The service parameter for Rabbit Speed cannot be adjusted for individual directions. I believe this is a normal characteristic of the machine, because travel direction is usually with forks trailing. To adjust service parameters a "service key" is required. It is a small box with a serial cable coming out of it. The Toyota part number for this service key is 00590-42683-71. Sale of the key is restricted, but if you have a friend in the business they may be able to procure the key for you. I myself cannot. Good Luck
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