One thing that seems to escape mention in diagrams and manuals etc is the small sub-assembly that looks like some sort of idler gear that bolts on across the two crankcase halves via three 5mm Allen Head cap screws, under the clutch basket area. I believe this is just a simple little oil pump that pumps gearbox oil from the outer (clutch side) of the gearbox case and sprays the oil onto the gearbox shafts on the inside part of the gearbox, helping to keep the gears well lubricated. Even the NSR-World website incorrectly refer to this as the "Oil/Water pump drive gear". (Fourth to bottom picture here).

It just seems to me that no-one really knows what it actually does, and I would just like to know. I am pretty sure my description above is wrong too.
When I search the forum for "water oil pump idler" I get no results. This seems totally wrong. Maybe I am doing it wrong or the search is not working for some reason right now??

I discuss this more on my latest blog page here (Part 7) also if that helps?
Anyone?
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[color=#808080][size=9]Yes,.. I too know how to waste Time and Money,...