The bike is made in Czechoslovakia. There is a 2010 Yuki Darker model. It is a V twin OHC four stroke with carbs, disk brake on front, drum brake on rear, ( kind of backwards thinking ), CDI ignition, air cooled. Good or bad bike is irrelevant. Even if it is a good bike, where is your nearest service center? Do they have parts on hand or have to order from the factory every time? What is the warranty? When you sell the bike, will the new owner be close to the dealer? My personal opinion is that any motorcycle that doesn't have at least five dealers within 50 miles of where I live can be classified as a YUCCKY motorcycle. Best to go with a brand name; Honda, Yamaha, Kawasaki or Suzuki.
Hi, Emma-Kate before testing any electrical component in the Starting Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead-acid batteries.
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Engine Run Switch is "FAULTY" or corroded.
4. Check the battery terminals for damage or corrosion check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter.
5. Bank angle sensor needs a reset or is faulty.
6. FOB battery low or dead.
7. Faulty ignition switch.
8. Faulty starter button.
9. Faulty kickstand, clutch, neutral safety switch.
10. Security alarm needs a reset.
11. Starter relay, solenoid, starter motor or circuit wiring faulty.
12. Starter armature or field coils have failed.
13. Main fuse or circuit breaker may be blown or faulty.
14. Faulty ignition relay.
15. The electric starter is working but starter clutch has failed.
16. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day. What To Do If Your Motorcycle Doesn Start 3 Things to Look for When Your Motorcycle Won Start The Allstate Blog Scooter Service And Repair Manuals https://www.scooterdynasty.com/stockoempartsforscooters-32.aspx http://mail.tsimn.com/moto_q9h_user_manual.pdf
If you know it's the side stand switch, most switches are in and Open or Closed state. When the stand is down, I'm going to guess the circuit is open, and when you put the stand up the circuit is closed. It's one or the other right?
So if you're stuck, I'd first try disconnecting the switch and see if the bike starts then. If that doesn't work then you can try shorting out the switch so it closes the circuit and you can start the bike. I'm not familiar with the actual electrical socket on your bike but see if putting some aluminum foil across the prongs will close the circuit for you and you can start the bike? If that works, get a new switch. Good Luck.