1962 6 hp needle and seat question

[islander9]

1962 6 hp Merc serial number 1489784

Cleaning up the fuel system to get the engine going after years of storage and the float needle and seat are like no other I have ever seen.

The float seat does not have a tapered bottom in it for the needle to seal against. Said differently, the needle will pass right through the seat body and seems to seal against the carb body below the seat. The seat doesn't seem to be damaged, or modified in any way.

When I look up the aftermarket needle & seat Sierra pn18-7057 it appears to look like a traditional needle & seat with a matching tapered bottom/seat, and yet when I look up the OEM pn1395-92581 it appears to be what I have.

I have a factory service manual and you can't tell by looking at the set up if the seat has a bottom in it.

Would someone with some vintage experience happen to know if this correct, or do I have a defective seat?

 

[islander9]

Addnl info, I am needing to find out what is going on with the needle and seat because I am unable to get the spec'd needle height because the needle is too far into the seat (it should be protruding the seat by 5/32"). I'm thinking either the wrong needle was in the carb, or somehow the bottom of the seat has been broken off (although it looks factory, no damage)
.
Hope this makes sense.

 

[Chinewalker]

The brass seat with the 5/16 hex head to install/remove it has a tiny hole in the end of it for the needle to seat in. Remove your carb's seat and take a look. I know some later replacements had a plastic seat/hole bit pressed into the end. I would imagine if they can be pressed in, they can fall back out.

 

[islander9]

Thanks that is what must have happened and I didn't notice when I was soaking the carb parts.

 

[racerone]

Some of those may gave a rubber seat.----That may have disappeared with the chemicals.----Order new float valves.