Yamaha fuel issue

[Eastern4shore]

I had some bad fuel and am in the process of working it out of f115 motors. i have never attempted getting to the VST, is it a highly skilled job? I am hoping to do this job while boat is in water as it requires a travel lift to haul out. Does this sound over ambitious? Any good pics online? Also going to look at inline high pressure fuel filter. I am guessing I release the pressure at the valve stem on top of fuel rod. Will it build pressure back by itself once everything is reinstalled. thanks in advance for help.

[blockhead]

see if this helps: http://www.bogueinletnc.com/yamaha/8.html

[bottom scratcher]

I just did two F115 VST filters and a pump. It's not a job I would do on a lift. It involves some manuvering to remove the intake manifold and various connectors and hoses. They'll be alot on small nuts and things.