That would be me (I think):
http://rubatoguy.home.mindspring.com/afm.html

Mostly just shows it taken apart - but you can see the spring wheel.

Todd

John Rodgers wrote:

> Jay L Snyder wrote:
>
> > I would check the fuel pressure at the tee near the regulator.  Should be
> > around 29 psig.   Sometimes they get crapped up and cause higher pressure
> > than they are set for, pushing more fuel through the injectors.  The ECU
> > can only compensate so much in terms of injection time.  Go through the
> > Bentley checklist using a multi-meter at the ECU connection.  It will tell
> > you what readings you should get and indicate any shorts.  I also would
> > measure the VDC coming off of your O2 sensor.  Run the engine until it is
> > warm and then shut it down.  Disconnect the O2 sensor wire and read the VDC
> > when the engine is running.  Should be 0.7VDC or slightly higher.  Does
> > your temp gauge read OK?  Last resort would be to open up the AFM and lean
> > out the spring by a few notches.  Tightening the spring will lean it out.
> > Go 2 or 3 notches and drive.  At some point, it will stumble from being too
> > lean.  Back up from there.  I put a new AFM on my '85 and was able to go 6
> > notches leaner,if I remember correctly.  I connected the voltmeter to the
> > O2 sensor wire to check the signal as I was driving down the road.  Don't
> > go too lean--slightly rich makes the engine run cooler.
> >
> >                                                         Jay '85 Westy
>
> A while back, someone posted a website that had pictures of the internal works
> of the AFM, and described how to open clean, adjust, replace, and reseal the
> unit. Great information. Is that site still available. Are the pics still
> there. I's like to know for my own re-edification.
>
> Thanks,
>
> John Rodgers
> 88 GL Driver