> ??? my etka doesn't have that on 150-50 for 90/9/65. no addl water
> pump at all! ???

Odd. Perhaps I have a different ETKA. The one I have is the 6.3
european version. It's chock-full of all sorts of wacky
european-market accessories, like super loud multi-tone musical horns,
auxiliary roof mounted turn signals, ambulance stretcher-chairs, and
headlight washers. I guess maybe most people have the US version?

> 
> Still can't figure out what the "tachograph" is for (illustration
> 149-10).
> 
> not there either. but i think i know what you're talking about. kind
> of a large lumpy thingie with a dial and a cable?
> vw had a sort of recorder that wrote like a seismograph onto a
> circular paper disk ... one disk per trip for the truck ... and the
> cops could look at the disk and tell if the driver had been speeding
> since he left the company. ticket ex post facto. :(
> 

Heh. Yeah, looks like a big round faced dial thingy with a face that
opens with a key. That must be it.

If anyone's interested, I could probably direct them to this strange,
foreign version of the ETKA...