I built and ported 8-10 Husqvarna 394`s seems like 10 -12 years ago for some woodyard workers that were bucking hardwood logs down into firewood lengths in commercial firewood yards. I had to repair each and every chainbrake as it was mandated that they had to be present and work correctly in these yards. The assembly of parts to connect the flag/handle took the most patience, the big compression spring took the most brute force. Having the clutch cover solid on the bolts clamped in the bench vice made the assembly much easier and therefore quicker for me.