well, it's a chinese 2005 model of some sort. a friend of mine might still have the quad i fixed for him that's identical to yours. i'll see if he has any markings on his lil quad.

 

Ah okay, I see the Yun Ba must refer to the alarm alone and not the actual make of the quad. I really don't care what make it is as long as it runs, I thought it might be easier if we knew the exact details but it seems many of these chinese quads are very similar.

I'll check a few things in a couple hours when I get home and I'll let you know what happens.

Thanks again for your time,
Brandon

 

most chinese quads share parts and most interchange with each other. main things are like this, 4 pin CDI and which style stator you have.

 

I just had the same problem with the tether switch I workrd and ohm checked every thing I had another Cdi box thinking maybe that was the problem well I made sure it was an ac not dc system before i put one on it i took original out and put mine from my quad witch is also a roketa the old box off the one i was haveing trouble with worked thats when I ran a power lead to coil from hot on battery I got spark at plug but dont wire it this way you will burn out coil so I know coil worked I went to the tether switch and stripped away insuatio away on both wires and tied the to together and I had spark so we eliminated the switch and Butt connected the to wires to the tether needless to say My son was very happy with me getting to now ride his quad,So check that out
and let me know what you find.

 

Well some good news, me and my nephew took about an hour tonight and checked all the switches and wiring found a few loose connections and broken spark plug wire. Anyways we kinda rigged it up for a test and did get spark at the plug. So we poured some fresh gas in and it started up after a few tries. It only ran for a bit and then I broke the fuel line at the filter trying to move the choke lever.

Anyways, now that it will at least start up we went and ordered a new battery, ignition coil with plug wire, spark plug, air and fuel filters for a little tune up. Also think it is worthwhile to pull apart the car and give it a good cleaning after all these years.

In the end it didn't take much but I really appreciate your help with this. Now I have a good idea of how the bike is setup and should be able to fix it again if something comes up.

Thanks very much!

 

your welcome i hope all works out for you as it did myself

 

Did the atv come with a keychain starter/kill switch?
That alarm is also a remote start and kill system. It can be removed but there are 2 wires you will need to jump. I believe they are pink and brown don't quote me on that directly as they may be diferent on your brand. Post a pic of the plug that goes to the alarm and I beleieve I can figure it out. I have an atv that is wired for the alarm/starter/kill switch but did not come with one so it had the jumper from factory.

I would check the connection at the teather kill switch. If its just a butt connector there is a better than good chance the connection is bad.
Check the kill switch on the handlebars as well, if there is 4 wires going to the switch 2 will be connected when running and 2 connected when turned off. The 2 connected when off is the same as the kill switch on the handlebars and essentially shorts out the cdi to kill the engine.

Take your volt meter and check the tab on the coil and ground. This will tell you if you have a pulse to the coil when your cranking it over as well. Be sure to set your meter on the highest voltage setting and watch for the power spikes. I wouldn't worry about the reading so much as the fact that your cdi is putting one out. Having a tach connected to the terminal on the coil is a very handy indicator that your coil is getting a trigger current since it doesn't actually measure engine speed but the pulse sent to the coil from the cdi.

 

Hi again,

Thanks for the response but I think you missed my post when I mentioned that I did get it running the other night after some suggestions posted here.

So it will start and run at this point which is great. I went ahead and ordered some parts for a tune up ( filters, plug, coil & wire, battery, etc..) and hope to take my nephew for his first ride next weekend.

Thanks again for the help fellas, hopefully I don't need to keep coming back here but at least I know this is a great resource in case anything else happens.

Have a great day,
Brandon

 

Thanks again guys, got the new parts on today for a tune up, checked all the nuts and bolts and took it out for a test ride. I must admit it's more powerful than I had expected for a little quad. I'll have to screw in the throttle stop a bit for my nephew to start out.

 

Also picked this up the other day for barely anything in great shape, what a cool old bike.



1986 Suzuki JR 50