YTM 175 wont start, no spark HELP!!

[trikes4life]

I ahve a yamaha tri-moto 175 that has no spark and i dont no why it doesn't. I thought it was the cdi but i put one that i bought on there and there still is no spark. Anyone know what i can check, i ckeck my wires as best as i can, any info will will help.

[chris200x]

Not to sure about the yamaha's but on most of the honda's I see with no spark it's the stator. the one coil in there goes bad. Don't know if that helped any...

[trikes4life]

Is there a way to check my coil..

[trikes4life]

I dont think it is the coil but now i need a new one. The wire running from the coil to the sparkplug boot was broken so i cut it down and and put the wire in the coil. Still no spark. i think the problem is the starter. IS the a way to get the rotor off, with out a tool.

[rustbucket]

Are you sure the switch on the handle bar isn't bad? unplug it. then look at where the wires go into the engine some times they rub on the flywheel and get cut.

[TeamGeek6]

All you can do is check the continuity of the stator and ignition coil, a regular ohmmeter will not tell you anything useful about the stator except if its completely open. Take all the plugs apart ( in the wiring harness) and look at them closely, thats the first thing to suspect.

Get a wiring diagram and check continuity of all the circuits, but realize that doesnt mean much because it wont show a loose connection or corrosion that can short out under high voltages.

Beyond that (or just throwing parts at it $$$$) it takes an oscilloscope to troubleshoot it.

Try a motorcycle parts house for a rotor puller, thats usually a must.

If you cant get anywhere with it, I can put it on my test stand and troubleshoot it.