20 Most Recent 2007 Yamaha XT 125 X Questions & Answers


Hi, Danny I would consider taking it to Yamaha motorcycle Dealership otherwise the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery should have 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 batteries fail in this scenario more so than lead-acid batteries.
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. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting/leaking, spark plug cable connections loose check for spark leakage in the dark.
6. Faulty ignition coil or electronic control module.
7. Faulty pulse coil.
8. Faulty CKP, CMP, or BAS sensor.
9. Faulty ignition switch.
10. Faulty run/off switch
11. Tilt sensor needs a reset.
12. Security alarm failing to disarm needs reset
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2007 Yamaha XT... | Answered on Feb 25, 2019


Could be almost anything from overheating causing the rings to stick to main bearings seized due to lack of lubrication.

2007 Yamaha XT... | Answered on Aug 25, 2017


Hi, Scott it should be noted that the reasons your EFI light stays on constantly or flashes and your bike will or will not start and may turn over or not, these conditions will vary from bike to bike depending on the year, make, and model and you should always refer to your owners/service manual for proper diagnostic procedures. It should also be noted that any type of prior work done to the bike or an abnormal event occurrence IE: adding accessories, electrical curiosity/adventures, laying bike down/crashes, rainstorms/bike washings just before EFI light issues started can be significant hints/aids into tracking down the gremlin, also carry the appropriate jumper wire to access fault codes to reduce the risk of being stranded or towed, that being said the usual suspects are:
1. Faulty Fuel Pump, fuse or system relay switch.
2. Battery starting to fail due to old age/damage, perform a load test.
3. Discharged battery, 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. Faulty switches/sensors: run/off, ignition, clutch lever, neutral, side stand, tip over, fuel, and or their connections.
5. Broken wire or worn insulation exposing wire to a ground situation especially inside wire harness at tight bends around fairing brackets, under dash panels, under fuel tanks over cylinder heads etc. Many harnesses are open on the ends that will allow water to enter and accumulate at v-bends.
Dielectric grease and contact cleaner are your best friends for wire/cable/harness connectors, look for corroded, broken, or loose pins/sockets.
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2007 Yamaha XT... | Answered on Jun 04, 2017


Hi, Limax3709 for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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2007 Yamaha XT... | Answered on May 23, 2017


Hi, Dilys for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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2007 Yamaha XT... | Answered on Apr 03, 2017


Hi, Anonymous for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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2007 Yamaha XT... | Answered on Jan 09, 2017


Hi, Anonymous for this scenario you will need your service/owners/ manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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2007 Yamaha XT... | Answered on Dec 18, 2016


Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
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. Loose connection at ignition coil or plug between ignition sensor and CDI box.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose, check for spark leakage in the dark.
6. Faulty ignition coil, pick up coil, trigger coil or CDI box testing needs to be checked with an ohmmeter at 70 degrees Fahrenheit
7. Faulty safety switches clutch, kickstand, neutral, off/on etc.
8. Faulty ignition switch.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Guys need help Electrical problem Vintage
How to fix No Spark Problem on Motorcycles and Dirt Bikes
Yamaha xt 125 service manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xt-owners-manuals
Yamaha Owner Manuals

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2007 Yamaha XT... | Answered on Nov 17, 2016


there are 2 allen head cap screws at the fromt of the seat underneath the side covers that hold it in place

2007 Yamaha XT... | Answered on Feb 09, 2014


when you replaced clutch plates did it compress up when you fitted the end plate with springs , also did you soak the fiber plates for a couple of hrs before fitting ! on the end clutch plate is there a centre nut and screw that you can adjust the free play and did you reset this ?

2007 Yamaha XT... | Answered on Jan 14, 2014


Your clutch has worn out or exceeded the useful life and will need to be replaced, this isn't a hard repair if you have basic skills and tools. The repair should begin with Yamaha repair manual then read the section for clutch and you can judge for yourself if you can do it, if you do take lots of pix of everything you touch or remove as this will be of great value upon reassembly. If this is your first time repairing your scoot it will make you proud you did it yourself. Good Luck

2007 Yamaha XT... | Answered on Jan 01, 2014


Adding too much oil to any engine can cause leakage and potentially damage.

2007 Yamaha XT... | Answered on Nov 25, 2013


Two allen bolts under the seat - towards the back of it, one either side, then simply lift off. Don't lose the little washers.

2007 Yamaha XT... | Answered on Nov 25, 2013


I may need a bit more clarification, but I am assuming the lever is 'spongy'?
The simplist thing to do first is to tie the front brake lever back (ie make it stay on) using a zip tie. Leave this overnight/24 hours and it will allow the trapped air to rise.
Failing this, you can bleed the brake in reverse. Get a large syringe (ebay/chemist) and some pipe that fits over the bleed nipple and the syringe. Remove the master cylinder cover and **** out (use the syringe) the brake fluid. Now fill the syringe with fresh brake fluid and connect to the bleed nipple on the caliper. Open the bleed nipple and slowly push the syringe in, to force the fluid up to the reservoir. Be careful that the fluid doesent come out of the reservoir and splash on your paint work. Lock the bleed nipple up whilst still slowly forcing the fluid in. This normally works.

2007 Yamaha XT... | Answered on Nov 25, 2013


Okay....I think your bike may have a vacuum operated fuel petcock.....which is the fuel valve on the bottom of the tank. It shuts the fuel off automatically when the engine stops and the hose from the intake to the side of the petcock loses vacuum.
So when you restart the bike the petcock is closed till the engine starts...which is okay because there is a small amount of fuel in the carb.........until you run out of gas....then the engine quits and the carb is empty.
To handle this situation, typically there is a prime position on the petcock that allows flow without vacuum to "prime" the empty carb......usually marked as PRI on the petcock,
So rotate the lever on the petcocck to prime....wait a couple minutes....get the bike started and set the petcock back to the normal setting....don't leave it on PRIME as fuel may flow overflowing the carb.

2007 Yamaha XT... | Answered on Apr 04, 2011


Your bike should have a cable driven speedometer. Look at the left side of front wheel...wheel axle is, you will see the speedometer cable attached. make sure that end is securely tightened, if it has come off, the internal cable may have slipped out. If its okay....now go under the speedometer housing and check the nut on the cable at that end...make sure its secure. Chances are it loosened off so cable was no longer engages into speedometer.
Other possibility...cable inside the outer sheath broke. A new cable is around $20 Cdn.

2007 Yamaha XT... | Answered on Mar 06, 2011


If you want to but why would you want to?

2007 Yamaha XT... | Answered on Jan 13, 2011


you will need to remove ur seat in order to get to the bolt or clip down that holds the rear of the petrol tank to frame.make sure the fuel tap is off & remove the fuel line going from tank to carburator then remove tank & empty the old gas out.there should also be a drain bung/bolt on bottom of ur carburator bowl,undo this let all gas empty out,then re-tighten & then reverse steps to put tank back on.Fill with fresh gas try start,check for any leaks & should be good to go!

2007 Yamaha XT... | Answered on Jan 04, 2011


Not much info to go on but could be a dud / flat battery. Once engine is running will run all accessories.

2007 Yamaha XT... | Answered on Nov 02, 2010

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