Refer to Chapters 6.3.17 and 6.3.19 for servicing of the electrical systems. No major repair or alterations, as outlined in ASTM F2483, FAR 43, or in this manual are authorized at this time. To obtain engineering approvals for any major repairs or alterations, please contact Cub Crafters at: Cub Crafters, Inc. 1918 South 16th Avenue Yakima, WA. 98903 Tel: 509-248-9491 support@cubcrafters.com