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Electrical / Re: Newtronics ignition YAM3
« Last post by nk140 on Today at 12:46:34 PM »
UPDATE!

I had another buddy come by tonight, if only to help cast some positive waves around in the garage. I welded the rotor back onto the tubing, and reinstalled it. Better but still not running, I read somewhere in the forums that somebody put the rotor on 180 deg. out and so I flipped it 180 sprayed a little starting fluid in the carbs and THE BEAST LIVES!!

It still needs some tuning, but thanks to you guys I have a starting point (no pun intended) instead of being completely in the dark.

NOTE: to anybody taking the assembly apart, make sure to mark where the tubing on the rotor is in relation to the advance mechanism.

Cheers.  ;D

I have put the rotor in 180* out before.  It took forever to figure that out.  Glad you got it sorted.
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Electrical / Re: Newtronics ignition YAM3
« Last post by CallaghanWilliams on November 14, 2019, 12:39:25 AM »
UPDATE!

I had another buddy come by tonight, if only to help cast some positive waves around in the garage. I welded the rotor back onto the tubing, and reinstalled it. Better but still not running, I read somewhere in the forums that somebody put the rotor on 180 deg. out and so I flipped it 180 sprayed a little starting fluid in the carbs and THE BEAST LIVES!!

It still needs some tuning, but thanks to you guys I have a starting point (no pun intended) instead of being completely in the dark.

NOTE: to anybody taking the assembly apart, make sure to mark where the tubing on the rotor is in relation to the advance mechanism.

Cheers.  ;D
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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by guylr on November 13, 2019, 08:26:47 PM »
Very true that the most desirable parts like fuel tanks, mufflers and instruments are no longer available after 40+ years but a lot of necessary hardware, seals, bearings, gaskets, jets, clutch plates etc. are still around. The 70s models did get a bit of a gift however when Yamaha resurrected the SR400 to sell around the world. Those bikes use a lot of updated vintage parts, now back in stock, that will work on our bikes. Look at pieces like the levers and perches, switch assemblies, headlight parts and even the front fender can be adapted to the XS500.

Guy
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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by lumpy252 on November 13, 2019, 07:40:56 PM »
Cheers Guy I usually look at dealer sites in the uk and find most things discontinued . I will check out your suggestions.
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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by guylr on November 13, 2019, 06:31:05 PM »
You guys do know that you can go to the Yamaha website or many dealer sites that have the catalogs online. Learn to use them and you will be able to see what parts are still available at dealers and fit other models and which ones you'll need to search for in the wild.

The Yamaha site is a bit clunky (even though I worked on the content for it) but fairly clean and easy to use. I like Babbit's and others like Yamahapartsnation that use the same engine because they allow you to find what other models a part will fit and that helps you search online for it by listing those bikes.
Babbitsonline.com 
Yamahapartsnation.com
Shopyamaha/parts.com

Guy
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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by lumpy252 on November 12, 2019, 08:14:35 PM »
Good work on the part numbers , and keep us posted on how you progress Callaghan .
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Electrical / Re: Newtronics ignition YAM3
« Last post by CallaghanWilliams on November 12, 2019, 07:56:06 PM »
I recently, with the help of a friend who knows more than me, found that the rotor plate has broken loose on my newtronics unit. Thankfully because of you guys, and the fact that I have a TIG welder in my garage. I think I can put it back together and make it run again. Here's to hoping.

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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by CallaghanWilliams on November 12, 2019, 07:14:54 PM »
The Part Numbers for anyone interested in what I ordered are as follows.
From the Yamaha Schematics

Starter Motor Assembly
Ref 10. Pin Dowel 93615-12088-00 QTY 3

Ref 11. Cap. 1J7-15583-01-00 QTY 3

Ref 12. Spring 341-1558 or 90501-03298-00 QTY 3

Found the Springs and Caps from a relatively local dealer here in NC called CarolinaCycle in Waynesville NC.
www.carolinacycle.com

And Found the Springs (part #90501-03298-00) from www.MotoSport.com
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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by CallaghanWilliams on November 12, 2019, 07:09:03 PM »
Thanks for the replies fellas, I looked up the schematics for that starter clutch assembly and order the appropriate parts from a couple sources for a rebuild on that assembly. I will order a fly wheel puller soon.
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Engine & Transmission / Re: starter clutch more of the same tx trouble
« Last post by lumpy252 on November 10, 2019, 09:39:41 AM »
As for the yambits starter clutch repair kit yes the one that I got has disappeared from the site . The xs400 kit looks the same though I cannot say if it will be compatible as I have not tried it. The springs only replacement seems the best option for you considering the repair kits are getting rare. As I mentioned I did get these springs as an after thought as I chanced across some after doing the repair .
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