new problem with throttle on 150 johnson 83'

[bcraigan]

I have come to the conclusion that my problem is in the shift box with the handle. I can't figure out what's wrong though. Changed the cable but now I still have to push it very far forward to get any throttle at all. ANy ideas? Also on the control box there is a tab that can be squeezed and lifted up. What is it's purpose? I would assume it's to rev the throttle up without putting the motor into gear, but I can't get it to do anything...

[tsubaki]

Yes you are correct about the warmup lever.
Taking one apart is scary the first couple of times.
Pay close attention to the parts locations and what they do, even take pictures.
The culprit is most likely any locations that have to ride on metal parts.
It wouldn't be surprising to have to spray penetrating oil and sit for a while on corroded bolts and fittings on the control box.
The thumb bolt that is near the ignition switch is a friction adjustment for the throttle handles, it is almost never the culprit (unless kids got into the boat and started turning stuff).