Mercury 200 pro xs fourstroke screw found rattling around inside cowl

[2326kevin]

Mercury 200 pro xs 8 cylinder 4 stroke
Model 12000027a sn 2b637669
Found this screw(attached) rattling around in engine
Can't locate where it came from
It has 10mm head and is 135mm long ( 1 3/8 in)
It also has a washer on it
Any suggestion where this screw vibrated out from would be appreciated
Thanks

[EuropeanAM]

There are some 8x80 screws in the starter... 8x85 in the exhaust, but I don't see anything that resembles that length.

Of course 135mm would actually be about 5.3".

If it's 1-3/8" long, that's approximately 35mm.

See if you can confirm the diameter of the bolt (of course, your Local Dealer should be the one dealing with this for you).

The second image with the spring... actually resembles a clothespin spring.

[2326kevin]

You are correct 35 mm and I used clothes pin to hold it
Thanks for your efforts
The source of thos bolt is still a mystery

[EuropeanAM]

See if you can confirm whether the bolt thread is 6mm or 8mm.