Question about 2003 Yamaha YZF-R1

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Trying to find out why my stator is burning out this is my second stator I put on 2003 r1

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  • Yamaha Master
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Hi, Rudy and the usual suspects are:
1. Excessive electrical "HEAT" aka "AMPERAGE" melts the varnish
insulation causing the coils to short out.
2. Overheating due to a faulty voltage regulator.
3. Voltage regulator not properly grounded.
4. Loose rotor magnets or stator bolts.
5. Faulty starter relay.
6. Old battery dead cell loose or corroded cables.
7. Faulty wiring in the charging circuit.
8. Excessive wattage in a batteryless system.
9. Aftermarket parts are usually substandard.
10. Headlight not designed for a motorcycle system.
Some bikes have charging systems that get the job done but just barely and will have the most failures, you can upgrade the system with quality parts and a higher output. Relocating the voltage regulator to a spot more conducive to air flow will help immensely. Regular wiring system checks for corrosion chaffed wires, rerouting harnesses that run too close to heat sources ie. cylinders-exhaust etc. is great preventive maintenance to avoid those breakdowns in the middle of nowhere at 2 in the morning.
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.
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Yamaha YZF R1P Service Manual
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Posted on May 02, 2017

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Posted on Jan 02, 2017

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SOURCE: how to remove a stator pully for a 2003 yamaha r1

HEY BUD, THERE IS ONLY ONE WAY TO PULL THE STATOR ALL BIKE COMPANIES MAKE A PULLER JUST FOR THIS PURPOSE. YOU SHOULD INVEST IN ONE THEY ONLY COST 20 TO 30 DOLLARS AND IS A LOT CHEAPER THEN THE STATOR IF TRIED ANY OTHER WAY

Posted on Aug 19, 2009

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bigguy810
  • 448 Answers

SOURCE: 2003 Yamaha R1... Replaced the

ill bet you have a alternator that is grounded out not so much the armature
the archer witch is the out side peace more than likely on the passenger side
you can see it thrue the side cover i will try to find a picbigguy810_17.jpg

Posted on May 28, 2011

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Why does the stator keep burning up on my 2003 yamaha yzf r1?


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I need to repair or replace the stator from my Yamaha r1 2003. how can I do?


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Aug 22, 2011 | 2003 Yamaha YZF-R1

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Take off a stator for 2003 yamaha R1


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2 Answers

My battery wont charge and I just bought it


Hi and welcome to FixYA,

Two possibilities:
  • rectifier / regulator combo (most likely);
  • 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).

Good luck and thank you for asking FixYa.

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How to remove a stator pully for a 2003 yamaha r1


HEY BUD, THERE IS ONLY ONE WAY TO PULL THE STATOR ALL BIKE COMPANIES MAKE A PULLER JUST FOR THIS PURPOSE. YOU SHOULD INVEST IN ONE THEY ONLY COST 20 TO 30 DOLLARS AND IS A LOT CHEAPER THEN THE STATOR IF TRIED ANY OTHER WAY

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1 Answer

2003 Yamaha R1 not charging


Stupid Question but are all your wires clean and tight connections? Also make sure your batt ground is good too. R1's can be picky like that.

Sincerely,

JC

Nov 15, 2008 | 2003 Yamaha YZF-R1

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