How many RPMs should there be when a 91 rx-7 is idling? And how can I change the timing?

thank you for any help

 

750, and why do you think you need to change the timing? Is it daylight savings already?

PEACE THE DOG

 

Is your motive for changing the timing because you think it's off and want to set it? Or because you want to change performance by advancing or retarding...?

Search for 'timing' and you'll have all the info you could possibly need.