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Im looking for 1974 yamaha 80 enduro (2 stroke) wiring diagram. I couldnt find it in the product section so I tryd to find something close. I got this bike cheap for my nephew. His parents dont have any money and I dont have much so its a very low budget project. I need a wiring diagram cause all wires were cut and removed from the mag out. Its has the stator coil, the charging coil, points, and condensor but the wires conecting them all were cut close enuf that i cant tell were they went. Does this bike require a voltage regulator, cdi box, or ignition trigger. The coil that goes to spark plug is good it ohmed out at 6.5 kil ohms. Can anybody out there please help me? Thank you

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  • Yamaha Master
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Hi, Kyle for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
1974 yamaha 80 enduro wiring diagram Google Search
Yamaha Motorcycle Wiring Diagrams
YAMAHA DT80 DT100 GT80 FULL SERVICE REPAIR MANUAL 1977 1982 Download... $18
OEM parts for Yamaha
http://mybikemanuals.com/yamaha

Posted on Jun 02, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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dmsr63
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SOURCE: what is the oil to fuel mix ratio for a 1974

I seem to remember that they were oil injection, and had a tank seperate for oil, but...32:1 will work if it's pre-mix, just jet the carburator to match that and you will be fine.

Posted on Aug 18, 2009

  • 738 Answers

SOURCE: what is the float height

hi, looking in my manual for that year of bike, there is no mention of the float level, however normaly the float height of a constant depresion carburettor such as this is 27mm, this can be checked by holding the carburetor vertical with the air filter side facing up then slowly invert it until the float is just resting on the needle and not compressing,it.measure the distance between the gasket face of the carburettor and the bottom of the float. the fuel level can also be checked by using a lengthh of clear fuel pipe fitted to the drain at the bottom of the float chamber, undoing the drrain screw with the fuel pipe turned upwards toward the slide the fuel will climb up the pipe and show the present level,

Posted on Jan 19, 2011

redbeard00
  • 957 Answers

SOURCE: TTR 90 wont start. Not carb. Not CDI. Plug cap?

Every component plays a part in the ignition system. Check the wiring as you go. Start at one end and move forward. You have done a lot of work so far. so you should be close. If the igniter is fine and the other components too. Then it would narrow it down to an electrical problem or no signal/pulse to the coil. See if the coil is receiving that pulse. you can use a test light for this test. Pos. will be power and NEG. will be the pulse. With light on the NEG. crank the engine over and see if it flashes. Let me know how its going.

Posted on Jun 01, 2009

  • 13 Answers

SOURCE: the wires going to the voltage regulator keep burning up.

Common problem with poor quality parts, the regulator is the problem, the generator is working other wise you would not have fried the wiring, you answered your own question. someone telling porkies to get more money from unsuspecting client?
The regulator controls the voltage not the generator, the generator only supplys the voltage it cannot overcharge unless the regulator is not working properly, simple!

Posted on Jul 28, 2009

  • 221 Answers

SOURCE: wire connector between stator & voltage reg/rectifier burnt

your voltage/reg. can be tested in a couple different ways check ground res. check res. then revs. bias on diodes you have ac in dc out it sounds like you may have a diode gone bad allowing ac curent to flow causing the wires to get hot

Posted on Jul 31, 2009

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GDay mate

Took a bit of scrounging bout the net, but I eventually found it!!

You can look at the parts diagram/part numbers for the old girl here

A rating and feedback is a great way to reward me for my efforts to find this for you. Cheers mate!!

regards
robotoek

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Hope this helps

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