Old dolmar disc cutter help

[Husqvarna King]

Looking over an old dolmar disc cutter for someone, it runs but has a fuel leak. Replaced the fuel line but the leak appears to be from the part pictured which screws into the tank (it didn’t have an o-ring, this was added to see if it sealed. Does anyone know where I can find the part. There’s no number on the machine. But it’s the same red and black and similar size and age to a 166 dolmar chainsaw. Thanks in advance

[ChrisNewport]

more than likely a 309. im pretty sure there should be a fibre washer under it when screwed into the tank.

[Husqvarna King]

Thanks for that, found a couple of parts diagrams and see what you mean, there was no sign of that on the machine I’m looking at but it hasn’t been used for a long time 👍