GS 450 -81 nozzle press fit?

[viggo]

Hello
I'm Viggo from the north of Sweden. I have a GS450 I'm spending the winter with. I was planning to change nozzles in the carburettor and opened it up to remove the old ones. But they seem press fit - there's no screw hole or anything to get hold of to get them out. Does anyone know how to replace them? I do not want to use violence and destroy my carbs... I guess it is possible in some way?

Appologizing for the bad English

[keman]

Nozzles? Do a search for Carb tutorial and read Bikecliff's website, especially the Carb tutorials. Whole new world of knowledge in there for our bikes.


If you are talking about the air fuel mixture screws, they are capped with a plug from the factory. The plug can be drilled, but you need to be VERY VERY careful not to let the drill bit hit the head of the screw once it pops through the plug. Once drilled, the plug can be pulled out by screwing a slightly too large sheet metal screw into the plug... Twist and pull. Check out the Carb tutorials before you do any drilling. I would hate to see you destroy a Carb drilling the wrong cap.

I am sure Basscliff will be along shortly with links to the info.

[viggo]

Hmm I do not really know English therminology... It's the tube with a needle in it going up from the floater house. We call it the Swedish word for nozzle at least. Usually they have a cut for a screwdriver so you can change them but mine hasn't - in any end.

thanks by the way for the answer

[pete]

It sounds like you're talking about the needle jet, and in that case yes it is definitely an interference fit in the carb housing, it doesn't screw in.

It's held in place by an O ring.

A pair of pliers can be used to remove them, but be careful and apply force gently to avoid scoring the needle jet or breaking it.

BassCliff's site has a carb rebuild document specifically for these carb's written by Flaming Chainsaws. That will cover the whole process for you

[viggo]

Thank you Pete, that was just what I needed!

[pete]

No problems, glad it helped