I have a similar problem to Your's.
I have what I think is a 1996 YFM 350 Big Bear/Moto4.
It is refusing to start, although there is a spark to the Spark Plug.
Subject: Yamaha Big Bear 350 Moto 4 Quad ?
I have a 350cc Quad ATV, It is not starting, I would very much Appreciate some Help to get it back up and Running.
It is urgently needed back in working order, to get firewood for My Mother's House, to keep Her warm this coming winter.
Yamaha Big Bear 350 Moto 4 Quad bike
1996 Yamaha Big Bear YFM 350 Moto 4 ?
Details from CDI Module Serial no.
Description to go with attached Photos:
7" Connector: 2 Wire : 1 Black : 1 Black/White Stripe.
7" Connector: 3 Wire : 1 Green/Yellow Stripe : 1 Yellow/Black Stripe : 1 White/Black Stripe.
14" Black Ground Wire with eye.
14" Connector : 4 Wire : 1 Green : 1 Red : 1 White : 1 Brown.
14" Single Orange Wire with Bullet connector.
Details from Engine:
bottom Nearside of Cylinder
Offside of Crankcase
Frame/Chassis number very indistinguishable, I think starts with 3HN-244, ends with 1996.
Would the description of what to do which You gave to Wildstang, do in My case?
Have uploaded 2 jpg's of Our CDI Unit.
ATVConnection.com ATV Enthusiast Community - Cunnoquhie_Ron_Hutchison's Album: Cunnoquhie_Ron_Hutchison_1996_Big_Bear_YFM350_Moto _4
Have e-mailed Carmo.nl, They say they can test/repair the CDI Unit.
Any Help would be very much Appreciated.