Jay Robinson of Los Angeles won six of his eight games in yesterday's second round of match play and surged to the lead of the $75,000 Fair Lanes Open bowling tournament at Springfield.

Robinson, who has won only two titles in six years on the Professional Bowl Association tour, was fourth before yesterday's round. With his six victories plus the 30 bonus pins for each win, the 5-feet-10, 170-pound Robinson finished with a total of 7,840 pins.

"I concentrated and I bowled well today," he said, anxious to start the final round of match play last night. "I'm trying not to look too far ahead.

I think I can make the final five if I just make good shots."

Ernie Schlegel of Yonkers, N.Y., dropped from his Thursday lead to second with 7,791 pins. Louie Moore of Columbus, Ohio, was third with 7,785, Roy Buckley of Columbus, was fourth with 7,710 and Tim Harahan of Capistrano Beach, Calif., was fifth at 7,696.

The third round will determine the top five who will advance to the nationally televised (WMAL-TV-7) final today at 3:30 p.m. First prize purse is $8,000.

Several of the final 24 bowlers, survivors of a four-day-long bowl-a-thon, turned in excellent second rounds to moved up in the rapidly changing standings.

The biggest jump was made by southpaw Dave Heller of St. Petersburg, Fla., who had the tourney's only 300 game Wednesday. He won seven of his eight one-on-one matches and vaulted from 22d to 13th. Heller had scores of 235, 225, 220, 179, 244, 233, 216 and 208 for 1,760 and a total pin fall of 7,529.

Mark Roth of Staten Island, N.Y. the pretourney favorite and leading money winner on the tour with $47,605, regrouped and moved from 18th to 12th.

"Everybody's doing well now," said Robinson, who has won $11,292 this season. "They're shooting telephone numbers out ther."

Robinson, rolling better as the torney progressed, recorded scores of 204, 227, 202, 215, 245, 258, 223 and 248. His only losses in the second round were to Roth and Schlegel. He also had the highest eight-game total of 1,822 pins.

Roth and area bowler Larry O'Neill of Vienna turned in the day's high games of 279.