Koga Miyata Worldtraveller; cable routing

[YourroyalHEINniss]

On my way back up in rebuilding this '91 Koga Worldtraveller.
The quality and thus ease of construction continues to surprise me.

Now; cable routing.
The outer cable is worn and needs to be replaced in my opinion.
Having screwed up this task twice previously on a Reflex MTB and more recently on a early GT Tequesta, I thought it would be wise to ask for some advice.
Does the outer cable runs through? It seems so because pushing/pulling from 1 end means movement at the other end. Is the an easy (or even a possible) way of replacing the cable?
Or does the outer cable stops at a certain distance in the top tube?
Can I fiddle about with the plastic guidances?

(oh, and yes, I've mounted a DX seatpost; it seems the right thing to do with all the other parts being from the same group)

Grz

@Spankyfart
@Elev12k

 

[Spankyfart]

Yup, the whole cable goes through.
To make it easier, use an inner cable that is really long, run through both outer cables and then let it guide the new cable when you pull the old one.
Bit of lube that won't react with either rubber or metal to make it run through easier.

 

[Elev12k]

2nd that. Good advice. With FullPros for example the cable doens not run through.