I also have a 77' Suzuki 185. Very nice restoration. I have mine in decent condition. The original carb has some problems that need addressed. For now I have a cheap Chinese Carb running it fine... sometimes haha 😅
you shouldn't discard the oil tank like that, the oil pump does more than add 2 cycle oil to the fuel mixture, it also lubricates certain points inside the engine and gearbox and can shorten the life of the motor.