jarrick
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Everything posted by jarrick
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Primer bulb pulling air but not the usual suspects.
jarrick replied to jarrick's topic in Maintenance help
Thanks for the replies - I've been going over it again. Yes, the bulb is the right way round and the check valve is doing what it should, and I installed the carb kit correctly, without damaging the diaphragm. It could well be the other carb has the same issue. I don't think this carb has a throttle enriching pump. I put some air down the fuel intake and it held pressure. I tried sucking on the outlet pipe (that goes to the primer bulb) whilst blocking the fuel inlet pipe and I can hear air coming into the carb from somewhere - But when I also fully screwed in the H and L adjusters, it stopped the air coming in. Is that supposed to happen? Also, it is easy to blow air into the carb via the outlet to the primer bulb - is that supposed to happen? Many thanks. -
Got an old Tanaka ECS 3351b (33cc) and the primer/purge bulb gets a lot of air coming in from somewhere. Replaced all the tubes with new clear ones and the tube going from the carb to the bulb gets a lot of bubbles going through and hardly any petrol. The saw runs but not as well as it should (though that might be a tuning issue). I've recently cleaned the carb and put new gaskets and diagrams etc, and all the screws are done up tight. I even swapped the carb with the one in my spare saw - and that was even worse. The primer bulb is new and tested ok. Any ideas?
