Why is a 24hp briggs and stratton intek engine difficult to get the motor to turn over at times?

The rocker arm clearance tends to loosen in these engines.

This causes too much compression at the wrong time resulting in hard starting.

Most people think the battery is weak but a relatively simple adjustment of the

valve/rocker arm clearance should solve your problem.

Check your manual and YouTube for instructions or consult your local mower shop.