ufo wrote:

Most, if not all "small" 2 strokers with an arrow on the piston top
will need the arrow to point toward the flywheel end of the
crankshaft.

The arrows on top of every Yamaha and Suzuki piston I ever saw pointed
forward, toward the exhaust port. The OP's engine could not possibly be
assembled with the arrow pointing *sideways* because the
connecting rod would also have to be twisted sideways...