How to Dial In Espresso on the Lelit MaraX Step by Step
By Kiss the Hippo Coffee | London's Premier Specialty Coffee Roastery | Published: 2026-10-16
Category: How-to Guides
A practical, step-by-step dial-in routine for the Lelit MaraX: set your grinder, lock in a repeatable recipe, and fix sour or bitter shots without wasting coffee.
Quick answer
Dial in the Lelit MaraX by changing one variable at a time: hold your dose and yield steady, adjust the grind finer or coarser, and taste the shot before touching anything else. Start with a 1:2 ratio in 25–30 seconds, then move the grind in small increments until the shot tastes balanced rather than sour or bitter. Because the MaraX manages brew temperature with its double-probe HX system, you can skip the cooling flushes traditional heat exchangers need and focus on grind, dose, and yield.
Set a repeatable baseline before you change the grind
A dial-in only works if every shot starts from the same place. Weigh your dose on a scale rather than filling the basket by eye, because a half-gram difference changes how fast water moves through the puck. Pick a dose that fits your basket without touching the shower screen, then keep it fixed for the whole session.
Choose a target yield and time you can repeat. A common starting point is 18 g in and 36 g out in 25–30 seconds, but your coffee and basket may prefer something slightly different. Write down the numbers so you can compare shots instead of guessing from memory.
- Weigh every dose; avoid scooping by volume.
- Decide your yield target before pulling the first shot.
- Keep a simple log of dose, yield, time, and taste.
Warm up the MaraX properly
The MaraX is designed to be switched on and used, but it still needs time to reach stable temperature. Lelit states that after about 24 minutes from switch-on you can pull café-grade espresso, so plan your session around that window rather than pulling shots immediately.
If you skip the warm-up, the first shot often runs differently from the second and third. That variation makes grind adjustment confusing, because you are reacting to machine temperature instead of the grind.
- Switch on and wait roughly 24 minutes before the first shot.
- Pull a blank or flush if the machine has been idle a while.
- Pull one throwaway shot if you are changing coffee.
Adjust the grind in small, controlled steps
Espresso grind adjustment is the main lever you will use. If the shot runs too fast and tastes thin or sour, move the grinder finer. If it runs too slow and tastes harsh or bitter, move it coarser. The key is to change only the grind, keep dose and yield the same, and taste the result before adjusting again.
A 64 mm flat-burr grinder like the Lelit Steve gives you repeatable adjustment because the burr set is designed for café-grade consistency. That consistency matters more than any single setting number, since two grinders rarely share the same scale.
- Move finer for fast, sour shots; coarser for slow, bitter shots.
- Change one small step at a time, then re-taste.
- Ignore other people's grind numbers; use your own taste as the reference.
Read the shot and fix the common faults
Once your dose, yield, and time are close, taste is the final judge. Sour, sharp, or salty notes usually mean under-extraction, so grind finer or extend the yield slightly. Dry, bitter, or ashy notes usually mean over-extraction, so grind coarser or shorten the yield.
Channeling is the other frequent problem: water finds a weak point in the puck and the shot runs unevenly. Improve your distribution and tamp before you blame the grind, because a badly prepared puck can mimic a grind problem.
- Sour or thin: grind finer or increase yield.
- Bitter or harsh: grind coarser or reduce yield.
- Uneven flow: check distribution and tamp before changing the grind.
Step-by-step MaraX dial-in routine
- 1. Switch on and wait about 24 minutes: Lelit states the MaraX reaches café-grade espresso performance roughly 24 minutes after switch-on. Use that time to weigh beans and prepare your basket. Checkpoint: the machine should be fully warmed before you judge any shot.
- 2. Lock in dose and yield: Weigh your dose and choose a target yield, such as 18 g in and 36 g out. Keep both fixed for the rest of the session so only one variable changes at a time. Mistake to avoid: changing dose and grind together, which makes the result impossible to read.
- 3. Pull a reference shot and time it: Run the shot and record the time from first drop to your target yield. This gives you a baseline to compare against, not a final verdict. Checkpoint: if the shot is far outside 25–30 seconds, adjust the grind next.
- 4. Adjust the grind one small step at a time: Grind finer if the shot ran fast and tastes sour; grind coarser if it ran slow and tastes bitter. Change only the grind, then pull another shot. Mistake to avoid: making large grind jumps, which overshoot the sweet spot and waste coffee.
- 5. Taste, then fine-tune yield if needed: If the grind is close but the shot still tastes slightly sour or bitter, adjust yield by a few grams rather than moving the grind again immediately. Checkpoint: balanced sweetness with mild acidity usually means you are dialed in.
- 6. Record the recipe and repeat it: Write down the dose, yield, time, and grinder setting that worked. Next session, start from that recipe and make only small corrections for bean age. Mistake to avoid: relying on memory, which leads to chasing the same setting twice.
Gear that makes dialing in easier
- Lelit MaraX: The Lelit MaraX V2 uses a patent-pending double-probe heat-exchanger system that actively manages brew and steam temperature, removing the cooling flushes traditional HX machines require. Fewer flush variables means your dial-in is driven mainly by grind, dose, and yield, which makes repeatable shots easier to achieve at home.
- Lelit Steve Coffee Grinder: The Lelit Steve Coffee Grinder uses 64 mm flat burrs co-developed with Keber, with a 7-digit LED display and dual workflow for programmed dosing or on-demand grinding. Consistent, repeatable grinding is the foundation of espresso grind adjustment, so a grinder built for café-grade consistency reduces the noise in your dial-in process.
- Aeropress Go: The AeroPress Go is a compact travel coffee maker that packs into a portable mug and is designed for travel, camping, or office brewing. If you travel or want a second brewing method for experimenting with the same coffee, the AeroPress Go lets you compare flavors without changing your espresso setup.
