The Japan Automobile Manufacturers Association urged the government Thursday to press Vietnam to lift its restrictions on imports of motorcycle parts.

On Sept. 4, Hanoi moved to protect local producers by putting a ceiling on imports of the parts. The move has already prompted Honda Motor Co. to suspend motorcycle production in Vietnam.

In a petition submitted to the Ministry of Economy, Trade and Industry, the association said the maneuver would result in a loss of 33.1 billion yen for Japanese makers, along with the loss of more than 20,000 jobs in Vietnam.