Flywheel puller ...
If you are not planning to replace the crankshaft bearing on the left side, just leave the flywheel in place. Just handle the left hand side with the crankshaft very carefully.
Indeed, if you have all the bits and pieces, gaskets, tools, etc, you could even do it in 8 hours.
As you say, you have a gasket set - if it is not orginal Yamaha, you WILL have oil leaks after a few thousand of km's. At least get yourself all the gaskets and oil seals in the top end original from Yamaha. Th O-rings in the bottom do not matter so much.
Further, the liquid gasket that is used to seal the two crankcase halves and the valve cover MUST harden at least 24 hours at room temperature before you start the engine ... otherwise again, you WILL have oil leaks.
Auke
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