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Post by florida on Jan 20, 2016 9:33:16 GMT -5
I have a 139qmb longcase with a 100cc bbk, a9 cam, cdi, open air filter, a new 9amp battery ( the original was a 4 amp )
About 2 months ago the belt broke and I recently replaced it and adjusted the valves. I forgot to hook the ground wire up to the valve cover and it wouldn't start. After all this the scooter doesn't want to start sometimes using the starter switch. The starter motor doesn't make a loud click noise like it use to ( the starter is brand new ) when I press the starter switch. Sometimes the starter doesn't even spin and I have to use the kickstart to start it.
My scooter lost all power while I was driving it a few days ago. I twisted the throttle and nothing happened. It was like the battery died.
About a week before this happened I dropped a spark plug into the heat shroud and forgot about it. The next time I drove it over a railroad crossing my scooter started to make a horrible whining noise because the loose spark plug I had forgotten about got lodged in the fan and nicked up the plastic blades. I removed the spark plug. There were a few scratches and nicks in the fan shroud area on both the plastic and metal areas. I noticed the magnet had some scratches on it from the spark plug rattling around.
My scooter wont start now. When I turn the key to the on position the gas gauge needle works. I have tried to start it with both the ignition switch and the kickstart. -The starter works. It spins when I press the ignition but engine doesn't fire up. -the battery is charged -Ive got spark and gas and compression
Ive been wanting to upgrade the stator from a 6 pole to an 8 pole because I upgraded to 35w H4 lightbulbs and the lights are very dim at lower rpms.
Has anyone had the same type of trouble from leaving a sparkplug in the fan shroud area?
I have a multimeter.
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Post by tortoise on Jan 20, 2016 12:44:15 GMT -5
Yet another chronicle about desecrating an excellent Znen 139QMB into a pile of excrement!
For others considering purchasing their first scooter . . instead of "gaming the system", if 30-35 mph is not suitable for your performance expectations, save yourself a lot of expense and aggravation by initially selecting at least a 125cc.
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Post by florida on Jan 24, 2016 16:00:40 GMT -5
Bump
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Post by florida on Jan 24, 2016 16:16:41 GMT -5
So, to restate: After readjusting the valves to bigger clearances ( from .003 and .004 intake/exhaust to .004 and .004 intake/exhaust ) here is what issues I have discovered. Ive ridden the scooter about 5 miles since valve job. - the starter I can visually see spin when when I have the cvt cover off and hit the ignition button. The starter bendix of course will push itself out of its hole. What troubles me is the starter doesnt make that healthy "ch-chunk" when you press the ignition button.
*what could be the reason for the starter making a healthy ch-chunk noise when I hit the starter button. Is it the starter solenoid? Oh yea, I replaced the starter button with new one 200 miles ago.
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Post by florida on Jan 24, 2016 19:09:23 GMT -5
Yet another chronicle about desecrating an excellent Znen 139QMB into a pile of excrement!
For others considering purchasing their first scooter . . instead of "gaming the system", if 30-35 mph is not suitable for your performance expectations, save yourself a lot of expense and aggravation by initially selecting at least a 125cc. You know what road rage is right? Heres a link: tortoise, you should watch the video because what happens to the rager is hilarious. Zhen 50cc stock does 39mph tops, which for some is very good. I have been confronted a few times by very angry motorists for holding them up with my lack of torque and low top speed. After seeing your sym125 rig and homeade trailer im pretty curious. Whats your deal, post a link about your scooter.
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Post by tvnacman on Jan 24, 2016 20:37:40 GMT -5
I would recheck the valves. Since you have a meter. Let's have a look at the stator plug. Set your meter to ac volts crank the engine and read the voltage on the black/red wire coming from the stator to ground. Then do the same to the blue/white wire come back with the readings.
John
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