So my saito fa92 has a washer, nut and lock nut. With the prop on and then the washer and nuts put on theres no room to put my spinner nut on there. I'm guessing the spinner nut takes the place of the lock nut. Am I correct or am I missing something here? Thank you

Is this a dumb question and thats why nobody wants to answer or is it a bigger mystery than I thought!? lol

you are correct that the spinner nut takes the place of the others.

Takes place of both nuts that are included with the engine? or just the "lock nut" ?.

i use only the spinner nut.

On 4 stroke it takes the plane of the lock nut. 2 strokes only need the one nut so it's the only thing you use on them.

I have uswed enough of the LAs to know when I get a new one to pull out the head screws one at a time and use locktite on each one, let the engine set over night before starting. The screws come loose and you get leakage from the head. Just the nature of the beast. Never once have I pulled the gasket. Even seeing it on the instructions I have never removed one from an LA. Like John I'm pretty sure the head screws came loose. I have cut slots in the top of the screws to ger a flat screw driver onto them to get more torque on them.

He, he

Ah I think you replied to the wrong thread GB