I have the factory service manual available for the Buck 400. Just send me a message with your email and I'll get it to you. Although there is no charge for this, it would be great if you would visit my website where you could donate any amount to help do things like this with others who need it. Again, there is no charge for this manual, and no obligation to donate. But if you did, I would thank you for sure. Have fun on the trails. www.warriorsoffroad.com
Matt