Changing the impeller for the first time on a VP2002, I read the VP manual and it clearly stated "turn the new impeller clockwise as it is inserted" (or words to that effect in Anglo-Swedish). However, taking off the cover plate the blades were orientated the opposite way. I rang KP Marine at Bursledon and they said it doesn't matter, it will sort itself out. So I followed the handbook and turned it clockwise as I inserted it. It's been running for nearly an hour since relaunch without any overheating symptoms including a decent burst at medium/high revs. Anything to worry about? I'm not sure about the VP handbook as the diagram definitely shows the wrong bleed screw for the secondary filter.