It's a Honda Clone 6.5HP... Ever since I got it, it's been running quite lean and low on RPM. Low as if I let go of the throttle, it'll threathen to die unless I give it a bit of throttle. How can adjust the carb? I can't find the screws like on Briggs engines...

Where is it? In the bowl? Thanks!

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...Where is this spring? Thanks!

I've never worked on any Honda's or OHV's before... Thanks!