* Chevron warning fuels broader earnings, economic jitters

* Consumer sentiment data on tap

* Futures off: S&P 7.50 pts, Dow 62 pts, Nasdaq 7.25 pts

* For up-to-the-minute market news click [STXNEWS/US] (Writes through, adds details, quote, byline)

By Leah Schnurr

NEW YORK, July 10 (Reuters) - U.S. stock index futures pointed to a lower open on Friday after Chevron warned about second-quarter earnings, raising the specter of a weaker-than-expected second-half economic recovery and anemic corporate profits.

After the bell Thursday, Chevron Corp (CVX.N: Quote, Profile, Research) said second-quarter earnings would be hit by a sharp decline in U.S. refining margins and that any benefits from higher oil prices would be largely offset by a weaker dollar. (For details, see [ID:nN09478562])

Stocks are likely to be pushed and pulled as major companies release financial scorecards and investors focus on the corporate outlook for the rest of the year. Earlier in the week, Alcoa Inc (AA.N: Quote, Profile, Research) posted a better-than-expected loss Wednesday, providing short-term relief.

Optimism about a burgeoning economic recovery has propelled the broad S&P 500 up by as much as 40 percent from March's 12-year lows, but investors are reassessing how strong a recovery might be after the worst financial crisis since the Great Depression.