[SpudRider]

Even though I had just adjusted the valve lash, my RX3 started to stall while coasting to a stop. Then I realized I had ridden almost 14,000 miles on the original spark plug.

I installed an NGK CR7E spark plug to replace the Denso spark plug. The gap of the NGK CR7E spark plug is .031 inches.

http://www.ngk.com/product.aspx?zpid=9660

In order to replace the spark plug, I performed the following steps.

Remove both saddles
Remove right (black) plastic cover which flows into the fuel tank shroud
Remove the bolt holding the ignition coil, and move the ignition coil out of the way
Blow out spark plug hole with compressed air
Remove original Denso spark plug
Install NGK CR7E spark plug
Replace the ignition coil in its original location
Replace right (black) plastic cover which flows into the fuel tank shroud
Install both saddles

My RX3 runs great with the NGK CR7E spark plug, and it no longer stalls while coasting to a stop.