Replacing Spark plugs

[watson]

I own a 2008 Bullet 350cc that has clocked 3500km. So far I have replaced as many as five spark plugs! The problem continued even after consultation with the Enfield service advisor. Every spark plug deteriorates and the bike stalls while riding. What could be the reason?

[dilhara]

This happens normally because of heavy deposit of carbon in the plug. May be the carburetor is running too rich or oil is being burnt along with the fuel. Check that this is not the case before proceeding.