Looking at a 1992 model Case 1840 with smooth bucket, toothbar, and forks. Unit has 1700 hrs and been used for by a landscaping contractor. Tires are about 75%. Need some of the Case experts help on the following as this will be my first skid steer. I've rented them before but they have always been foot/hand controls. I'll look at all the fluids that have dipsticks or caps but need advise on any specific items on this model to check....also what would be a good buy price on the machine assuming it is tight? It is a diesel....Does this year have the cummins? Thanks for the help! Skeet