1) remove the buttpad (varies by model).   Once removed there's a hollow cavity in the rear.

2) insert a 14mm deepwell socket on an extension that's at least 8"

3) loosen the 14mm nut inside.  This allows the buttstock to be removed

4) the forend is a litte tricky (and the hardest part). At the forend tip are an inner and outer cap.   Remove the inner cap.

5) remove the outer cap (forend) using a small flat metal barstock.  you'll need to locate some metal barstock to unscrew the outercap (penetrating oil inside works wonders).

6) remove the forend.  Hint: small wooden blocks can be used to gently tap the forend forward and off on the match model.

7) the entire barreled action is then exposed and ready for strip.

8) holding the lower-lever near the forend, use a brass-punch/hardwood dowel and tap out the lowest/forend pin.   The level and return spring will come out.   careful as the spring is under pressure.

9) at the lower rear tang, remove the screw in the underside.   This exposes more of the action/sear assembly

10) at this point punch-out the remaining pins and remove the sear and fallblock.

11) the fallblock houses the firing pin and the retainer along with the compression spring can be slid-out.   There is a fulcrum pin holding the firing pin.  punch it out.

Clean, lube, and reassemble by reversing the above steps.

Now for the good part, pictures.   pictures tell a thousand words.

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Boats,

Good question.  While I'm not the expert on this model, my short answer is they're rare.   They were not made in quantities like the Martini's.   The manufacturer, Weihrauch, was (still is) small and airguns are their primary business. 

My German friend (who's also a Linksschütze - or left hand shooter) say's they're rare in Germany, so you can imagine finding one here.    One club shooter had one and sold it years ago.

They were used in a competition called 'match rifle'? as my friend above has informed me.   That competition stopped in the late 70's.   You can add it all up; no present competition use for these fine rifles (in Germany), and a small manufactured quantity.

At US prices, if I found a cache of them, I'd buy them all and sell them for retirement money.

It's unfortunate, but, there was a few that came for sale this winter.  Unfortunate because they were Estate sales.

I would defer to Biggie on any corrections to the above.

Chuck

i don't recall UK gun laws changing in a way that affected .22 Martinis in the UK in my shooting lifetime---50+ years. In the 1960s, my old indoor range had stacks of Martinis in the lockers which nobody wanted or used. The reason was fashion--every rifle shooter wanted what the top guys were using and that was an Anschutz. The .22 rifle shooters in the UK normally shoot prone, indoors and at 25yds. The more adventurous go to the NSRA meeting at Bisley once a year and shoot at 100yds. The majority only own one rifle and want it to be the best available---or thought to be the best!
Fred

Very helpful, Chuck  Thanks for posting!

I am bringing this thread back up, because I am in the midst of trying to understand my own HW52 project. I have a very qualified barrel 'smith setting a new centerfire barrel up on my Beeman-branded receiver, and Chuck has been a very steady reference!