What is this part/component underneath the fuel tank/eng

[down_right]

This is on an old gas MF:TO35 tractor, in the photos its the little
thing right under the black hose, looks almost like some sort of
electrical component (maybe?)

I have 0 idea what this is, but am concerned as it appears to have
at one time (prior to when I owned the tractor) had a sort of rubber
enclosure over it that had worn away over time. Especially if it is
some sort of electrical or other important component I am
probably wanting to replace the protective cap, but it's hard to
find a replacement when i have no clue what it is, and trying to
describe on a phone call to the senior citizens at the local
dealership hasn't been very productive so I am hoping someone
here will be able to recognize it

Thanks

 

[jt501]

I think thats the neutral safety switch. Works off the H/L shifter when wired up.

 

[garymck]

That is what it is. The neutral safety switch, part 181 140 M91.

 

[Stan Coryell]

This site has the switch and the boot. I attached the link for the boot.
Untitled URL Link