I have 13hp briggsandstratton got too much compresion will not turn over more than once .has automatic lever that I would like to find can any one help

Check the clearance on you valves probably to to be set,if its your automatic compression relief your looking for that's on the camshaft.

This is a good video on how to adjust the valves:

YouTube - Lawn Mower Repair Valve Adjustment (http://www.youtube.com/watch?v=NjzX-PUjKmo)