Hi
I have a very strange problem with my selunoid TR1 -81. The problem started with the selunoid sometimes did not activate. I decided to replace it with a new one. But even the new one will not activate untill I help it a little bit. I have a new battery full charged. There is one wiring in the selunoid wich is connected to the starter, could it be some thing wrong with that.

Very thankfull to all help I can get.

Hi there!

I guess you know how to work with a multimeter ? If so check whether the wire between the solenoid and the starter is ok.

It sometimes happens (been there, done that) that due to a faulty solenoid, there's not enough juice coming through and one of the windings on the starter burns out. If that happens you're down sh*tcreek.

That said, if you attach a set of jump leads to the bike, black (-) goes to the frame and red (+) directly to the bolt, where the cable of the solenoid is screwed in, the starter should spin. It will not engage, because the solenoid also pushes the starter sprocket in gear with the starter ring on the crankshaft, but this doesn't matter because it is just to proof that the starter is still working.

That said, even new solenoids can be broken.

If you have a XV1000/TR1/XV920R, you may use the solenoid of an Suzuki LJ80/SJ413 (or other Suzukis with the same solenoid, IIRC the Swift was also among those), because they're a lot cheaper than the OEM Yamaha part.

To sum it up:
(always assuming that you have check ALL THE connectors beforehand and have cleaned them and greased them with some di-electric grease)

check the starter, if it doesn't work -> new starter
if it does work -> new solenoid (it's only around 10GBP new, you probably can get it for a quid at the breaker's)
if it still doesn't work -> check the battery again, probably it is too weak, even though it is freshly charged!

Cheers,
Greg

I have mesured the coil of the solenoid. The coil furthest out mesure 1.1 ohm The inner coil messure 0,3ohm. When I test it it still not work untill I pusch on a little bit. I also checked the starter with a wire direct from + of the battery, now even that thing will not work.

I now dismount the starter from the engine. I´m getting tired of this shit.

I will continue, the story is not over yet. But if someone have more tips and trix please let me know.  

Hello,
i had a similar problem with my Tr and lately with the bike of a friend. The solenoid did not work.
In both cases the startermotor causes the problem. It seems, that the solenoid needs the power (magnetic field?) of the starter to have a correct funktion. I can´t explain why this is so-may be an elektrician can. In my case i bought a new starter, which not only solved the problem, it just works much better now.
Ali

Yes now I understand how everything works together, I just cleaned the coppar on the rotor (starter) where the colborstar is conected.

Yes you have right Ali the solenoid is only working if the starter is OK and connected. If you try to test the solenoid without the starter you just use one of the coil of the solenoid.  And that is not sufficient for the solenoid to draw.

When the starter is connected the solenoid use both of the coil, and just when the solenoid is drawen, the starter will release one of the coil. But one is enough to hold the solenoid in position. And when you release the start button the solenoid will go back and the starter stops.

It took me several ours and lots of profanity, but it was a good lesson.

Thank you for all help, and hopefull I have explaned how it works right. It´s my conclusen.