Originally Posted by vox_incognita

Stopping the negine, RSV governor ,Bosch yellowjackets:

"Engines not equipped with a special shutoff mechanism are stopped by moving the governor control lever to the Stop(Shutoff) position. In the process, the lug of the swiveling lever presses against the guide lever.. This then swivels to the right and shifts the fulcrum lever, and with it the Control rack, to the Stop (Shutoff) position. As the governor springs cease to exert pressure against the sliding bolt, the flyweights are free to swing outward."

The LP rep kit (check valves+ o-rings) has a number #0015861207 (Bosch 2 447 010 044).

Inside of the LP, behind the roller assembly (just knock the pin #10 out to remove it) resides the plunger rod. It is sealed by a small o-ring #16 (remove the rod, use a pick to remove the old o-ring fron the groove inside the LP).
Bosch order number: 2 440 210 002 =MB A 010 997 86 48 =010 997 86 48 . Green nowadays.

The primer pump is widely available, get Bosch or MB (which is Bosch).
The only difference with your LP may be the banjo thingy that accepts the hand pump.

Overhaul is pretty easy, just observe the proper orientation of the valves and spacer rings of the inlet and outlet.

Also check out the Electronic parts cat ,find the exact subsection of your vehicle,the parts # are still relevant and if not one could easily find the new part # or the cross reference on the internet.

https://mb-teilekatalog.info/index.php?lang=E&mode=BM&class=6

I'd address one issue at a time, start with the most probable/easy to do. And make sure all fuel lines are in good condition.