I can't seem to remove the main exhaust valve. I have a Clymer manual and it says to remove the screws and "lift it out". How easy should this be? There is a LOT of carbon but the valve flaps around.
I scraped off some of the carbon and shot some penetrating oil on it, but it's still "unliftable" Anyone got any tricks for this? I'm thinking about taking a hammer and screwdriver to it but I'm afraid I may damage it. I'm hoping there is a special method to removing it that the manual forgot to mention.