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Sep 26th 2017, 10:14 PM   #1
 Pavement Tested's Avatar
  Jan 2016

  '08 GSX1300R, '06 GSX-R 750, '17 KTM 690 Duke
Exclamation PSA - 2004 thru 2015 R1 and FZ owners READ THIS

I'm working on an 08 YZF-R1 that had charging system issues. Turns out the generator, specifically the rotor assembly failed.

The rotor assemblies in the earlier years were poorly designed and when they fail it gets costly. When they fail, the glue that holds in the magnets lets go and the magnets start to float around, chip and grind things up. Pieces of magnet go EVERYWHERE.

The good news is that Yamaha figured it out some time after 2008 and redesigned the rotor and stator assemblies. It appears that the stator assembly was superceded in 2011 and the rotor assembly was superceded in 2015.

Stator assembly OLD p/n 2D1-81410-01-00 and NEW p/n 2D1-81410-10-00 and MSRP is about $295.

Rotor assembly OLD p/n 5VY-81450-00-00 and NEW p/n 2SH-81450-00-00 and MSRP is about $490.

That's just for those 2 parts, not labor to replace them at around $110/hr at you local shop. Then factor in having to disassemble a healthy part of the engine (i.e. remove exhaust, dump oil, remove oil pan, etc) to find all the debris.

So if you own one of the following bikes, maybe get the generator inspected before it's too late. The price of a gasket is probably worth your piece of mind.

YZF-R1 2004 - 2008
FZ1 (FZS1000) 2006 - 2015
FZ8 2011 - 2013
bcj, chadams66 and curve addict like this.

Edited by Pavement Tested on Sep 27th 2017 at 12:18 AM
Sep 27th 2017, 12:15 AM   #2
 Pavement Tested's Avatar
  Jan 2016

  '08 GSX1300R, '06 GSX-R 750, '17 KTM 690 Duke
Almost forgot the pictures...

PSA - 2004 thru 2015 R1 and FZ owners READ THIS-20170926_202002.jpg PSA - 2004 thru 2015 R1 and FZ owners READ THIS-20170926_201938.jpg PSA - 2004 thru 2015 R1 and FZ owners READ THIS-20170926_201810.jpg
Sep 27th 2017, 06:23 AM   #3
 MikeMikeMike's Avatar
  Feb 2016

Wow what a mess. Did the rest of the engine survive?
Sep 27th 2017, 07:58 AM   #4
 HalcyonSon's Avatar
  Apr 2016


Best part of all that is... aluminum cases and pistons. Since the only ferrous parts are gears, cams, crank, and pumps, the magnet chunks are only going to stick to parts that they can destroy. There's literally nowhere they can go that won't harm your engine.
Sep 27th 2017, 08:42 AM   #5
 Cougar's Avatar
  Jan 2016

  Yamaha FZ1, KTM Super Duke GT, Yamaha FJR, Yamaha XS650
That's a well known issue in the FZ1 world.

Looks like my rotor has decided to spit the magnets. - FZ1OA Message Board

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