new problem with throttle on 150 johnson 83'

B

bcraigan

Junior Member
engine12.jpg


I posted a picture here of my new issue area. The large white arm in the center will shift forward, but is pretty tight. The big problem now is that there is a s shaped piece of metal coming off the top of the center white arm. It attaches to a black plastic piece that is attached to some arm coming out from under the fly wheel. basically it forces what ever that arm is foward when the arm is pushed foward by the throttle cable. Well that s shaped rod coming off of the top of the white arm in the picture will not stay attached to that small black piece of plastic now. Any ideas of what to do? Thanks for any info. craigan.
 
It sounds like the nylon ball or socket has broke. Cheap and easy to replace.
Ball #0313703
Socket # 0313700
About $5 each, get at least 2 each of them, the other end of the linkage is the same part #'s.
If you can't find them locally, use this link,
http://shop2.evinrude.com/ext/index.aspx?s1=99e5b517dd03c61aac2b6b1cbb4b0cfa
Click on your motor year, horse, type and then click cylinder & crankcase , see diagrams and lists find #75 SOCKET, #76 BALL.
 
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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.
 
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.
 
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
 
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...
 
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).
 
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