moen kitchen faucet diverter valve repair

I have the Moen Chateau kitchen faucet pictured below and am having the following issues: the button on the sprayer hose is sticking, it will not release easily After doing to some research I think I need to clean out the diverter on it, but I don't know how to get to it. I tried looking online, but I have not found... HomeAdvisor's Shower Faucet and Valve Repair & Replace Guide instructs users on how to repair leaky single, double or triple handle faucets, how to replace diverter valve The majority of problems stem from a faulty valve or component.