I agree with the other members, it is up to you if you want to keep the inner workings intact or not. Many times that depends on your intended display location. Having said that, given the current price of scrap, I find the extra weight of leaving them intact provides me with an additional level of comfort when it comes to theft prevention especially if the pump is going to reside outside. The MS 80 is a common pump, but its design and quality of the metal, contribute to its longevity. It is one of my favorites.
