14-08-2017, 07:04 PM
It's definitely missing something, and I'm sure that's the cause of your problems. There should be a brass insert in the "compensating well". I've only taken them out once in a blue moon but If memory serves it's a long brass tube, from the top it looks similar to the rest of the jets. There are a couple of suppliers for parts, but I don't know how easy it'll be to track down. I just googled "zenith carb jets" and came up with a few suggestions, including "zenithcarb.co.uk".
If it were me I'd find another whole carb, as a spare is often useful anyway. May sound like overkill, but probably easier to source.
If it were me I'd find another whole carb, as a spare is often useful anyway. May sound like overkill, but probably easier to source.