Mariner 25hp help needed linkage help

[sbf1]

Hi,

I am needing some help with my outboard. I took boat out today and I encountered some carby issues. Engine would idle but when you attempted to apply the throttle it would cut out. I noticed when I had the cover off in the water that there was a linkage not connected to anything. Not sure if I bumped it off.

When I returned home I pull the carby apart and cleaned it out. I refitted it and engine now starts and revs but won't idle

I am convinced this linkage that I have pictured below has something to do with it. I think it has something to do with the timing and throttle. I have also taken a photo of engine for identification.

Could anyone help with advised where it is meant to be. Otherwise could anyone advise of a good marine mechanic in the parramatta area?

Thanks