Top 20 2010 yuki 250 Darker Questions & Answers

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.

2010 yuki 250... | 299 views | 0 helpful votes

What you want in scooter.

Motorcycles | 144 views | 1 helpful votes

Plugs are under coils - remove each coil to access the plugs with plug wrench and 6" extension to ratchet.

Motorcycles | 234 views | 1 helpful votes

You should be able to adjust the clutch cable from the top by the clutch lever on the handlebars. There should be a thumb screw at the end of the lever.

Motorcycles | 466 views | 1 helpful votes

Hi, Sean, you need to perform the following tests:
1. Fill acid type batteries to proper levels.
2. Charge battery overnight at 1-2 amps you need 12.5 volts or better after charging and it must be able to pass a proper "LOAD" test you may have cursory readings of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries have this issue more so than lead-acid types.
3. Check 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 if necessary.
4. Hook up battery positive cable, then with your multimeter on the milliamp scale connect one lead to the negative battery post and the other lead to the ground cable. The meter should read 3 milliamps or less, 10 milliamps with a radio, 15 milliamps with radio and CB. If your multimeter reads higher you need to isolate the circuit by pulling fuses and circuit breakers one at a time and observe multimeter for a drop in amperage then get out your test light and track down the short in that circuit.
5. Hook up the multimeter to the battery set it to DC volts and start the engine if multimeter falls below 9.0 volts while cranking you need to perform a proper load test on the battery and replace if necessary.
6. With the engine running at 3600 RPM, the battery should read 14.3-14.7 volts if not continue tests.
7. Unplug the voltage regulator from the alternator at crankcase by the front of the primary cover.
8. To test the voltage regulator go to
9. With the multimeter set to the ohms scale, with one lead grounded, touch an alternator pin ohmmeter should read infinity, if not replace the stator.
10. With both leads touching alternator pins, multimeter should read 0.1 to 0.2 ohms on 1989 and later models. 0.2 to 0.4 ohms 1988 and earlier models, if not replace the stator.
11. With the multimeter set on AC volts scale, both leads touching alternator pins multimeter should read 16 to 20 volts AC for every 1000 RPM'S 1989 and later and 19 to 26 volts AC for every 1000 RPM. If not replace the rotor.
12. Check for excessive wattage load from the headlight
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.
How to do Parasitic Battery Drain Test
Testing Your Battery for Parasitic Load
How to Find Parasitic Battery Drain
How to diagnose fix parasitic draw on your motorcycle
The BEST Way TO Perform Parasitic Draw Test

Motorcycles | 169 views | 1 helpful votes


Motorcycles | 267 views | 2 helpful votes

Replace bulb, if a broken bulb is not correct check fix point's of the neutral wire to the frame, perhaps rusted

Motorcycles | 290 views | 1 helpful votes

First thing I would check is the air in all the tires is at the correct pressure.

Motorcycles | 33 views | 0 helpful votes


Reset Maintenance warning light on Lexmotto Michigan 125 efi

After nobody could help me reset the maintenance light on my lexmotto michigan 125 efi. Here is how I solved it.

remove the seat and underneath u will see the relay
Just unplug the relay and keep unplugged for a minute. Plug it back in put seat back and the light is gone. a minutes work and lexmotto would not tell me this.

on Mar 01, 2019 | Motorcycles

If it's a Harley-Davidson Sportster you're referring to. I'd suggest trying a Harley-Davidson Forum:

Or try YouTube:


Motorcycles | 58 views | 0 helpful votes

Hi Mike
If you reply to Gregg by clicking COMMENT under his post he will get a notification and come back to help you. Yes, Gregg is the best Harley dealer on the internet!

This was your previous post

Motorcycles | 31 views | 0 helpful votes

You don't need to know what the wires are used for. Just make sure to use the same gauge wire and to waterproof your connections.

Motorcycles | 43 views | 0 helpful votes


Motorcycles | 24 views | 0 helpful votes

Hi, Paul and the usual suspects are:
1. Throttle cables not properly adjusted.
2. Idle screw adjusted too low.
3. Air-fuel mixture screws not properly adjusted.
4. Pilot jet clogged.
5. Pilot jets too small.
6. Clogged air filter.
7. Faulty choke.
8. Multi carburetors not in sync.
9. Carburetor float needle valve stuck.
10. Fuel not getting to the carburetor.
11. Slide stuck in the carburetor.
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.
Scooter Troubleshooting Scooter won run All about Scooters
TaoTao 50cc Scooter Owners Manual

Motorcycles | 22 views | 0 helpful votes

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