new problem with throttle on 150 johnson 83'

[bcraigan]

Thanks man! Very appreciated!

[bcraigan]

Another question... How hard should it be to push that arm forward, basically throttling it up? It takes a decent amount of push to get it forward. Is this correct? By the time I reattach the cable the shifter at the front of the boat can't push the throttle forward. This may be partially from the cable which will be replaced,but is there somewhere else I need to look? Thanks again for all the help.

[tsubaki]

I would be inclined to think it was both the control box and cables causing the problem.
If you got it on the list to replace, do it and see how much it improves it.
The center post (in the control box) that the shift arm rides on is always subject to corrosion, causing the nylon bushing to swell and cause friction.
While you're in there, remove it and hone out the hole that the bushing goes into and clean and grease everything else that moves with waterproof grease.

[kheid]

dont know if mine was the same prob as yours but adjusting the shift cable solved my problem.when shifting in forward,the boat would fall on its face,I looked under the cowling and noticed that exact piece kept (popping off) ...My cable was pushing it too far and then it would pop off ,I adjusted the throttle cable a little the other way and then it was fine...By the way that was on a 1985 johnson 235

[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).