Alternator looks cooked. Regarding head swap idea - have you considered that the valves will have different play in the guides? Might want to do the wiggle test. You also might need to lap them if you are going to swap parts
Hi, depending on wear yes it is relatively straightforward. I dismantled the whole bike due services the rest of the frame etc, however you can drop the engine with the bike in tact, a few engine mounting bolts and the wiring harness and you're good to go. I really struggled with the swing arm bolt that runs through the back of the engine which has corroded heavily on the aluminium bushes, had to get it hydraulic pressed out but that was due to the wear of the bike. Hope this helps, best of luck!
Would you recommend replacing this evil plastic part early to avoid this, or even replace it with a metal one? For someone lacking the mechanical skill (or time) to do what you show here, this would be a junked bike.
Hi Per, I'd recommend looking out for the signs of Timing chain adjustment. Keeping the services regular and checking the slack. I was pretty unlucky as I was due to replace the timing chain but unfortunately it didn't want to wait! The plastic was a by-product of the timing chain slipping, having at a metal one probably would have made the bottom end worse.
