We have a 99 yamaha 350 big bear 4x4, it had a carb fire and we had to replace the wiring harness and carb. We also changed the battery. It had sat outside for 4 or 5 years before we got it. I ran the test on the pick up coil because we had NO spark, it failed. Tonight I changed the stator . I have a faint blue spark from time to time. I have 9 to 12 volts coming to the sparkplug coil. I have a new NGK plug in it also. We have been working off and on this a year and my 13 year old is lost his faith that it will ever run and I am close. Any help would be GREAT! !! THANKS, Craig

 

If you don't have a service manual here's one that may be able to help you further.Believe you have to register to get it.Yamaha Big Bear 350 service manual repair .pdf download - 2shared

 

Thank You!

 

I can only get .4 to .9 volts to the spark plug coil. A match is getting close , more help please.