Just found this site and I am ssooo glad I did. Wealth of info here. I have a problem...oil pressure light came on while running my L2250. Noticed prior to a solid on light the light was staying lit for 20 seconds when first started. Now it won't go off. Removed oil filter to see if oil was being pumped..start engine...no oil coming out. No oil in filter or minimal amount. Question is what to do. Is oil pump internel? Hard job? Thanks for any help.