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Thank you JR that information is very helpful in helping me understand my scooter a little better. this morning on my way the bike tried to die on me a few times but i kept a steady hand on the throttle and never let off of it which kept it alive. After work I drove it out of the parking lot and when I stopped for security to let me out, the scooter died and it took about 8 attempts to get her back on. I then rode her out towards the dealer by my work and again keeping on the throttle the whole time kept her from dying. When I got to the dealer I was looking for a fuel filter, he only had 1 size and they were $3.00, he told me I should change it about once per year. I had him look at the bike and he started it and turned it off and back on about 5 times and it gave no trouble. And it sat in idle without dying. He said if it was having trouble starting all the time he'd recommend adjusting the valves but even adjusting them wont fix my problem. He said I shouldnt ride my bike at 75mph...I've been doing this since i reached the 500mile mark on my odometer. He said I should avoid going over 60-65 max and that 55 is a good speed for these scoots. Basically he said the fuel pump works from the motor and since I ride it with the throttle fully open Im basically burning the gas without giving the fuel pump time to prime the carburetor..(if I'm even saying this right). He described it as a balance, at slower speeds the pump is priming the carburetor and the higher the speeds the faster its being used to the point that at slower speeds the carb isnt primed and acts like it doesnt have fuel. He told me take it easy and drive it around and after a while my problem should go away.

Has anyone else ever heard of this before?

Whid, where did you go to look at so many fuel filters?

Hi Whid,

Im in North valley by AMC 30. I love riding my scooter I've just had so many problems with it since I bought it and the warranties on these things are...well...borderline useless lol. I've had to replace my front brake because the ABS had a very slight drip, and I didnt notice it til it had little resistance. Theres a place my dealer referred me to over by 7thst and where i-10w meet. The gentleman at the shop told me that the ABS leaking is a common problem w scooters. So be sure to keep an eye on it. I also heard some rattling in the back. If you look on the right hand side of your rear wheel you see the silver bracket that holds the rear wheel. It forms like a funky triangle. I had the top bolt break in my engine block and the one below it wiggled out. My exhaust was rattling and hanging on by the one bolt closes to the center of the rear tire. Since your commutes are short I would recommend just giving each bolt on your bike a lil torque down at least once per month. what color is your scooter and where did you get it at? Also if you need help takin her apart or putting the puzzlebox back together let me know I've done it about dozen times already.

Today I road my scooter to work on the freeway about 25 miles one way..no issues all is good.
On my way home about 8 miles into my trip Im riding about 75mph in the carpool lane (nothing unusual) and my scooter starts to cut out again like its not getting fuel. So i pull all the way over to the far right lane ease up on the gas til I reach about 25 mph...Im in the shoulder lane keeping an easy steady throttle and my bike is deciding whether to die or accelerate. it does some jerky movements then before I come to a stop it decides to go. i maintain a speed of about 40mph before I merge back into traffic. The rest of the trip I kept it at 55mph and during this time it sputtered a couple times but continued and I made it home. Now...during my lunch atwork today I put about half a container of that gumout carb cleaner into an empty tank and then filled her up. Here are my questions:

1. Do these things have a fuel filter, if so where would it be located?
2. How often do these things need to be tuned up: change plug, adjust carburetor?
3. with all the vibrations from riding could the carburetor fuel/air adjustment screws get loose and turn...Im assuming such an adjustment is possible?
4. Any other suggestions what this could be?

Thanks,

Well, I'm in Phx AZ and its not hot or cold this time of year. I ride my 2012 Jonway 250cc yy250t 54b 50 miles round trip every day. Monday night about 11pm I changed my oil from a regular valvoline oil to a mobile synthetic. I have about 2400 miles on it and bought it brand new 08/14/12. Today on my way home my scooter started slowing down and came to a complete stop. My gas tank is half full, the temp gauge never went above half way. I checked my oil and the stick wasnt wet. I dipped my screwdriver in and there was a little oil in there but it was not full like it was on Monday night. I put oil in and it still wont start, it keeps trying but it wont fire up. I looked under the seat and when I move the throttle I can see the throttle moving on the carburetor. I'm going to put the battery on a charger since its low now from the attempts to start. I took several photos and around the rear tire and notice a black residue which could be a leak. But its on the side where the gear oil goes. Here are my pics please give me direction where to go. I do not think its electrical but hey you never know. Thanks.


Just replaced with this


Here is the gear oil I changed this out at the 500 mile mark from breaking it in:


Motor Oil dip stick


Top right of rear tire:


Right side Rear view of rear tire:


Rear underside view of rear tire:


Left side of rear tire:


Left side top view of rear tire:


Left side rear view of rear tire:


Left side under side view of rear tire:

Well here's the update. I took her all apart and checked all my connections to the ignition and the cdi and everything is good. When I start troubleshooting electrical I always use my testing light first then multimeter if needed. Well, Since I couldnt locate my testing light I only used the voltmeter as a way of looking for live wires. Well, going back to what you said JR. about chinese fuses are misleading...well, thats all it was. I replaced the fuse and started up just fine. The only reason I saw voltage on my voltmeter is because I had the probes on both sides of the fuses which was bridging the circuit. I appreciate all the help and advice. This was a timely lesson learned and I WONT make that mistake again. Thanks again.

First I want thank all of you for your contribution and advice I did some trouble shooting with the information provided BEFORE i start taking this thing apart. Here are some pictures and questions.
First...all fuses here are in good shape:


Second: in line fuse from battery is good


Third: Battery Voltage good


Fourth: Voltage coming off inline fuse from battery:


Fifth: Voltage at the starter solenoid looks good:


Sixth: I used my voltmeter at the fuse box at got a reading of 1 volt. I couldn't find my light tester at the time... I did eventually find it and disconnected the connection to the fuse box and the light tester wouldn't light up:


seventh: I double checked my light tester with the battery and its not my tester



So with this newfound knowledge since I now know there is NO power going to the fuse block where does the rest of this wire harness go to and what part of the bike do i have to take apart to get to it?

richardthescooter3 - I squeezed both brakes with the key in the on position and no brake lights.

Wheezy - where would is the starting relay? Is this 10a fuse in the front end which part of the scooter would I enter to find this thing?

Cruiser - in your picture, is the CDI the black thing with fins and a bolt at the top?

Sorry for so many pictures i figured the more accurate information I can provide the better your able to help me. Thanks again!

Hello,

I have the 2012 Jonway 250cc yy250t 54B that I purchased new 08/14/12. I have broken it in properly, kept oil clean, gear oil replaced, changed coolant. I had to replace my whole front brake assembly. My first minor issue is that my horn doesnt work, every once in a while when I hit the button the horn will work but its completely random. My major problem started a 2 weeks ago when I got on my scooter and tried to start it but nothing happened. I tried to power the radio but no power was going to the stereo. I moved the bike a little bit and kept trying and then it started up. A few days later same thing happened again but it took a little longer for it to start. Then last night it seemed like it didn't want to come on and after about 30mins of moving it around I checked the battery connections and terminals are clean and not grounding out. I noticed a starter solenoid and jumped it like I used to w my old cars and she fired up. Now since last night I cannot get the scooter to start using the push button feature. I have opened up and jumped it at the solenoid. This saturday I'm going to get this fixed however...before I jump into this and start taking this puzzlebox apart I would like some direction...First i'm going to start with the fuses and inline fuse by the battery. But does my issue sound like its my solenoid (how do i test it to see if its bad?)or is it my ignition? Since I bought the scooter I have never used the alarm or remote start for fear of it draining my battery or confusing my ignition (I read other posts before buying it). Please help. thank you.

Thank you so much everyone. I found the radiator cap just as you said. lift the seat, remove 2-3 screws and a plastic panel comes off and whallah! theres the radiator cap.
Now here goes nothin!