In picture #4 it almost look like #1 and#3 head gasket was installed wrong.----Tab should be to the outside.----Post another picture of that cylinder head.
No---Fuel pump output is fairly low and depends on the crankcase compression pressure.----Not vacuum.-----So revisit carburetor work.-----Something is wrong with float or float valve.
Clearly the reason that cheap plastic parts are disgusting.------So the gasket here is the same as the wonderful steel tanks of the 1960's.-----Easy for me to install one of the older aluminum housings.-----But you have to find used parts !
Froggy----This is a 2 stroke motor.-----There is no oil sump to drain on this thing.------These motors can be submerged for weeks.------Then when recovered . they are exposed to air you have to get them running immediately if not sooner.---Or seek help to get the water out.-----Failure to do so...
Looks like a lot of money spent on parts so far.---Sorry-----Maximum timing advance is set at the factory and does not change for the life of the motor.-----And idle timing looks after itself.---Yes it does.-----Or should I say that idle timing is the point where throttle plates open.-----Be...
Put motor in the center of the boat.----Use large C-clamps to pull motor to the transom.----Drill the top hole at the top.----Drill near top of the slot on the bottom..----Done.
How does it run if your assistant operates the manual fuel pump ?----A standard pump from a lawn mower ??----Put the pump on from a 3 cylinder 70 hp motor a 1983 model .----Or find the 3 cylinder 65 HP model from say 1990 and use one of those pumps.
Looks like both need replacement.----And a total inspection of all steering bits needs to be done.----Visit a good fab shop for parts.-----Mc Master-Carr----Might have bits in their book.
