There's numerous sub models of that, see below..
And even with that, there's pic's but not very helpful:
https://jackssmallengines.com/jacks-parts-lookup/manufacturer/kawasaki/4-stroke-engine/fh500v/fh500v-as02-4-stroke-engine-fh500v/control-equipment Did that You Tube link help at all?
In any event most machines, the carb throttle is connected to the governor shaft (coming out of the engine directly). There's often a small pulling spring around that piece of linkage to keep things taught.
With that said, there's usually a spring attached to the governor arm. That should attach to
the operators manual, adjustable throttle...
Obviously it'll pull harder or softer on the governor adjusting the RPMs...
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