Husqvarna 61, 266, 268, thru 272xp Series Chainsaw Crankshaft Replacement, Case Assembly

This Also Applies to the Jonsered 620 thru 670 series of saws.

Husqvarna Model 61 thru 272. Spans 15 plus years of saws. My 61 Rancher is a 1978 Husqvarna 61 "White Top" blended with a late 272 52mm top end.

Basically going to yet another level on these as the need to swap parts around to keep things OEM as possible. In this case, needed to put a 10mm crank in because it's what I had; where an 8mm crank resided. Ran into the differences in ignitions as they had evolved from a two coil system to a single coil system. SO the crank/flywheel/ two coil ignition was a system designed to work together......when they first went to the single coil system, they still were using the 10mm crank. Just changed the coil AND the flywheel, so now while the crank was still the same 10mm version, the singlw coil was obviously different and SO was the flywheel. Then when they went to the 8mm crank, the coil remained essentially the same but the crank and flywheel were different. Confusion is with the double to single coil change and the flywheel as they still have the same part number:
501 51 69 80 BUT there were different versions designated with a "V" number. My two coil flywheel had a "V1" and the single coil version a "V5"....something to look for.