Its a 1973 yamaha CT1 175 There is no list for it

There are several possible causes for your bike stuttering and then dying while riding, despite having replaced the spark plugs, coil, and wires. It's worth doing further diagnosis to identify the root cause. Here are some possible reasons why your bike won't start:

1. Fuel delivery: Check to see if your fuel pump is working properly and ensure that your fuel lines and tank are clean and free of debris. If your bike has a carburetor, check to make sure that it's functioning correctly.
2. Electrical system: Check that your battery is charged and in good condition. Also, ensure that the electrical connections are clean and tight. Make sure that the charging system is working correctly, as a bad stator or rectifier can cause similar symptoms.
3. Ignition system: Make sure that the ignition system is working properly. Check the timing and make sure that the ignition switch, kill switch, and key switch are all functioning correctly.
4. Compression: Make sure that your engine has good compression. A compression test can help identify if this is the issue.
5. Other components: Other components, such as the cap and rotor, valve timing, fuel injectors, and camshaft position sensor, may also cause these symptoms.

It may be helpful to consult a mechanic or dealership if you are unable to diagnose the issue. They may be able to provide you with more specific guidance on how to fix the problem.

Hi Barry:
Sounds like there is a dead short happening in the # 2 position. Trace the wire to determine what is supposed to be happening at #2..... There will probably be a grounded connector. Gotta love those old bikes.

Get great insurance, then have someone ste^! it and tuch it

it sounds as though you have a loose wire, start the bike as normal but as you do gently wiggle the wires near the kill switch and ignition ,if the bike starts and stops you know you are close to the problem also check the earth contacts on the coil to frame are good and replace the plug as this is cheap and not so uncommon.

yep but it could be a whole lot of other things too follow the kill / stop switch wires and unhook them first

Check the battery should be 12V or more , Then check the coils the connections are under the gas tank make sure they are securely connected.
What kind of fuse box do you have? The glass fuses? Or did you replace the fuse box. If it is the glass fuses you need to replace with a new fuse box.
Check the kill switch and the side stand switch.
Check the coils too..

Even though I am unfamiliar with your bike I will give this a try on the condition that You give me a "Helpful" rating or better. Like you, I am unable to comprehend pigeon English.

A spark plug can go bad at any time. Get a new plug. Put the wire on the plug then ground the metal side of the plug against the cylinder head as you press the starter button. Look for the spark. If no spark, check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it. Check the fuses. How good is the battery? Is the handlebar kill switch on? Check the operation of the ignition switch and all kill switches with a volt ohmmeter.