Calibrating the Yamaha Autolube oil pump.

This is a video on how to calibrate the Yamaha Autolube oil pump for the 1970 Yamaha CT1B, 1974 DT250 and others. different years and models have different specs as far as oil output. In the service manuals, there is a spec for clearance between the pump pulley and the plate. You can use these. I prefer to calibrate it this way because then I know for sure how much oil the pump is putting out. To me that's most important. ***I should have explained that you need to make a block-off plate with a gasket to close off the open side of the pump. Otherwise the oil will just leak out and no oil will be pumped. Also, open the bleed screw and let the oil run out until no air is left in the pump.