Remove the bolt and water hose joint.
Rear cylinder only.
Remove the О-ring from the hose joint.
Remove the joint clips from the water joint pipe.
While removing the cylinder, remove the water joint pipe.
Remove the cylinder.
Remove the gasket and dowel pins.
Remove the reed valve from the crankcase.
Clean the top of the each cylinder thoroughly to avoid damaging the gasket surfaces.
The gasket will come off easier if it is soaked in solvent.