20 Most Recent 2007 Yamaha yZ 125 Questions & Answers


Hi, Anonymous and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
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.
Dirt Rider Magazine
1999 yz250 not hitting power band
YAMAHA YZ125 Owner Service Manual
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2007 Yamaha yZ... | Answered on Jul 19, 2016


Hi, Andrew and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
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.
01 YZ 125 no power band please help Yamaha 2 Stroke
https://www.floridatrailriders.org/ftr_forums/showthread.php?t=1302
YAMAHA YZ125 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2007 Yamaha yZ... | Answered on Jul 18, 2016


Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. 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.
Yz125 No VIN number on frame HELP
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http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2007 Yamaha yZ... | Answered on Jul 14, 2016


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 $0 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 yZ... | Answered on Jul 12, 2016


The problem sounds like your idle jet is clogged. This sounds hard but its really quite easy if you have basic tools and talent.
You need to remove the carburetor, pull the bottom off and look for the very small jet that is up inside of the carburetor. Now you will see the big jet at the bottom and next to that you will see what looks like a tube up inside that tube is a small jet with a small screw driver you can remove this.
Now use some car cleaner and cover you eyes and spray untill you see the cleaner come out the other end. That is the quick fix if you want to get carried away just rebuild the whole carb the kit is very cheap. But to just get it going do the above its been done that way for years... Good Luck

2007 Yamaha yZ... | Answered on Nov 25, 2014


dont worry its a 20 amp (yellow fuse) in a box beside battery that has blown just change it for a new one. in the little box it should have some spear. dont worry happens often. well to me anyway lol

2007 Yamaha yZ... | Answered on Mar 06, 2013


Take off the clutch's pressure plate (number 8) and check the springs (number 9) behind the the bolts (number 10).Also slide out the pushing rod (number 22) and its ball (number 21)
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2007 Yamaha yZ... | Answered on Feb 11, 2012


Clutch cable or lifter broken

Ride Safe
Bike-Doc

2007 Yamaha yZ... | Answered on Feb 01, 2012


Hi, John for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Yamaha, despair not, for a mere $10 you can download another one.
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.
https://www.rockymountainatvmc.com/Parts-Finder/1834/1976-YAMAHA-YZ125
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1976 Yamaha YZ125X factory repair service shop manual on CD eBay $10
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Yamaha YZ 125... | Answered on Sep 02, 2018


I am not a expert so asker beware, but it might be that the clutch pads might be worn out or the pressure plate might be a little loose

Yamaha YZ 125... | Answered on Oct 27, 2017


Hi, Mark for this scenario you will need your service, parts fiche, and owners manual if you can't find the best tool you ever bought for your Yamaha, despair not, for a mere $37 you can download another one. 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.
YZ80 82 need some help
1982 Yamaha YZ 125 Restoration
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Oct 26, 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.
Broken kickstarter shaft help Yamaha 2 Stroke
Yamaha Yz125 broken kick starter
YAMAHA YZ125 T1 Owner Service Manual
OEM parts for Yamaha
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Yamaha YZ 125... | Answered on Apr 13, 2017


Hi, Chad and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on blue links below. Good luck and have a wonderful day.
Bike dies when you give it throttle
YZ125 starts then dies after day of running fine
Yamaha YZ125T1 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Feb 23, 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 $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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Yamaha YZ125T1 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Feb 19, 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 $0 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.
Torqe Specs for YZ125
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OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Feb 05, 2017


Hi, Michael 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.
ViragoTechForum com
http://www.thisoldtractor.com/mg_manuals/book_motorcycle_identification.pdf
Yamaha YZ125T1 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Feb 05, 2017


Hi, Jake 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.
Identify Your Yamaha Motorcycle Of 1970 1994
Yamaha Vintage Dirt Bike Guide Off Road com
Yamaha Motorcycle VIN Information
OEM parts for Yamaha
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Dec 26, 2016


Hi, Gmeckle and the usual suspects are:
1. Dirt or other foreign matter between float valve and its seat.
2. Float valve sticking.
3. Float valve and/or valve seat worn or damaged.
4. Float misadjusted.
5. Float cracked, leaky or damaged.
6. Excessive "PUMPING" of hand throttle grip.
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.
yz 125 problems HELP Yamaha 2 Stroke
Dirt Rider Magazine
YAMAHA YZ125 W1 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Aug 08, 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 module.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
6. Faulty ignition coil or electronic control module or CDI box.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
9. Tilt sensor needs a reset.
10. Security alarm failing to disarm needs reset
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.
YZ125 2003 2005 No Spark
How to fix No Spark Problem on Motorcycles and Dirt Bikes
YAMAHA YZ125 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Yamaha YZ 125... | Answered on Aug 01, 2016


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 $0 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.
2002 YZ125 suspension tuning HELP Yamaha 2 Stroke
http://motocrosshideout.com/2009/09/07/how-to-adjust-suspension-on-a-dirt-bike
Yamaha YZ125T1 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Yamaha YZ 125... | Answered on Jul 29, 2016

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