* Wall Street set for positive open after CPI
* European stocks weak, Bund yields at near year high.
* Dollar stronger, boosting Japanese export stocks
* Euro weakens on indications of Irish EU "no" vote
By Jeremy Gaunt, European Investment Correspondent
LONDON, June 13 (Reuters) - European stocks recovered and Wall Street looked set for a positive start on Friday after U.S. inflation data fell short of investors' worst fears about rising costs.
The dollar remained broadly firmer with early signs that Irish voters may have voted "no" to a new European Union treaty adding to euro weakness. Ten-year euro zone government bond yields were at their highest in nearly a year.
U.S. CPI data came in with a higher-than-expected year-on-year rate of 4.2 percent in May, up from 3.9 percent a month earlier.
But investors focused on core inflation -- minus energy prices -- which was an expected 0.2 percent month on month.
"It's not as bad as it looks. It's pretty concentrated in the energy sector," said Lindsey Piegza, FTN Financial market market analyst in New York. "What is scary is the year-over-year number. You never wants to see a 4 (percent) handle."
Inflation worries currently preoccupy financial markets and were hitting stocks and bonds in Europe while bosting the dollar.
"Inflation is a major negative factor for equities," said Arthur van Slooten, strategist at Societe Generale, in Paris.
The FTSEurofirst 300 <
> index of top European shares was down 0.2 percent, well off its lows. It gained 0.9 percent on Thursday, snapping a six-session losing run.Earlier, Japan's Nikkei stock average <
> rose 0.6 percent, primarily on the view that exporters would benefit from a weaker yen if the dollar rises.Still, the benchmark Nikkei average posted its worst weekly fall in three months as worries about rising inflation and interest rate hikes dampened investor appetite.
The Nikkei ended the day up 85.13 points at 13,973.73. Over the week, it lost 3.6 percent.
Crude oil <Clc1> was down slightly in the day but still above a heady $135 a barrel.
DOLLAR, BONDS The dollar rose against the euro and the yen and was on track for its best week in over three years against a basket of currencies.
Traders were sensitive to comments from Group of Eight finance ministers meeting in Japan over the weekend.
"If the tone of (the G8) statement is unchanged from the last meeting when coordinated action was mentioned, this would give more support to the dollar," said Michael Klawitter, currency strategist at Dresdner Kleinwort in Frankfurt.
The dollar index -- against major currencies -- was up 0.6 percent at 74.269. It was up more than 2 percent on the week and heading for its biggest weekly gain since April 2005 <.DXY>.
The euro was down 0.8 percent at $1.5319 <EUR=>, with losses exacerbated by the early indications from Ireland. A "no" vote could scupper EU reform plans.
The dollar was up 0.3 percent against the yen at 108.28 <JPY=>. Inflation worries continued to hit fixed income. Bund futures hit their lowest price since July <FGBLc1> and the 10-year euro zone government bond yield was at 4.635 percent <EU10YT=RR>, also having hit the highest since July. (Additional reporting by Blaise Robinson; Editing by Gerrard Raven)