Before you remove the pump pull back on c, and remove the clip. Then pull the pump. If you're replacing or rebuilding the engine crankshaft you'll want to remove the pto (a in your pic) with an impeller tool. Bernie you remove the engine.
Waow, thanks for a really quick answer. BIG THANKS
Going to try to replace the crank seals, loots of oils in the cylinders.
Do not know how to do it, but hope it will sort out when I take the botton of the engine, if you also got any tips here, I would be most grateful