Looks like a 1995 model.
The primer valve is open, it should be closed - turn clockwise until it stops.
Replace missing primer valve cap, it is not from a tire but a special gasoline resistant type - see your dealer.
Hard to tell but it looks like the throttle lever cam roller is broken.
It looks like someone adapted a Suzuki fuel filter on the motor.
Have a trained Evinrude tech check over the motor for you and inspect the VRO system and check for missing or damaged hoses, filters, clamps and flush out the oil tank in case of sludge or slime at the bottom.
I would recommend the original factory water pump kit.
Would you happen to know the shift shaft height for this motor? Thanks, Craig.
3 Cyl. 1978-UP 21-23/32"
Found this number on freeze plug G2302637 it's around a 93 Johnson could you help me find exact year
Can you post pictures of the motor cover sides and back if it still has the original decals on it?