Clutch has been replaced a few times. Mainly from a heavy foot though.
Still running like the monster that it is.
Air conditioning has been replaced. Loves to blow hot air.
Best thing about it is people sometimes have no idea what it is. My favorite of all.
I am looking for a nice blue 840 model and willing to wait for the right one for sale let me know.
Look at www.mobile.de and import one from Germany.
You can get good 850s from about 10,000 dollars.
840s are much rarer.
I sold my 850 some years ago in Germany to an American who claimed he would import it to the USA and make a lot of money on resale.
Take a holiday over there and check it out.