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Reload this Page Quietline 1200 Carb Issues
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  #1  
Old 06-06-2020, 07:59 PM
riflemann riflemann is offline
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Join Date: May 2015
Location: Kentucky
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Default Quietline 1200 Carb Issues
My carb been giving fits lately. I tried adjusting and retried adjusting.
Finally found spring to governor was broken. Then found the throttle rod will come up and out of the carb about a 1/4"

I can buy another spring, if I recall, about $12. How do I get the rod to stay in the carb and not move up? Please don't tell me the plate came lose and it and the screws got sucked into the intake!

Thanks for your replies, I have 3 Quietlines, all work for a living and you guys always have the answers for me!
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  #2  
Old 06-06-2020, 08:44 PM
finsruskw finsruskw is offline
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Take the air cleaner off and see what's going on in there.
My X=ray vision is on the blink today.
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  #3  
Old 06-06-2020, 09:47 PM
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ol'George ol'George is offline
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If the throttle shaft moves up/down in the carb at least one of the screws got injested. If it comes all the way up and out, ya swallered both of them. Please investigate as ya'll don wanna ruint yer 'injin with extreme rpm's.
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  #4  
Old 06-07-2020, 08:43 AM
riflemann riflemann is offline
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I had the air cleaner off and that is when i discovered the throttle shaft moving up and down, could not see it behind the air cleaner back plate.

I am going to take the carb off this afternoon and we'll find the problem.
Maybe new screws and throttle plate will fix. Or maybe a new carb. I will be eager to hear your opinions.

Thanks for the replies!
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  #5  
Old 06-07-2020, 10:49 AM
dale c. dale c. is offline
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look in past the choke plate at the throttle plate . you will be able to see it better with the carb off though
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  #6  
Old 06-07-2020, 01:49 PM
riflemann riflemann is offline
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I pulled the carb. The throttle plate had come off the rod and was jambed into the intake but I was able to get it lose and out. One brass screw was missing and I presume went into the engine. I am glad its brass. The other screw head was missing but the shaft of the screw was still in the throttle rod. I will be able to back whats left the the screw out with forceps. The throttle plate is wore a little on the opposing edges perhaps when the one screw came out and allowed the plate to rub inside the throat of the carb but that is not too serious.

So, where do I get 2 of those little brass screws?
Should I try to get a throttle plate while I am in there?

Thanks, guys!
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  #7  
Old 06-07-2020, 02:08 PM
finsruskw finsruskw is offline
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You need to STAKE those screws so they CAN"T come out.

Have you had this carb apart before?

Maybe someone else (PO comes to mind) had and tried to unscrew the screws WITHOUT filing the staked ends off and broke one and maybe compromised the strength of the other enough to cause it to break once they got it running again and after they were done screwing with it.

Whatever you do it will have to come apart now.
The screws are a #4 brass,
A "Hilman" assortment at Ace hardware should have those.

Hope you can get the broken one out
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  #8  
Old 06-07-2020, 03:03 PM
riflemann riflemann is offline
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I never had this carb apart before. I got whats left of the brass screw out.
A quick run to my Ace Hwd and maybe they got brass screws for me.

I will lightly hammer the throttle plate back into shape.

A trip to my dealer for a governor spring. Assemble all and I am back to mowing.

You guys always help me out!
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  #9  
Old 06-07-2020, 03:50 PM
finsruskw finsruskw is offline
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Good deal!!

I usually gall the exposed end of that screw up with a vice grips and use thread locker to boot.
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  #10  
Old 06-07-2020, 06:34 PM
twoton twoton is offline
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I'm curious about the history of the machine. Have you ever had the head off to decarbon? If not and you think there's a screw in the engine maybe it's time to pull the head?

https://www.onlycubcadets.net/forum/...339#post337339
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