Seized Throttle Shaft (Carby Throttle Shaft)

[gazza2010au]

Hey Guys

I'm still in the process of getting this 97 GTX together and since both of my carb's have been sunk i tried to order a set from overseas and got the buck from the bull so to speak

Now i have just disassembled the second carby and it was worse than the first one but i'm going to have to tuff it out and clean these carbies

I had one sitting in the ultrasonic cleaner with the heater on at around 90 degrees Celsius and soaking in a product called "DESALT" it's new to me never heard of it untill today but supposedly gets rid of salt build up,directions are to soak for 7 days so here goes

Does anyone know how to free up a frozen or seized throttle shaft? i have never needed to pull one a part before, i'm thinking the butterfly screws might be a pain in the ass and i may need a press for the shaft?

Anyone else done one of these before?

 

[Coastiejoe]

I've pulled them in the automotive word. Mark the top of the butterfly as it gets worn and seats overtime. If you flip it over the fit will be off.

The screws in my case came right out. I used an impact driver to break them free.

The SeaDoo carbs require a JIS screwdriver. Look like a Phillips but is not.

 

[gazza2010au]

I've pulled them in the automotive word. Mark the top of the butterfly as it gets worn and seats overtime. If you flip it over the fit will be off.

The screws in my case came right out. I used an impact driver to break them free.

The SeaDoo carbs require a JIS screwdriver. Look like a Phillips but is not.

Thanks Joe :thumbsup: I already rounded those two small screws with the impact driver but seeing the carby's were sunk its most likely those screws were never coming out without a fight

 

[Coastiejoe]

Dremel tool. Grind the heads off. Then hope there is enough stud for vice grips to be able to grab them.

 

[gazza2010au]

Dremel tool. Grind the heads off. Then hope there is enough stud for vice grips to be able to grab them.

Solid advice thanks heaps :thumbsup: i also stripped the two inner screws in near the needle and seat so now i need to invest in a dremel

 

[Coastiejoe]

On many carbs, the studs are longer on the backside. If so, grab them there and thread them through as if you were tightening them. This way the damage threads from the vice grips never tough the plate shaft.

 

[racerxxx]

STOP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


You need to file the back of the 2 small screws that hold the butterflies on, they are staked on the back so they don't rattle out. If you don't you will strip the throttle shaft rendering it a useless piece of junk.

 

[racerxxx]

http://www.seadooforum.com/showthre...ct-Clapped-out&p=303244&viewfull=1#post303244

 

[gazza2010au]

Thanks Racer I read about bending those screws but totally forgot about it untill you just mentioned it :thumbsup: do u just use pliers and grab both bolt ends and squeeze them towards each other?

Do u remember the specs for those allen screws? those are the two i stripped i also snapped 1 of the needle and seat screws it was corroded the head just twisted off

I think these screws are to small to TIG weld a nut onto them for removal so i'm going to use the dremel but that N&S may have to be drilled and retapped

 

[racerxxx]

If I get a chance I'll look into the screw length. The one down by the N/S is a bitch. I did in the the milling machine and was still nervous.

Your gonna need to ream the plastic bushings for the throttle shafts unless the just have build up on them. I've done that before for a guy and it was a pain. There was corrosion under the bushings that caused the interference on the shafts. I'd still keep trying to source new or good used carbs

 

[gazza2010au]

Thanks Racer, Also how did u get your carby so clean inside the diaphragm?

 

[mikidymac]

If the carbs are as bad as it sounds with that much corrosion they are a lost cause. If the shaft is seized and screws are all seized then the internal passages are corroded too and you will never get them clean.
I would replace them.

 

[racerxxx]

This is what I used in a cordless drill


http://www.harborfreight.com/5-piece-stainless-steel-wheel-and-brush-set-66129.html