Saving Old Seagulls

cleaned out the new filter (about 2 hours old) noticed it was a slightly different colour in one place. the filter only seems to work over a very small part of its area, like where the hole into the float chamber is, anyway blew it and cleaned it , checked out the float , valve, and jets. all fine ...

Just put a post up and its dissappeared

Changed the needle position its better it 2 strokes
I think theres not enough fuel getting through as it starts up as soon as it stops I have had the carb apart again and the float and valve seem to work fine , with a mark one blow!
I think the problem is ...

many thanks for the help so far, since this morning I have taken the carb off checked out the float and valve all working perhaps the final shut off is slightly high, but it does shut off when the float is at the top, I raised the jet needle from the mid position to the lower raising the fuel air ...

Sorry I should have put all that in. its a late one with electronic ignition, an Amal carb and I was told that it was converted to 25 to 1. And Or I have read that the late ones can run on 25 to 1 with no mods.
If I run it at the revs that it does not 4 stroke, it runs very well (fast) for 2 minutes ...

hello all, i have had 2 seagulls one i traded in for a ****** and the one I have now. I thought that with all the hate 2 stroke brigade it would pay to have something a little lighter than a 4 stroke which would last a lifetime.
The 40 featherweight starts fine and runs well, however it tends to 4 ...