The wires going to the voltage regulator keep burning up.
Bought this bike about a month ago .was told there was new stator installed. after 2 weeks bike breaks down takes it to local yamaha dealer.replaces voltage regulator and wires going to voltage regulator.takes bike out of shop and that same day all wires going to voltage regulator are toasted again. now they tell me i need a new stator. what do you think........thanks Randy.
Re: the wires going to the voltage regulator keep burning...
Common problem with poor quality parts, the regulator is the problem, the generator is working other wise you would not have fried the wiring, you answered your own question. someone telling porkies to get more money from unsuspecting client?
The regulator controls the voltage not the generator, the generator only supplys the voltage it cannot overcharge unless the regulator is not working properly, simple!
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Most front wheel vibrations are the result of lack of maintenance. Keep the tires inflated properly to keep the tires from cupping. This bike has tapered wheel bearings, front and rear. The bearings must be lubricated at 10,000 miles and whenever new tires are installed. Don't take the bike to the car wash to wash it. You will blow the grease out of the wheel bearings with the high pressure.The bearings will then rust and pit, causing them to need replacement. Nothing lasts forever, but most EVO voltage regulator problems start when the regulator comes partially unplugged from the stator at the engine case. When partially unplugged, the AC voltage from the stator will arc to the pins at the regulator connection, causing the pins to burn away. This can fry the regulator and cause the battery not to charge. Just regularly make sure the regulator stays plugged to the stator and you should have miles of troublefree riding. I own a '91 bagger I bought new. I've only replaced 2 regulators on this bike, and both were because they came partially unplugged from the stator.
The trick is to get out there and fire it up every week and run it for several minutes. Short of doing that - turn the fuel off and run the carbs out of gas before storing. Drain the old fuel out in the spring and refill with fresh fuel. You can add some fuel system cleaner/drier to the fresh fuel. Personally - I simply run the bike every week and add some fuel drier - like STP fuel treatment during winter months. I have never been a fan of the fuel stabilizers - unless you are talking about a huge volume of fuel, like on a boat. Running the bike every week keeps the battery charged, too.
The shop that did your brakes should repair/replace the caliper. He HAD to install the pads into the caliper & had to remove the caliper to install new rotor. Hold that shop accountable for the repair. And don't take NO for an answer.
Charge and load test the battery. If the battery sat dead for as little as two weeks , it could be sulfated and no good. If it is a Yuasa battery it only has a 6 month warranty , grab your receipt and race back to the dealer. They will charge and load test it three times . If it does not pass the load test you will get a new battery if it is still under warranty. Grab your voltmeter and unplug the plug with three yellow wires that is coming out of your stator. The three yellow wires coming from the stator should have continuity with each other and no continuity between any of the yellow wires and ground. That is the test for the stator. If the stator is good , the battery is good , then you probably have a bad regulator/rectifier. I suspect you just have a bad battery.
Jeff WRONG!!!!!! I would demand that the dealer give you new batteries (they should be under a six month warranty anyway) You are to NEVER repeat NEVER leave the charger or chair plugged in all the time. The most you should ever have to charge the batteries is overnite or 12 hours. Never leave the charger plugged into the chair more than 24 hours. Doing so might even void the warranty. Tell that dealer or however told you that to take a hike or at least know what they are talking about. Have them read an owners manual (if they can read) under care and use of batteries Geez it just upsets me to have people give out such bad information to their customers. Now the batteries need to be replaced and when you get new ones charge them before you use the chair then charge then everynight if you use the chair daily if you don't use it daily make sure it is fully charged when you put it up and at least once week (if idle that long). I would recommend using your chair daily for a little while to run the batteries down some and then charging overnite for the first 20 days that you have the new batteries this will break them in. Hope this helps and sorry for the rant
corroded, burned, loose connection from the stator to the regulator (likely);
faulty stator (least likely).
The stator would be producing relatively high AC voltage while revving the bike. The stator output AC voltage are fed to the rectifier / regulator through 3 white wires. Check calls for testiing for the presence of the AC voltage on any pairing of the white wires before and after the connector before the voltage regulator. Check on the regulator calls for checking the battery voltage when revving the bike (14.5 VDC).