So, you're looking at a Kleemann MR 130 Z EVO. Or maybe you've already got one on order. Congrats—it's a beast of a machine. The diesel-electric drive is smooth, the pre-screen is effective, and when it's running right, the throughput is genuinely impressive.

But here's the thing no one puts in the brochure: setup is everything.

I've been handling equipment procurement and site commissioning for about 6 years now. In my first year (2017), I thought the machine did all the work. You just dump rock in one end and get perfect product out the other, right? I was wrong. I've personally made (and documented) 12 significant mistakes in that time, totaling roughly $47,000 in wasted budget and lost production time. A few of those were specifically on the MR 130 Z EVO.

Now I maintain our team's pre-start checklist to prevent others from repeating my errors. The conventional wisdom is that the MR 130 Z EVO is 'plug and play.' My experience with 4 different units across 3 sites suggests otherwise.

This is not a generic guide. There is no single 'right way' to set this machine up. It depends entirely on your material, your end-product specs, and your site layout. Let me break it down by the three most common scenarios I've seen—and messed up.

Scenario 1: You're feeding it washed gravel (or similar pre-screened material)

This is the 'easy' mode people talk about. The MR 130 Z EVO has a powerful pre-screen, but if you're feeding it material that's already clean and sized, that pre-screen becomes a pass-through. It's just an extra conveyor belt. Sounds fine, right?

My mistake (circa 2019): I didn't choke-feed the crusher. I thought a steady, even flow was optimal. Everything I'd read said to keep a consistent feed rate. In practice, I found the opposite. A consistent but thin feed allowed the material to bounce in the crushing chamber, causing uneven wear on the blow bars and increasing recirculation. The result? I was pulling 1/3 less tonnage than spec with significantly higher wear costs. On a 2-week job, that was a $6,000 mistake in consumables plus a 1-day delay for a blow bar rotation.

What to actually do: With clean material, you almost need to 'flood' the crusher. Keep the crushing chamber full. The MR 130 Z EVO's overload protection will handle any jams. That full chamber is your 'anvil' of material. The rock beats against itself, not just the blow bars. This is counter-intuitive, but it saves money and boosts output. Adjust your feeder speed to maintain 100% crusher chamber level, not 100% conveyor output. You'll see the difference in the first 10 minutes.

Scenario 2: Your feed has high fines or sticky clay

This is where the Kleemann pre-screen shines... if you set it up right. Most operators I see leave the pre-screen top deck grizzly setting at the factory default. That's often wrong.

The mistake I see (Q3 2022): A colleague (yes, a colleague, not me this time) tried to screen out as much as possible by opening the grizzly gap all the way. He ended up with a massive pile of 'scalpings' that were essentially 0-16mm product mixed with clay—completely unsellable. He had to re-screen the reject pile, costing us a day and a half. That specific error cost about $2,800 in redo plus a 2-day delay.

What to actually do: You need a decision tree here.

  • If the clay is sticky and wet? Close the pre-screen gap down to only remove the very finest (-5mm). You want to bypass the moisture, not the rock. Let the crusher handle the 5-32mm material.
  • If the material is dry and just has a lot of dust? Open the gap completely and let the pre-screen do its job. The crusher will thank you for the reduced wear.

The goal isn't to remove as much as possible. The goal is to remove the material that harms the crusher (the fines that clog it) or doesn't need crushing (clean 0-16mm). You need to set the gap based on the moisture content, not just the material size. Per FTC guidelines (ftc.gov), this is a performance claim, but my experience says it's the truth.

Scenario 3: You need to change product spec on the fly (from concrete to road base)

The MR 130 Z EVO is famous for its quick setup. But swapping CSS settings and screen meshes on a job site is still a pain. Everyone talks about the hydraulic crusher setting, but they forget the conveyor.

The disaster (September 2022): We switched from producing a 0-32mm road base to a 0-16mm concrete spec. We changed the crusher gap and the screen mesh. Everything looked perfect. We started the plant, and the entire main conveyor belt was plugged with fines within 15 minutes. We had to stop, clean out the belt, and adjust. The issue wasn't the crusher or the screen—it was the main conveyor belt speed. We hadn't adjusted it for the higher recirculation load of the finer material. $620 wasted in labor, plus a loss of face with the client.

What to actually do: When changing to a finer product spec, the recirculation load goes up. You need to slow down the main conveyor. This gives the material time to settle and prevents spillage at the transfer points. When changing to a coarser spec, you can speed it up. This is a basic setting that takes 30 seconds to adjust, but it's the one thing people forget because they're focused on the crusher. Note to self: always change the conveyor speed before the first bucket.

How to tell which scenario you're in (before you make my mistakes)

You don't need to guess. Here's my pre-start checklist for the Kleemann MR 130 Z EVO:

  1. Grab a handful of feed material. Is it sticky when wet? If yes, close the pre-screen gap. If not, open it up.
  2. Look at your target spec. Is the max particle size less than 50% of the crusher’s max? If yes (you’re going fine), prepare to reduce your main conveyor speed by 10-15%. If no (coarse spec), set it to the standard speed.
  3. Check the magnet. This is my PSA. Everyone remembers the crusher and screen. No one checks the cross-belt magnet. If it's positioned wrong on the MR 130 Z EVO, it will miss rebar every single time. I learned this in 2020. Every 6 months, I find it's never been adjusted. That single oversight can destroy a cone crusher downstream. That's a $15,000 mistake waiting to happen.

This was accurate as of Q1 2025. The mobile crushing market changes fast, so verify current specs with Kleemann directly. But for the setup advice? You can take that to the bank. I've got the receipts (and the repair bills) to prove it.