hi i have a question to ask regarding my stihl fs120 brushcutter can anyone tell me the correct way the fuel hoses goes . there is the fuel hose that enters the bottom of the carby .there is 2 hoses a long and the short that go to the primer button does the long one suck the fuel up or is it a drain whilst the small one goes to the top of the carby ? im confused what side of the primer they attach to .hope this is not to dumb of a question. thanks