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1978 yamaha dt125 headlight blowning - Motorcycles

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1978 yamaha dt250

MAKE SURE THE BATTERY IS IN A GOOD STATE OF CHARGE, ON THE OLDER BIKES WITH AC LIGHTING THE BATTERY ACTS AS A RESISTOR, HENCE IF THE BATTERY ISOLD AND NO LONGER WORKING, WHEN YOU RUN THE MACHINE ALL THE BULBS WILL BLOW, STARTING WITH THE NEUTRAL LIGHT, AND SO ON, AS THE BRAKE LIGHT , HORN , AND INDICATORS ALL WORK ON THE DC ELECTRIC SIDE IT WOULD PROBABLY BE A GOOD IDEA TO CHECK YOU ARE GETTING 6VOLTS FROM THE BATTERY TO THE IGNITION SWITCH, YOU COULD LOOK FOR BROKEN WIRES AROUND THE HEADSSTOCK AREA, OR CORRODED BLOCK, AND OR BULLET CONECTORS ALSO IN THE COMPLETE HARNES.

Posted on Oct 10, 2010

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sisadsl
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SOURCE: what oil in crankcase of 1978 yamaha dt125

20w40 motorcycle engine oil, do not use car oils or the clutch may slip

Posted on Oct 27, 2011

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1 Answer

Yamaha dt125 ! Is it possible replace bevel gear by removing the side cover or do I have to split the engine?


Hi, Sally you have to split the cases to get to the transmission, sorry 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.
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
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What is the correct resistance for a stator on a 1977 yamaha dt 125


Hi, Glenn sorry 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 visit the websites below. Good luck and have a nice day.
https://yamahaclub.com/forums/topic/36289-1978-dt-125-did-the-factory-wire-it-this-way
How To Test Stator coil
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
OEM parts for Yamaha
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf

Apr 21, 2013 | 2000 Yamaha DT 125 R

1 Answer

1980 Yamaha xs1000 Midnight Special headlight not working


Hi, Gpracing if your headlight is not working, only one beam works, keeps burning out, blinking, or is dim the first thing you need to check is the headlight bulb for damaged filaments then check your light circuit fuse, then check your head light bulb socket ground wire for a clean tight connection, that being said the usual suspects are:
1. Faulty ground or power supply wire to headlight bulb socket.
2. Worn down solder contacts or loose fit of the bulb base in the socket due to vibration.
3. Worn, chaffed, or broken wires in the light circuit.
4. Corroded, broken, or loose pins/sockets in wire connectors.
5. Faulty hi/lo beam switch.
6. Faulty ignition switch.
7. Fuse is good but no continuity on both sides.
8. Faulty wiring between battery positive and headlight bulb socket.
9. Weak charging alternator/generator.
10. Faulty voltage regulator/rectifier ground or overcharging.
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.
Headlight Question Page 2 XS11 com Forums
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1978 1981 Yamaha XS1000 Fours Motorcycle Workshop Repair Service Manual... $10
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xs-owners-manuals

Jan 13, 2012 | Yamaha Motorcycles

1 Answer

Yamaha DT 125 2003 Main beam headlight low voltage


Hi, Anonymous if your headlight is not working, keeps burning out or is dim the first thing you need to check is the headlight bulb for damaged filaments then check your light circuit fuse, that being said the usual suspects are:
1. Faulty ground or power supply wire to headlight bulb socket.
2. Worn, chaffed, or broken wires in the light circuit.
3. Corroded, broken, or loose pins/sockets in wire connectors.
4. Faulty hi/lo beam switch.
5. Faulty ignition switch.
6. Fuse is good but no continuity on both sides.
7. Faulty wiring between battery positive and headlight bulb socket.
8. Weak charging alternator/generator.
9. Faulty voltage regulator/rectifier, overcharging.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have nice a day.
https://yamahaclub.com/forums/topic/25945-dt-175-mx-12volt-conversion
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
OEM parts for Yamaha
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf
Yamaha DT 125 2000

Jan 07, 2012 | 2003 Yamaha DT 125 R

1 Answer

What oil in crankcase of 1978 yamaha dt125


20w40 motorcycle engine oil, do not use car oils or the clutch may slip

Oct 26, 2011 | 1974 Yamaha DT 360

1 Answer

My dt125r headlamp low beam is very dim can you tell me why ?


Hi, Madmurph_567 if your headlight is not working, keeps burning out or is dim the first thing you need to check is the headlight bulb for damaged filaments then check your light circuit fuse, that being said the usual suspects are:
1. Faulty ground or power supply wire to headlight bulb socket.
2. Worn, chaffed, or broken wires in the light circuit.
3. Corroded, broken, or loose pins/sockets in wire connectors.
4. Faulty hi/lo beam switch.
5. Faulty ignition switch.
6. Fuse is good but no continuity on both sides.
7. Faulty wiring between battery positive and headlight bulb socket.
8. Weak charging alternator/generator.
9. Faulty voltage regulator/rectifier, overcharging.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have nice a day.
Headlights dim when signals flash The FZR Forum
relay switch on dt125 head light
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
Yamaha Motorcycle Parts Spares From Europes Number 1 MSP
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf

Jun 25, 2011 | 2003 Yamaha DT 125 R

1 Answer

My dt125 01 plate has blown a ring on 2 pistons in the same place, the remains of the ring goes out the exhaust but it hit the power valve on the way out scoring the piston, the crank area is now making a...


Hi, Weedman01604 motorcycle engine repair isn't rocket science or nuclear physics find a shop that knows what they are doing and has an excellent reputation for more information about your question and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
Yamaha Motorcycle Parts Spares From Europes Number 1 MSP
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf
Yamaha DT 125 2000
http://www.dirtntrial.com/tuning.htm

Apr 16, 2011 | 2001 Yamaha DT 125 R

1 Answer

How can i fix my oil pump for my bike yamaha DT125 1981


Hi, Adelalmansoo sorry 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 visit the websites below. Good luck and have a nice day.
TWO STROKE AUTOLUBE OIL PUMPS
https://yamahaclub.com/forums/topic/23188-dt125r-dtr-dt125-oil-pump-problem
Yamaha DT 125 problem
Yamaha Motorcycle Manuals
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf

Sep 29, 2010 | 2000 Yamaha DT 125 R

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