There is probably not a single thing on that bike that is specific to Mongoose. In other words, every adjustment and component on it is in accordance with the third-party manufacturer's specs.

Find one of their generic manuals here...

http://www.mongoose.com/usa/usaeng/mtn/man_inst

This site is awesome: http://www.parktool.com/blog/repair-help

Google will find just about anything for you without the time-delay of asking one of us.