Yamaha Motorcycles - Popular Questions, Answers, Tips & Manuals


Hi, Aron before testing any electrical component in the Turn Signal Light 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 because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, "AGM" batteries fall into this category more so than lead-acid types, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals are working the cause could be a faulty turn signal module/flasher or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If your turn signal comes on but takes several seconds before it starts flashing you may have dirty contacts in the turn signal switch/button, the switch needs to be opened up and cleaned also the flasher may be starting to fail. It should be noted that cold weather will only exacerbate the situation especially when temperatures drop down below freezing and the location of the component, turn signal switches on the handlebar are at the mercy of the oncoming freezing 70 mph wind and makes it hard for the contacts to do their job covered in frozen grease/grime
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first, look for, corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
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.motorcyclecruiser.com/basic-electronic-troubleshooting/
https://www.motorcyclenews.com/new-rider/choosing-kit/2011/august/aug3011-why-do-bulbs-keep-blowing-/
http://www.family-motorsports.net/GY6-50cc-150cc.pdf
https://www.partsfish.com/page/oem-parts-for-yamaha
http://www.yamaha-motor.com.my/wp-content/uploads/2019/01/BC1-Nmax-EN.pdf

Yamaha... | 241 views | 1 helpful votes


Hi, Dave you need to repost your question under the Snowmobile category, not Motorcycles. Thanks, Gregg

Yamaha... | 26 views | 0 helpful votes


Hi, Fredpitzman you need to repost your question under the Generator category, not Motorcycles. Thanks, Gregg

Yamaha... | 27 views | 0 helpful votes


Maybe..chec utube or buya clymer manual. There are cycle salvageyards online. Seek an oldsch bikeshop intown..they know rite off from xperience

Yamaha... | 24 views | 0 helpful votes


I always add about 10% oil to my small engines to help protect them from friction. If it starts ok with that much oil, it might smoke a bit and cause a little carbon build up on the plugs or valves, but most engines after 1980 are high enough heat and compression ratio to clean themselves up.
Sometimes the oil doesn't blend in all the way without some sloshing around.

Yamaha... | 63 views | 0 helpful votes


Try wemoto.com or rexs-speedshop.com

Yamaha... | 25 views | 0 helpful votes


Looks like your only solution is a new speed sensor, unless you have damaged the connecting wire.

Yamaha... | 27 views | 0 helpful votes


Hi, Michael 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 not find the 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.manualslib.com/manual/660144/Yamaha-Royal-Star-Xvz13ctv.html?page=64
https://www.youtube.com/watch?v=cZpURVnpE5o
http://www.werder.ee/Manual/XVZ1300.pdf
https://www.partsfish.com/page/oem-parts-for-yamaha
https://www.manualslib.com/manual/612302/Yamaha-Royal-Star-Xvz1300a.html

Yamaha... | 24 views | 0 helpful votes


Hi, Yusuf and the usual suspects are:
1. Condensation builds up from parking a hot bike in a cold place.
2. Blown head gasket on liquid cooled engines.
3. Faulty water pump.
4. Blown base gasket.
5. Cracked cylinder or head.
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.quora.com/Milky-oil-in-my-scooter-125cc-can-someone-find-the-problem
https://www.elf.com/en/lubricants-faq/about-lubricants/why-there-water-engine-oil
https://www.manualslib.com/manual/917772/Yamaha-Xc50v.html#product-VINO%20XC50V
https://www.partsfish.com/page/oem-parts-for-yamaha
https://www.manualslib.com/manual/558548/Yamaha-Vino-Xc50w.html#product-VINO%20XC50V

Yamaha... | 72 views | 1 helpful votes


Hi, Robert for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.google.com/search?q=Voltage+regulator+location+2009+Yamaha+Majesty+250&tbm=isch&source=univ&sa=X&ved=2ahUKEwjc6KOux4jlAhXqzVkKHfPgDQUQsAR6BAgGEAE&biw=1440&bih=757
https://www.youtube.com/watch?v=EL88DkoamYk
https://www.manualslib.com/manual/656596/Yamaha-Yp250.html
https://www.partsfish.com/page/oem-parts-for-yamaha
https://www.manualslib.com/manual/597161/Yamaha-Majesty-Yp250a.html

2009 Yamaha... | 349 views | 1 helpful votes


Hi, Edward 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 not find the 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://yamahaclub.com/forums/topic/29235-sr125-wont-start-just-clicks/
https://www.youtube.com/watch?v=rG0ZuLCqtAg
https://www.manualslib.com/manual/882832/Yamaha-Sr125-1997.html
https://www.partsfish.com/page/oem-parts-for-yamaha
https://www.manualslib.com/manual/611279/Yamaha-Sr125.html

Yamaha... | 27 views | 0 helpful votes


Remove the engine cover, find the carburetor, move the choke lever, see if something moves on the carb. Generally, broken choke cables are very noticeable because they are loose.

I presume this is the first time you have used your snowmobile this year? That means you have stale fuel in it, probably condensation water unless you stabilised the fuel at the end of last season. Your main problem though is that the carburetor needs cleaning.

https://www.google.com/search?safe=off&rlz=1C1QJDB_enCA643CA644&sxsrf=ACYBGNSDJQFxHnV3zq2k9VLu0zeOpEEllw%3A1575911358684&ei=vn_uXfSsKa3r_QbP9ZfwCA&q=91+yamaha+phazer+cleaning+carb

Yamaha... | 39 views | 0 helpful votes


Hi, Austin 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. The following is a list of usual suspects that will cause your bike not to turn over.
1. Ignition Switch is in the "OFF" position.
2. Ignition Switch is faulty.
3. Engine Run Switch in the "OFF" position.
4. Engine Run Switch is "FAULTY" or corroded.
5. 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.
6. Bank angle sensor needs a reset or is faulty.
7. FOB battery low or dead.
8. Faulty ignition switch.
9. Faulty starter button.
10. Faulty kickstand, clutch, neutral safety switch.
11. Security alarm needs a reset.
12. Starter relay, solenoid, starter motor or circuit wiring faulty.
13. Starter armature or field coils have failed.
14. Main fuse or circuit breaker may be blown or faulty.
15. Faulty ignition relay.
16. The electric starter is working but starter clutch has failed.
17. 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.
https://www.roadstarclinic.com/forum/technical-forum/electrical-electronics/4240-electrical-problems-bike-won%E2%80%99t-start
https://www.youtube.com/watch?v=FIKyM2PAwSw
http://www.werder.ee/Manual/XV1600.pdf
https://www.partsfish.com/page/oem-parts-for-yamaha
https://www.manualslib.com/manual/660125/Yamaha-Road-Star-Xv16a.html

Yamaha... | 19 views | 0 helpful votes


Is ur batt reading at 12.6v..it must. Or u hava bad sensor etc in the harness..maybe a bad ground or loose battery connects. Buy a clymer manual or git bike scand w a factorytool to read values showing whats happend in the circuit

Yamaha... | 35 views | 0 helpful votes


Hi, Rob and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the choke.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Quick disconnect check ball stuck.
14. Compression below 75 PSI.
15. A stuck-bent-burnt valve.
16. Improper valve clearance (too tight)
17. 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 cursory 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.
18. 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.
19. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
20. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections are loose or connected to the wrong cylinders.
21. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
22. Faulty neutral, clutch, kickstand safety switch.
23. Faulty fuel pump or fuse or relay.
24. Faulty or corroded run/stop switch.
25. Tilt sensor needs a reset.
26. Security system not disarming alarm needs a reset.
27. 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.
https://www.motorcycleforums.net/threads/vstar-650-wont-start.48061/
https://www.starbikeforums.com/threads/vstar-650-starting-problem.110090/
https://www.motorcyclecruiser.com/what-to-do-if-your-motorcycle-doesnt-start/
https://www.manualslib.com/manual/833178/Yamaha-Xvs650.html
https://www.partsfish.com/page/oem-parts-for-yamaha
https://www.manualslib.com/manual/659403/Yamaha-V-Star-Xvs650p.html

Yamaha... | 24 views | 0 helpful votes


Hi, Malcolm you need to repost your question under the Guitar category, not Motorcycles. Thanks, Gregg

Yamaha... | 19 views | 0 helpful votes


Hi, Raymond you need to repost your question under the Snowmobile category, not Motorcycles. Thanks, Gregg

Yamaha... | 19 views | 0 helpful votes

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