1981 DT175 Autolube pump low output

Feb 21, 2020
THe autolube pump I have on my 1981 DT175 has below specs output. I rebuilt it with new seals and gaskets and checked the clearances which all are in specs. The output is consistently 3.2cc per 200 strokes. Specs call for it to be at least 4.6cc.I have rechecked this several times and it is consistent. Could my pump have been swapped out with a smaller cc bike pump that would require less output? Looking at autolube pumps for smaller models look the same but are not compatible.