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My 125cc Chinese scooter doesn't start with the electric start button. However, when I short the two starter solenoid poles together, the scooter starts fine. I replaced the solenoid itself, but the problem persists. So I assume there is something wrong with either the electric start switch or brake sensors.

I do not have the time to diagnose and work on it at the moment. So I plan to connect a simple button to the solenoid, which will short the two poles when pressed. Is this safe? I will probably use the solenoid bypass button to start the bike for at least 6 months. Will doing this frequently damage anything in the scooter?

Secondly, I would appreciate if someone could give me ideas on how I could connect the button efficiently, and also the type of button to be used.

Any advice would be highly appreciate.

Thanks a bunch

Pᴀᴜʟsᴛᴇʀ2
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Jspake
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3 Answers3

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Your best bet is to get a simple automotive relay and attach it to the scooter, with the relay providing the power to the solenoid and a momentary switch (what you called a "button" switch) to energize the solenoid. The momentary switch won't have the ability over time to support supplying electricity to the solenoid to energize it, so you'd end up having to replace it at some point (maybe even more than once) during the six month period.

As for whether this will hurt the scooter, I would doubt it. You are only replacing what the factory is doing.

My only thought is, if you are going to take the time to put something like this on, why not just fix the scooter in the first place. It probably wouldn't take any more time than what it will take to affix the relay and momentary switch.

Pᴀᴜʟsᴛᴇʀ2
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If your solenoid has more than 3 wires (batt, starter, key), then when the solenoid is energised it could / should also provide a feed to the coil (probably) and if this is not working the that may be why you have difficulty starting.

Solar Mike
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I sure hope you've got this worked out by now, for those coming here in search of answers #1 make CERTAIN YOU HAVE A FULL BATTERY AND ALL OF YOUR CONNECTIONS ARE CLEAN AND TIGHT! Ok, sorry about yelling..... If the scooter makes an awful nails on the chalkboard sound along with the obligatory clicking and whirring sound, it is your starter clutch ( behind the flywheel and stator, inside the crankcase.) If if doea absolutley nothing it is either your safety switch on the brakes, the ignition switch, or the start switxh itself. Use a meter to test for conductivity through the switches in startup cindition. You can also snip the black and gray wire coming out of the CDI in wire #6 location. Doing this will bypass the kill switch

Jeffery Young
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