measuring pipette of the ohmmeter on the stator housing, and the other on each output of the stator winding. The measured resistance should be infinite. If any resistance value is measured, the winding insulation has broken, and the stator needs to be replaced.

When a stator fails, it is largely due to the degradation or aging of its insulation through external occurrences and materials being introduced into its system.
If the regulator rectifier can`t moderate the voltage levels, the battery will overcharge. Use a voltmeter to diagnose overcharge. If the readings are over 17 volts, it means the regulator rectifier is failing to convert the excess power. All the extra voltage could make headlights extremely bright before blowing out.
You now can test the voltage between the terminals of the stator coil at 3,000 rpm. Depending on your motorcycle, you should get a reading of anywhere between 20 and 50 volts.
To check the regulator, connect the meter leads to the bike`s battery as it`s running. The reading should not be higher than 14.5 volts or lower than 13.5 volts. If the reading is higher, this means the battery is overcharged and you may need to replace the regulator rectifier.
Re: the 3 yellow wires from stator

As was mentioned, they are the three-phase output of the alternator. The Molex style connector is what connects them to the bike`s regulator/rectifier. The contacts inside the connector were getting loose and it caused many of the alternators to overheat and fail.

They do require batteries for power, however, which is a potential drawback in comparison with a motorcycle`s alternator system. Because a stator generates its own electricity, motorcycles have systems which are relatively lightweight compared to those in a car or truck.
The battery would quickly be depleted, though, if not for the star of the charging system show, the stator. Think of your stator as the piece that makes electricity to keep your battery charged up to make all that electrical stuff on your bike work.
Without stators, the bike will receive very weak spark – since the battery cannot supply the appropriate power amount to the engine. No energy, no current; your bike will be a dead course.
The rotor-stator contacts a serious problem when any part of the moving rotor touches the stationary stator of the machine it may cause damage to both stator and rotor, as shown in Figure 8.
The stator of these devices may be either a permanent magnet or an electromagnet.
The stator current is calculated by dividing the phase voltage by the equivalent complex impedance of the entire circuit shown. The speed of the stator magnetic field in radians per second is 4xPixf/poles. The speed of the rotor (mechanical speed) is the speed of the stator magnetic field minus the slip.
Stator faults usually start as inter-turn short circuits. In fact the primary or main cause of the stator faults is insulation degradation which leads to inter-turn short circuits. When an inter-turn short circuit occurs, extremely high currents flowing in the short circuited coil cause the propagation of destruction.
The stator is the stationary part of the machine, whereas the rotor is the movable part of the machine. The stator core, stator winding and the outer frame are the three parts of the stator whereas the rotor core and field winding are the parts of the rotor. The three-phase supply is given to the winding of the stator.
Start by completely disconnecting the spindle motor from all power sources. Check each wire, including T1, T2, T3 and the ground wire. If the reading is infinite, your motor should be fine. If you get a zero reading or any continuity reading, you have either a motor problem or a cable problem.
Your battery or your ATV owner`s manual should tell you the ideal voltage. Most batteries need somewhere between 12.6 and 12.8V. Some need more. No battery is running well with less than 12.6V.
Most stators can be rewired and tested within 48 hours of us receiving them.
The most common reason an ATV is getting no spark is a bad spark plug, either the wrong plug all together or just not gapped correctly. Or the spark plug just went bad, that happens quite often and it`s normal.
Shorted turns in stator windings often do not affect the normal operation in the early stage. However, eventually that can grow into serious motor failure.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Yamaha blaster backfire badly
ANSWER : Well i have had the same problem and it was a gear on the right side of the motor. the clip came off and the motor died. i did get it started to get it home but it backfired really bad the entire time. put the gear back on and has ran like a raped ape ever since. hope this helps.

I just purchased this Yamaha boat w/Twin MR-1 140hp motors, less than 100hrs (60 prox)and the starboard motor only reached 8000rpm on a 10000 redline spec (the port motor reaches 10000rpm. I have replaced the spark plugs immediatly and now the motor reaches 9500rpm. When the plugs were replaced the plug wire top of the plugs had a black powder residue (like graphite)and #1 & 4 plug electrode end were black minimal soot and #2 & #3 had a white color residue on the ceramic.

Any suggestions to attain the full 10000rpm?

A Yamaha dealer is 100 miles, so I would like to fix myself if possible. Thanks

ANSWER : I never rec’d an answer…..I WANT A REFUND!

Yamaha breeze 125 rolled off into pond and drowned…how do i fix without having to keep changing the oil?
ANSWER : HELLO; Heres a soulution that might work for you, drain out your oil and add a gal. of solvent in the engine and slosh it around front to back, then drain it and leave the plug out for several days so most of the solvent will evaporate. Then buy cheap oil and run it in the engine and drain that out. GOOD LUCK……GREASY.

New battery just put boat in water always had a solar powered charger on battery took it off about a week ago today went to start boat battery dead. I do not know if it has altanator or what have a friend mechanic says he has a meter to test whatever, if you can send what to tes & numbers of tests & what might be bad or not hooked up. Thanks Brown
ANSWER : You will need to do 3 tests:

1 – you must find out if you have a short in the wiring: disconnect the + cable from the battery and put an ampermeter in there to close the circuit; if a current is detected it means that you have a short and it will drain the battery. To locate the short start disconnecting wires and look at the meter – when you will disconnect the wire that goes to the failed wire or part the current will stop flowing; find the faulty part and fix or replace it.2 – you must find out if the alternator is charging the battery correctly: start the motor, wait for half an hour then measure the voltage on the battery. If it’s below 14.1 volts then the alternator is failing and it will have to be replaced.3 – you must find out if the battery is in good working order: after the second test has finished shut down the engine and disconnect the battery; wait one hour and measure it -if the voltage on it has dropped to below 11.8 volts then the battery has aged and it’s no longer holding the charge so replace it.

Will not start up I have no compression but i have fire and fule. It is a Yamaha 2 stroke engine in a yamaha golf cart . Just wondering if it has a compression release on it that i’m not seeing. Garry
ANSWER : I find with two stroke engines the carb gets all gummed up if you store it for the winter. A good carb cleaning usually does the trick

How do I reset the code on a yamaha waverunner
ANSWER : How do I reset the code on dash board 99 yamaha waverunner 800?

I have a 1999 Onan Generator start/stall issue
ANSWER : Check your oil level. The unit will stay running as long as you have the switch depressed. When you get enough oil pressure a switch closes & keeps it running.