I have a 1973 Larson Ski Shark. Has an (1973) 85 Hp Johnson outboard. How do you check the fluid on the tilt trim? On the motor plate (thing) there is a canister about the size of a beer can or so. It has a lid on it held by two screws. Is that the resivour I'm looking for? Then how so I check it? Thanks for any help. And sorry for such a stupid question. Please e-mail me at tandjkerr@parod.com