my yy250t not charging By accord911 (Read 2,349 times)

[accord911]

hello my yy250t scooter not charging the battery. someone told me to check my ground wire to the battery, at first no continuity i sanded the frame where the green wire was mounted and got continuity. I install a new battery and rode the bike about a hour or two. I stop and went into the store, came back out and the bike didn"t want to start but i waited about 20 sec and it started then I shut it down. It didn't start back up so a guy checked the battery and it was low. He said the battery was dropping voltage while running. I got it home and checked for voltage at the rectifier and the black wire was 12 volts the red and grn didn't show no voltage, The yellow wires coming out the starter was also no voltage. please help no clue......

[cruiser]

Welcome to the forum, accord911. The red wire at the regulator/rectifier (R/R) is the output and should show at least 13.5 volts DC and more with the engine running. Black is the battery voltage and green is ground. The 3 yellows coming from the output of the stator should be showing AC voltage. HERE is a good troubleshooting flow chart of the stator and charging system.

I would assume your headlights also were not working?

[JR]

Welcome to the forum! Cruiser gave you the test for the stator and it's right on. Of course the readings on thre stator are with it running. You check the voltages from yellow to yellow not to ground and they should all be very close to equal.

Also here is another thing that goes wrong in the system and it's the blocking diode in this picture;



It is a check valve as we say and allows charging voltage to go to the battery but doesn't allow the battery voltage to go back to the R/R. If it has went out it's like a blown fuse.


I'll ask the same thing as Cruiser, are your headlights working? Simple way to check the diode is to ohm it for continuity or simply unplug it and jump the two wires that plug in and then start the scooter and take a voltage reading at the battery with the scooter running. Don't pannick when you jump it the head/tail lights will come on. If it starts charging then you've got it, just replace the diode.

JR

[accord911]

thanks so much i will try both of you guys info and let you know what happens.

[accord911]

I checked the continuity on the diode and my meter did not read, so i jumped the two wires at the plug and my head lights came on. I started the bike and the voltage went up. I looked for that part and i saw a relay for my bike on scooterparts4less is that the same thing. If so can i use a 5 pin relay.

[JR]

No no! The diode is called a relay at times but it only is two wires like this one;

.curtisparts.com/Moped_Web/GY6_Relay.htm" rel="nofollow" target="_blank">.curtisparts.com/Moped_Web/GY6_Relay.htm

or at the site you mentioned;

.scooterparts4less.com/Moped_Web/GY6_Relay.htm" rel="nofollow" target="_blank">.scooterparts4less.com/Moped_Web/GY6_Relay.htm

Does your diode have the pigtail on it like the above ones listed or does the one on your scooter have the female that the plug just plugs into?

You can make this one work.

JR

[accord911]

yes , you just plug into the diode. so how can i make it work

[accord911]

no pigtail

[JR]

Look at the diode's plug and see if the pigtail plugs on the ones we listed are the same? if not then we got to find the same one as yours or you'll have to cut and splice it in.

JR

[damin69]

May 9, 2012 21:09:13 GMT -6 accord911 said:

yes , you just plug into the diode. so how can i make it work

If I get what you are asking for here is the link on how to convert from Diode to a standard Relay.

thescooterprofessor.proboards.com/index.cgi?board=250e&action=display&thread=285

[cruiser]

May 9, 2012 21:09:13 GMT -6 accord911 said:

yes , you just plug into the diode. so how can i make it work

Sounds like you need this diode:

.monsterscooterparts.com/diode.html" rel="nofollow" target="_blank">.monsterscooterparts.com/diode.html

[alleyoop]

Got to say you TWO GUYS are excellent GOOGLERS and great guys helping someone find the right parts.
KUDOS TO YOU BOTH.
Alleyoop

[JR]

Another one:

.smmotorsports.net/engine-parts-50cc?page=shop.product_details&flypage=flypage.tpl&product_id=31&category_id=11" rel="nofollow" target="_blank">.smmotorsports.net/engine-parts-50cc?page=shop.product_details&flypage=flypage.tpl&product_id=31&category_id=11

[cruiser]

May 10, 2012 14:55:39 GMT -6 alleyoop said:

Got to say you TWO GUYS are excellent GOOGLERS and great guys helping someone find the right parts.
KUDOS TO YOU BOTH.
Alleyoop

Thanks for the kudos, Alley. Googling is easy. The detailed answers and research you give to our members is a lot harder. Kudos back to ya, bud.