wrote:

Subject says it all. The blades appear to be held in place with pins.
It appears that the pruners must be disassembled to get at all of the
pins.

--beeky

Its very easy, you simply undo the nuts with the tool that came with
your Felco's and dissasemble. Good idea to give them a good clean over
as well while your at it. I use a light washing detergent (washing up
liquid) and a coarse scrubber with hot water to remove dried sap etc..
Then just oil, grease the mechanism (a light machine grease does fine)
and reassemble with new blade..

JimW