For the last three days my 325 mag has been stalling after aproximately 30 to 40 min. of riding. I can restart once it cools. Changed fuel filter and checked the fuel vent line. any ideas?????

 

If it is liquid cooled I would think it is getting hot, maybe the fan or water pump? I dont really know thats just where I would start.

 

This may be one of the rare times that an ignition coil is actually going bad - next time this happens, immediately pull your spark plug and check for spark.

If you have a multimeter handy when this happens, you can Ohm the plug wire (unscrew the plug cap from the wire) to frame ground and should read around 6K Ohms - if it reads open (infinity), your ignition coil probably has a broken wire that separates as the heat in the copper wire windings expands the copper and "pulls" the broken ends apart - by "cooling down", the wires "shrink" and begin to touch again.

This lack of spark could also be caused by your Pickup Coil (Pulse/Trigger coil) or by the Stator Exciter coils, or the CDI box doing the same thing, but usually when they go bad, they just flat quit working.

 

thanks, I give it a try!