For I.M.F., Pledges, and Demands, Are Rolling In WASHINGTON - Major emerging powers stood ready Friday to pledge money to bolster the International Monetary Fund's crisis-fighting war chest, though Brazil was holding out for promises that the bloc's voting power would increase at the global lender. Russia said Thursday that the Group of 20 leading advanced and emerging economies would be ready at a meeting Friday to commit enough new money to fulfill a request by the I.M.F. chief, Christine Lagarde, for at least $400 billion to draw a line under the euro zone crisis. Russia itself would offer $10 billion, said Sergei Storchak, a deputy finance minister. "Trust me that the G-20 will announce the final amount," Mr. Storchak said. This will be an amount that will satisfy the management of the International Monetary Fund. Support from Brazil, China and Russia is crucial to the doubling of the I.M.F."s crisis fund. Europe and Japan have pledged $320 billion. The I.M.F. has warned that the euro zone's debt crisis presents the gravest risk to global economic expansion, and financial markets worry that Spain and Italy may require bailouts, following Greece, Ireland and Portugal. Enlarging the I.M.F."s coffers could offer assurance to investors that the crisis could be contained. Ms. Lagarde said Thursday that she expected to reach commitments for the funds this weekend during meetings of the I.M.F. and the World Bank. But Brazil said that as a condition for putting up the money, emerging powers wanted new pledges to recognize their fast-growing global economic weight written into the G-20 communiqué. They are frustrated over delays, particularly by the United States, in implementing an agreement to reduce Europe's sway at the I.M.F. and lift China into one of the top voting slots. "What we want and demand in every meeting is that this commitment be reaffirmed," Guido Mantega, the Brazilian finance minister, said after a meeting of officials from Brazil, China, India, Russia and South Africa. Mr. Mantega drives the point even more forcefully in a speech prepared for delivery Saturday to the I.M.F. steering committee, saying it is no longer enough simply to repeat that voting reforms are crucial for the effectiveness of the I.M.F. "Progress on this front has been limited and slow," he will say, according to the text. Canada, meanwhile, is pushing against Europe's dominance on the I.M.F."s 24-member Executive Board. It wants two votes to be held when the fund decides how to use its new resources, one by euro zone countries and another by others. The idea would be to dilute Europe's power on issues related to the euro zone. The Canadian effort reflects a growing concern among non-European countries over the fairness in the global lender's dealings with Europe. The region has the largest single bloc on the I.M.F. board, and the fund is headed by a Frenchwoman. "Given that the major challenge here is a sovereign debt challenge in euro zone countries, and that euro zone countries are asking non-euro-zone countries to contribute to resources at the I.M.F., our view is that there ought to be two votes," said Jim Flaherty, the Canadian finance minister. He has a sympathetic ear in Bahk Jae-wan, the South Korean finance minister, who said, "Their recommendation merits some consideration." Also Thursday, a deputy managing director of the I.M.F. said the Bank of Japan should ease monetary policy further to support Japan's still-fragile economy, as the bank had room to take unconventional steps, and warned that a lack of action could deepen deflation. "Looking at Japan's economy, I don't see any fears of inflation," said the director, Naoyuki Shinohara. Rather, there's a risk deflation may worsen given its demographics and weak economic growth. "Japan, with little room for additional fiscal stimulus, needs to rely more on monetary policy," Mr. Shinohara added, noting that the central bank had room to bolster asset purchases and expand quantitative easing. Mr. Shinohara said the lack of a credible strategy by the government to shore up Japan's tattered finances may make the central bank hesitant to ease policy further.