replacing the stator By jackryan172 (Read 1,074 times)

[jackryan172]

Hi All,

If you have been following my thread over on the dawg board, you know mac told me to check out over here as most of the 250 knowledge came here, so I finally am moving

Anyway I am replacing the stator after following the troubleshooting tree on here. I also replaced the blocking diode and the Regulator rectifier, as the rectifier was tested and didnt pass and the blocking diode had melted plastic on the wires coming off of it.

Anyway, Im going to start putting it back together today, (what a mess, half the bike had to come apart to get to it), and discovered that the gasket between the cover that holds the stator and the block is trashed beyond reuse. Can I use an alternate of some kind? (Copper rtv or or something) I need my bike back together as it is my primary means of transport, otherwise I would order a new one and wait.

Thanks,
Sean

[tvnacman]

Sean, welcome .
What were the results of the stator test . I'm not to sure you needed to tare the bike down that far . I dought you needed the stator . It almost doesn't add up , with a bad regulator , blocking diode and stator . With a bad stator you can't test the regulator , the blocking diode you can check with a diode check fuction on a dmm . With a dmm you can check the stator . Seems like someone is eager to sell you parts or your eager to change parts .

Please don't take this reply the wrong way I'm not talking down to you . It just doesn't seem right .

As far as the gasket is concerned I would think you could get away with a substitute . I don't own a 250cc and have not worked on them . Hang around see what JR and or Cruiser has to say . I'm pretty good with electric so I help with what I can understand from the diagrams , I'm learning other things from the forums . I have a handfull of guys I listen to intently most of the others , I just shake my head .

John

[jackryan172]

Hi john,

The regulator was tested off of the bike, and the stator had on average 4.5 ohms across the plug connector pins.

Sean

[tvnacman]

ohm checking regulators , is not the way to go . The regulators have a capactor on the output red wire . that will give you different readings at different temptures . Put it in the freezer for a half hour and do the test again same for the stator , temp effects the resistance in the wires/windings . Its done save it for a spare . the stators I don't go by resistances I go by balanced output on the 3 yellows while running disconnected from the regulator .

John

[JR]

This is the test he's talking about John and it's a very reliable test:

thescooterprofessor.proboards.com/index.cgi?board=250e&action=display&thread=152

Key thing is making sure each set of coils or phases test the same. The 18 coils are divided out in 3 sets of 6 each and at 5k RPM produce up to 60Vac from leg to leg.

JR

[tvnacman]

JR , I agree with the test for the stator , it is/was the regulator test I'm questioning . The stator papers are a good test , I do it differently .

John

[JR]

Oct 7, 2012 10:05:06 GMT -6 jackryan172 said:

Hi All,

If you have been following my thread over on the dawg board, you know mac told me to check out over here as most of the 250 knowledge came here, so I finally am moving

Anyway I am replacing the stator after following the troubleshooting tree on here. I also replaced the blocking diode and the Regulator rectifier, as the rectifier was tested and didnt pass and the blocking diode had melted plastic on the wires coming off of it.

Anyway, Im going to start putting it back together today, (what a mess, half the bike had to come apart to get to it), and discovered that the gasket between the cover that holds the stator and the block is trashed beyond reuse. Can I use an alternate of some kind? (Copper rtv or or something) I need my bike back together as it is my primary means of transport, otherwise I would order a new one and wait.

Thanks,
Sean

Sean I would use the old gasket and red gasket maker silicone.

JR

[jackryan172]

well I started to put it back together yesterday and broke one of the banjo bolts for the external oil line so Im really stuck now.

Sean

[jackryan172]

I cant believe how much effort it took to find these bolts. they are the banjo bolts for the external oil line. ended up getting them off ebay. wow what a hassle.

[JR]

Sean which line are you talking about?

[jackryan172]

its the hard oil line that runs from the front of the engine around to the stator side and then up to cylinder head cover.

Sean

[jackryan172]

well I have started putting everything back togeather. While I have everything apart I added a UNI air filter to replace that stupid breather box air filter assembly. I tried to start it and found that a vacuum line on the intake manifold was now un capped. I plugged that and now Im trying to figure out why it wont start. it turns over and it started for a second or two but as soon as I added throttle it died. do I need to adjust the air fuel mixture or something?

Sean

[alleyoop]

Yes, you are now getting to much air and not enough gas due to the UNI Filter. Now let me ask this did you OIL the uni or is it NOT OILED. If you Oil it it will restrict some of the air, but you will have to adjust the FUEL RATIO MIXTURE screw.
Alleyoop

[jackryan172]

it is not oiled. I guess I need to go find the fuel air screw.

Thanks
Sean

[alleyoop]

Here is what most likely your carb looks like:
Alleyoop