I’m a novice but ready to learn.

Grizzly had been stalling when throttle was pushed.

Now starter goes – chi, chi, chi . . . chi . . . chi. And won’t start.

Put in a new spark plug, old one was black. Started once, idled about 3 minutes, stalled. Won’t start back up.

This is a barely used Grizzly, bought in March 2013, has about 20 hours on it.

Where do I start to work this out and fix?

Many thanks