DT 300 - fail to start - TPS voltage value at 0 position ?

[Henry]

You haven't an electric shop in Brussels to fix a PM field starter? There is not that much to the thing? Brushes and bearings is about it. Personally, I would disassemble, inspect, clean, lubricate, redress or replace brushes before replacing.

I disassembled it ! Some 2 magnets have collapsed inside the housing when I took the rotor off, they were hold by the rotor, as soon as I took it off the magnets broke.
Dead

[Henry]

As CROSSBOLT says, either refurbish or take one aftermarket starter motor. Safes you idle time.
Had good experience lately.

Sounds good to me, I'll order one aftermarket.

Edit : done, ordered the one you suggested fro Ebay

[CROSSBOLT]

I disassembled it ! Some 2 magnets have collapsed inside the housing when I took the rotor off, they were hold by the rotor, as soon as I took it off the magnets broke.
Dead

Yow!  That is pretty bad! No wonder you were having start(er) problems. Too bad the magnets are broken...could have epoxied them back in.

Years back, when inverter generators were coming more popular, there was an enormous recall on one brand caused by magnets on the rotor coming unglued! Seems the epoxy was not mixed right at the factory....

[Ruffus]

Yep, sometimes you have to chip in. I have one of two in storage, most likely will never need them.
Have a nice Sylvester🍾🥂

[mousejunks]

I disassembled it ! Some 2 magnets have collapsed inside the housing when I took the rotor off, they were hold by the rotor, as soon as I took it off the magnets broke.
Dead

Any photos?

[Manuel Dupe]

Hello Henry,

Thank you very much for your investigation. I was ready to buy the diagnostic tool to perform the tests you documented in this thread.

In the end, I came to the same conclusion: my starter motor does not work properly once it gets hot. I live in the south of Spain, and especially during the summer, the problem becomes much more noticeable.

Without hesitation, I have ordered a new starter motor to replace the current one.

I know this is an old thread, but I didn't want to miss the opportunity to thank you for all the work you put into it.

My scooter is a Xciting S 400.

Thank you.

[Ruffus]

Manuel Dupe thank you for your input.

 Its nice to hear from Spain.
Which one you got and where did you order in your country.
Stay with us once in a while.

[Manuel Dupe]

Hello Ruffus,

Thank you very much for your reply. Your contribution was crucial in identifying the cause of the problem.

I have ordered the starter motor from the online store UbricarMotos, a supplier I regularly use for parts and maintenance items for my scooter.

I ordered the Kymco Xciting 400 Tecnium MT159-OT187 starter motor for €52.00.

I will let you know the results once I have replaced it. I also plan to disassemble the faulty starter motor and will share the results of the teardown to see exactly what caused the failure.

Thanks again.

[Ruffus]

Txs a lot, AND if you can, pics.
Tecnium we can get here in Italy too.