Another Predator 212 Issue (Stuck throttle)

[MemphisRich]

Im sure I missed it while searching the forums and Im sure its a simple fix. So if it is either of those please forgive me.

Here is the issue that I am dealing with. As stated in my introduction on here, I am new to small engines. (not the issue) I have a predator 212 that is fresh out of the box (5 months ago) and we started it for the first time last night after finishing the build on the drift trike. It started on first pull, sounded great. Went to pull the throttle and noticed it wasnt working. So we cut the engine off, adjusted the throttle and got it to working from the twist handle. Fired it back up, went to move it from start to run and it immediately goes into WOT (wide open throttle). The rpm does change when moving the slide lever from start to run and it idles up and accelerates but as soon as you move it back to the start position it will go back to idle and sounds fine. Also, twisting the throttle doesnt change anything when it is in WOT while in the run position. I have seen a few post about it being the clutch but I would think if it were the clutch it would stay in high rpm and not fluctuate like it does. I am here for any answers that you may give.

 

[JTSpeedDemon]

Could we get some pics of the governor linkage?
Something sounds very messed up.

 

[950speed]

Throttle return spring might be needed
Have you loosened the nut on the throttle bracket?
Is anything binding?

 

[MemphisRich]

Yes I will post pics. Didnt even think about that.

---------- Post added at 10:52 AM ---------- Previous post was at 10:51 AM ----------

Yes the nut has been loosened. Nothing is binding that I can see. Let me go take some photos and I will post.

 

[MemphisRich]

Photos of throttle

Here are some photos. If more are needed please let me know.

 

[mckutzy]

It just might not have enough to return by itself....
Most here add an additional spring to the throttle lever( those with Gov intact ), on the end and loop it to the fan shroud. Itll be enough to return and none to worry about to overcome on the hand throttle...

Also check to see that the cable isnt pulling the throttle lever by any means....Like why you tightened the crew to pinch the cable.
Sometimes itll take off, if its slightly pulled a bit...

 

[MemphisRich]

Update: We installed the throttle bracket and removed the governer. What we have noticed is happening before this is that the throttle lever on the carburetor isnt closing all the way and isnt being opened properly when the throttle is turned. Back to the bracket; its working better but not perfect. You can only have the choke open barely for it to even try and run properly. If you move the choke all the way to the right (towards run) it will just take off on you (has happened twice). I did get a chance to ride it, with the choke slid barely towards run but the throttel is still not right.

 

[mckutzy]

When you say removed the gov... Do You mean all of it internally? or just disabled it from outside and hooked directly to the carb butterfly????

 

[MemphisRich]

Just externally and hooked to the carb butterfly

 

[JTSpeedDemon]

Uhhhhhhhhhh........
Baaaaad idea!!!!
The governor gear isn't meant to turn that fast, so chances are it'll pop off and/or explode inside the crankcase, causing damage that is EASILY avoidable!
Please remove the internal governor parts!

 

[mckutzy]

OK I think I see whats happening here.........

The butterfly is opened all the way... The Gov rod is put on wrong... so it is cocked it open...
Remove the rod and youll probable see it return against the black screw(the idle screw)...

So reinstall the rod and lever for the gov, the small spring for the butterfly on the carb, the other spring on the lever for the gov to the throttle lever....

 

[MemphisRich]

Which way is it supposed to be installed?

 

[mckutzy]

That was way harder than it should trying to find a quick pic on this...

But here is a pic I found...
I can take a better pic(from a motor I actually have on hand) if need be...

You can see its just slightly cocked open for the starting.....

 

[MemphisRich]

The only thing I see in the picture that is different is the spring/screw setup right in the middle. My motor doesnt have that.

 

[mckutzy]

In your 3rd pic of the 4, you'll see the relationship of the butterfly valve to the pic I posted...
Yours It is cocked wide open, and in the pic I posted is slightly open...
Reinstall the operating rod and small spring.. Should solve that...