Chainsaw Repair

Sounds like a rogue prototype that didn't make it back to Germany.  084 and 064 introduced in 1986.
That Stihl rep wasn't Dave Gordon was it?

No Pat Brown was Stihl area rep.then. The 064 didn't come out until a few years later,we did receive 2  pre-production  test saws,but they had serial numbers.

I think your Stihl rep was trying to sell off the 056Mag ll.
Here in Manitoba I bought 2 brand new 064's in the spring of 1986, one with heated handles. The 084 was available for order that summer .
That might explain why Walker got so excited in a negative way when I brought my 064 to Sayward in 1988.

You may be right,we did not get 064's until after the 084's,how long I don't remember,almost 1 year later maybe in Northwest Canada.

I think you're right,Stihl held back the 064's to us until we sold off a huge amount of old 056's.
Original 064's were horrible,the stock air filter let by horrific amounts of sawdust straight into the motors,worst I've ever seen,but soon they had the HD filter and they were ok.

Yep on the west coast where you are in B.C. loggers running big long bars and 7 hours a day working in dusty thick bark red cedar and fir calls for a HD air filter.

Completely opposite here in our clean thin barked white spruce with 18"-20" bars the 064 light duty air filters were my favorite.
In fact I converted both my 066's to 064 non air compensating carbs and filter setups.
One of the reasons how I got my '92 066Mag down to the weight of a MS461.
These are my favorite pics of my 1992 and 1997 066's.
'92 is wearing a 20" ES Light , 8 pin rim with no dogs, 064 flywheel and rewind  and '97 a early non air compensate 064 HD filter setup , 28"ES with dual dogs.