See also:

Audio system warranty and service
Refer to the Warranty Guide for audio system warranty information. If service is necessary, see your dealer or qualified technician. ...

Ordering additional owner’s literature
To order the publications in this portfolio, contact Helm, Incorporated at: HELM, INCORPORATED P.O. Box 07150 Detroit, Michigan 48207 Or to order a free publication catalog, call toll free: 1 ...

Engine data
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