Question about 2000 Yamaha YZF-R1

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No electrical, like the key was turned off.

New battery &stator, help!!

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Main fuse, often positioned by starter relay

Posted on Jul 25, 2013

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6ya6ya
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Posted on Jan 02, 2017

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1993 Vmax. Why is regulator/rectifier overheating?


You are not going to like this answer but here goes. All Motorcycles, mopeds, scooters, quads, etc, that have have a stator to regulator/rectifier to battery generating system all have the same design flaw. They all have lousey electrical connectors. Heres what happens: the stator produces 204-220 volt ac current. The same thing that will run an electric dryer in your home. It's a lot of power. That power gets changed to dc current by the recifier and converted into about 15 volts by the regulator in the same unit. That's a lot of heat energy. If at any time the electrical connections become compromised by vibration, oxidation, dampness, salt, or dirt...you will see the wires fry. It's an over load...not a short. Power sports shops are well aware of this and are happy to charge you list price to replace the entire system for several hundred dollars. Usually between $800-$1000. You can get after market sets of the component parts and do it yourself and that's the only way I know of to avoid the cost & it still ain't cheap. Many moto-X riders replace the connectors with automotive plugs that seal out water, dust, etc with a recessed plug with a silicon gasket and seal it with dielectric grease to prevent oxidation. Like the plugs on a car's O2 sensors. Hope this has been helpful, Sorry to be the bearer of bad news.

Jul 31, 2015 | Yamaha Motorcycles

1 Answer

Start no electrical, bike died like the key was shut off. No electrical what so ever


battery flat if voltage regulater faulty it wont charge the battery

Jul 20, 2013 | 2000 Yamaha YZF-R1

1 Answer

Need some spark in my life


Check your start fuse. Its a 20 or 30 amp. Just behind engine.

May 25, 2012 | Murray Garden

2 Answers

1982 Yamaha XJ 550, the battery will not take a charge. New battery, checked all connections, ran all the tests (stator, brushes, and alternator). Replaced the voltage regulator/recifier. Not sure what is...


It is corrected properly, right? + to the wiring harness and - to ground ... right? Are you certain about the rectifier? Is the battery charged at this time?

You know a alternator cannot make power unless you first put power into it ... right? Alternators (unlike most generators) are not self exciting. If your battery is weak or "dead", the alternator cannot make electricity to charge the battery. I don't know what the rating of your alternator is. Your battery should be fully charged before you do any more tests. If you have a 1 amp charger, allow at least 10 hours for a full charge. Don't cook your battery with a big, powerful, fast charging automotive battery charger.

Good luck with your repair ... I hope you find this response helpful.

Thanks for your question @ FixYa.com

May 02, 2011 | Yamaha XJ 650 Motorcycles

2 Answers

FUSE IS GOOD BATTERY HAS LIFE BRAKE LIGHT IS ON. YAMAHA BWS 2004


Yes instrument lights at least should come on.
Power goes from the battery to the ignition switch via the main fuse, & then splits to ignition & lights (via auxiliary fuses if present) which are separate circuits.
The problem could be an auxiliary fuse (if fitted) then contacts inside the ignition switch or wiring/connections from the ignition switch out to the ignition circuit
That is presuming the cluster light bulbs work!

Hope this helps ( if so please mark as very helpful)
Ride Safe
Bike-Doc

Apr 15, 2010 | 2005 Yamaha DT 125 X

1 Answer

New 2008 TT-R 125L won't start, electric start. Puzzled. Is there more that the key to start, on/off switch?


check the battery should atleast turn over but if its turning over then pull the plug put the plug in the plug cap and turn it over this is called checking the fire if no fire could be stator magneto or electrical and good luck but if u a little spark try a new plug blue spark bright is good if that dont help it would be fuel problem go through the carb and clean out all the jets

Feb 07, 2010 | 2005 Yamaha TT-R 125 L

1 Answer

Craftsman lawn tractor model new battery drains quickly...


it could be the stator in the engine check the voltage with the volt meter when its running if its low check connections on battery & voltage if its below 12.5 volts then its the stator but the only thing is the engine should run with-out the battery so there is something else going on there is a fuse in the electrical system if theres a short that fuse will blow & engine will stall

Jun 07, 2009 | Craftsman 24 Hp 48" Deck Yard Tractor

1 Answer

2005 Hartford HD-125S electrics not working


Hi, Ratbag1488 before testing any electrical component in the Charging System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amperage and must be replaced AGM types more so than lead acid batteries.
1. Battery Test:
The battery needs to be a fully charged and load tested to ensure proper readings, connections need to be clean and tight. If you are not working with a fully charged and functional battery, all other voltage tests will be incorrect. Standing battery Voltage should be 12.5-13.2 DCV.
2. Charging System Voltage Test:
Start motorcycle, measure DC volts across the battery terminals you should have a reading of approximately 13.2-15 DC Volts.
3. Connections and wires:
Inspect the regulator stator plug, and check the battery terminals for connection corrosion. If everything seems to be in order, move on to number 4 below to determine if there's a failed component.
4. Stator Checks/Rotor Check: Each of the following tests isolates the Stator & Rotor. If AC output and resistance test fail and stator test passes then the rotor is at fault (Pull Primary covers and inspect rotor for damage).
5. AC Output Check:
Unplug the regulator plug from the stator start motorcycle and change Voltmeter to AC volts. Probe both stator wires with your meter lead. The motorcycle should be putting out approximately 18-20 ACV per 1,000 rpm. Reading will vary depending on system, check service manual specification
Generic Specs:
22 amp system produces about 19-26 VAC per 1,000 rpm
32 amp system produces about 16-20 VAC per 1,000 rpm
45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
Switch your multimeter to Ohm x 1 scale. Probe each stator wires with meter leads and check resistance on the meter.
Resistance should be in the range of 0.1-0.5 Ohms. Reading will vary depending on the system, check the service manual for specifications.
Generic Specs:
22 amp system produces about 0.2 to 0.4 ohms
32 amp system produces about 0.1 to 0.2 ohms
45 amp system produces about 0.1 to 0.2 ohms
Stator Ground Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wire with your positive lead on the multimeter and the negative to ground.
There should be no continuity to ground on either wire.
If there is continuity your stator is shorted to ground and must be replaced.
5. Regulator Test:
Each of the following tests isolates the regulator only, so if any of these tests fail, the regulator is at fault.
Identifying Wires:
Battery Charge Lead- Wire going from regulator to battery positive.
AC output leads- Wires coming from the Stator to the regulator.
Ground- Wire from Regulator to ground or regulator may be grounded via the physical bolting to chassis.
Regulator Ground Test: Ensure the regulator body is grounded or grounding wire is fastened tightly to a good ground (you should verify this by checking continuity from regulator body to chassis ground).
Fwd/Reverse Bias Test/Diode Test:
This check is testing the Diode function to ensure it is regulating the AC current for the stator into DC Current.
Switch multimeter to Diode Scale.
Place your Multimeter positive lead on each AC output wire.
Place your multimeter negative lead on the battery Charge wire.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the AC output wires and the Positive lead on the Battery Charge Wire. The reading should be Infinite. With your meter on the same setting, place your multimeter positive lead on the regulator ground wire or to the regulator directly, and then place your meter negative lead on the AC output leads.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the regulator ground and the Positive lead on the AC output wires. The reading should be Infinite.
Note: Below is a table to show the readings:
Positive Lead Negative Lead Reading
AC output 1 Battery charge lead Voltage
AC output 2 Battery Charge Lead Voltage
Battery charge lead AC output 1 ?
Battery charge lead AC output 2 ?
Ground AC output 1 Voltage
Ground AC output 2 Voltage
AC output 1 Ground ?
AC output 2 Ground ?
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Hartford HD 125S
http://racetechelectric.com/files/pdf/rte_troubleshooting_flow_chart.pdf
Reading Hartford Hd 125 Super 2009 Manuals
CHINESE SC HARTFORD HD 125 LEGION 2005 2009 Spares Parts Accessories
Hartford HD 125S 2007

Jul 11, 2017 | 2005 Hartford HD-125S

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