Your prickers 4122 are fine. They’re the right size; they should be 0.23 mm. The 4606 are also 0.23 mm and are more commonly found. The nozzle is...
That is a very nice tool. How do you secure the needle? Is there any clue, how old it is?
@Tony Press I had a close look at the cardboard box and the manual. No date stamps. Neither on the cardboard box nor on the manual. @Blackdog I...
The rising pump handle is not a reliable indicator for a leaking NRV. It rises only, when the pump leather is sealing off perfectly and the...
The NRV pip and seal are important parts in this stove. If the NRV starts leaking, the fuel will rise in the pump tube. At the moment the fuel...
A rare stove in good condition. Very nice — thanks for sharing. It’s great that it still serves its purpose after nearly 100 years.
Optimus 96L with upright tin. [ATTACH] [ATTACH] It came with cardbord box and tin. The upright tin is painted in the Primus color scheme, but...
Unfortunately, there were some periods, when some factorys mounted the NRV without any washers. Just a small brass rim in the pump tube bottom,...
2/3 to 3/4 should be fine. But not more than 3/4.
If the burners are clogged by coaked fuel residues, there will be problems in fuel emitting, causing poor performance, when the tank is...
Good Morning, I have been successful in removing NRVs with my selfmade tool. Might be worth a try. You can see it here: New member and how to...
Here is my "Juwel 34", made in GDR. Includes a maintenance kit and funnel. [ATTACH] [ATTACH]
Congratulations! A beautiful stove in excellent condition. Great with all its accessories.
That is what I found. All marked "PRIMUS SWEDEN" except the 1957, which is marked "BURMOS". The 1935 is marked ZN. One 1936 (the flat one) marked...
Good Morning, I think the markings on the nut correspond to the date markings on the tanks of the stove. Z (N) means 1935 and AA (1) means 1936,...
How to remove stuck NRV when the NRV head is damaged.
I have a Optimus 111 (silent burner) that had the same problem. It had a little crack on the underside of the burner. The fumes ignite, when the...
Really beautiful stoves. Congratulations. Perhaps the stove run dry once and overheated at the last moment. That might explain the wrong location...
I made the tool by eye and with a new NRV as a reference. The shape is made by tilting the cutting wheel only. There may be more professional ways...
When using a standard NRV tool, I've been experimenting with boiling water and freezer. I could not find any difference. The NRV were still...
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