01
The burr seat is cleaned first
New burrs on a dirty carrier sit crooked, and no setting on the collar fixes that. The seat goes back to bare metal before a burr is screwed down.
BRAND MAZZER · FIELD SERVICE · v.2026 · LAST VERIFIED OCTOBER 2026
Mazzer grinder repair & service.
Mazzer Super Jolly, Major, Kony, Robur, Kold and ZM grinders, old doser models included. Picked up by courier in Hollywood, Long Beach and San Diego, and sent back with the burr seat cleaned and the collar turning freely.
Service area LA · OC · IE · SD · Ventura — 25 cities
Brand Mazzer
Response time Same-day · ≤ 4 hrs avg
Dispatch (424) 352-8838 · 24/7 emergency
COLLECTED
Conical hopper, adjustment collar, chute, fork. The collar is the wear point nobody looks at: packed with coffee dust, it stops holding its setting.
SECTION 01 · WHY US
Four differentiators
02
The collar thread is serviced
Cleaned and oiled at every burr change, as Mazzer’s own procedure says. A collar that turns smoothly is one a barista will adjust instead of leaving alone.
03
Old doser models are welcome
Springs, sector plates, switches and capacitors for a twenty-year-old Super Jolly are stock items at US parts houses. The casting does not wear out.
04
The right hopper, the right damper
A V-series grinder that will not start, or one that sprays, is often carrying a part from an older model. That is checked before a fault is assumed.
Mazzer builds its grinders in Italy, and La Marzocco USA has imported and distributed them for more than twenty years. The design barely changes: a heavy cast body, a threaded collar that sets the grind, burrs screwed to a carrier. That is why a twenty-year-old Super Jolly is still worth repairing. It is also why the faults are the same ones every time: worn burrs, a dry collar thread, a tired capacitor, a blocked outlet.
SECTION 02 · MODELS WE SERVICE
Mazzer line-up
M-01
Super Jolly V Up and V Pro
64 mm flat burrs, 350 W. The V Pro runs burr set 233M, which Mazzer rates at 400 kg of coffee. The smallest Mazzer most cafes buy, and the one most often asked to do a bigger grinder’s job.
$1,545-$1,995 new
M-02
Major V and Major VP
83 mm flat burrs, 650 W, about 21 kg, double fan cooling. The Major V runs at 1,600 rpm on US power. The VP turns slower, at 1,080 rpm, on burr set k151H, rated at 1,200 kg against 600 kg for the standard 151A.
$2,495-$2,795 new
M-03
Kony S
63 mm conical burrs, 450 W, 500 rpm on US power. The low-speed conical for a mid-volume bar.
$3,295 new
M-04
Robur S
71 mm conical burrs, set 186C, 800 W, 500 rpm on US power, 28 kg, double fan. Mazzer rates the set at 800 to 1,000 kg.
$4,295-$4,595 new
M-05
Kold S
The Robur burr set in a 30 kg body, with a belt-driven transmission between the motor and the burrs.
$4,895 new
M-06
ZM and ZM Plus
83 mm flat burrs, 800 W, 33 kg and 39 kg. Burr sets rated at 1,200 kg, and a display that reports service alerts and statistics.
$4,445-$4,745 new
M-07
Mini and Philos
The Mini has 64 mm flat burrs on a 250 W motor. The Philos is Mazzer’s single-dose grinder. Both sell above a thousand dollars and both are serviced at the grinder price.
$1,295-$1,595 new
M-08
Older Super Jolly, Major, Kony and Robur
Timer and doser models, and the first Electronic generation. US parts houses still list burrs, capacitors, doser parts and switches for all of them.
SECTION 03 · COMMON PROBLEMS
What goes wrong on a Mazzer
- P-01 $180-$320
Doses slower every month (Super Jolly, Major)
Burr wear. Mazzer gives 400 kg for the 64 mm sets and 600 kg for the standard 83 mm set, and says plainly that its burrs cannot be resharpened. On a change the burr seat is cleaned to bare metal, the screws are tightened without forcing them, and the first doses are thrown away.
- P-02 $150-$230
Motor running, no coffee at the outlet
Mazzer’s own answer: the grind is too fine or the burr outlet is obstructed. Coarsen by two numbers. If that does not bring it back, the chamber and chute come apart. On V and S models four Allen screws open the chamber without moving the grind setting.
- P-03
Buzzes and will not start
On an older Super Jolly a motor that buzzes at fine settings and will not turn is often the start capacitor. On a Major that hums and then goes dead, the switch and the contactor are checked as well. Tested with a meter, not guessed.
- P-04
Will not run after cleaning
The hopper safety switch. A V or S model will not start without its hopper seated, and hoppers from older Major, Robur and Kony models do not actuate the switch. Check the hopper before anything is opened.
- P-05
Clumps or spray at the chute
The Grind Flow Control. It is a removable aluminium outlet insert with interchangeable wire dampers, and the wires are easily bent when the insert is pulled out. A damaged damper changes how the coffee leaves the chute. The insert is inspected, and the damper that suits your coffee is fitted.
- P-06 $150-$225
Collar stiff, or the setting will not hold
Coffee dust and old oil in the adjustment thread. Mazzer’s procedure has the thread cleaned and oiled at every burr change. After new burrs the contact point is found and the grinder is checked five notches back from it.
- P-07
Doser not sweeping or not returning
On the old doser models the lever return spring slips or breaks, and the tab on the sector plate bends. Small parts, still available.
MAZZER · WHAT A SERVICE COSTS
Grinder service$129 standalone / $89 add-on
The service figure is the same for a Mini and a Robur. A burr set is added only if the old one has run past Mazzer’s kilogram figure.
MAZZER · FIGURES
On the bench and on the bar.
Mazzer Robur S: 71 mm conical burrs at 500 rpm on US power, with two cooling fans.
Dose on demand into the portafilter. A dose that takes longer every week at the same setting is burr wear, measured in seconds.
SECTION 04 · SERVICE TYPES
From emergency calls
to PM contracts.
- Emergency Espresso Machine Repair Same-day dispatch when the machine is down — cafes get the first slot.
- Preventive Maintenance Contracts Quarterly descale, seals, and milk-system deep clean on a contract.
- Espresso Machine & Coffee Brewer Repair $145 diagnostic. Countertop machines we collect and return; plumbed and commercial machines we service on site. The $145 diagnostic is credited in full toward the repair when you approve the estimate.
- Espresso Machine Installation Plumbing, electrical, drain, and commissioning in one 4-8 hour visit.
- Water Filtration for Espresso Filtration matched to your water — scale is the #1 killer we see.
- Used Espresso Machine Refurbishment Buy-side inspections and full refurbs for used commercial machines.
COVERAGE · MAZZER
Where we service Mazzer.
A Mazzer grinder is collected by courier or serviced where it stands, and the coverage is the same for both: Mazzer repair in Hollywood, Mazzer repair in Long Beach and Mazzer repair in San Diego. Same prices in every one of them — 25 cities across six counties.
SECTION 05 · FAQ
Frequently asked.
Q-01 What does it cost to repair a Mazzer grinder?
The service is flat, and it is the figure above. Repairs are priced one fault at a time. Typical Mazzer work: burr replacement on a Super Jolly or Major $180-$320, chamber and chute strip $150-$230, collar thread service and contact point $150-$225. The conical sets for a Kony or Robur cost more and are quoted against the part. Typical, and written down before work starts. What the repair costs depends on what we find. You get a written estimate before anything is done, and you can decline it — we bring the machine back and nothing further is owed.
Q-02 How often do Mazzer burrs need replacing?
By weight of coffee. Mazzer’s indicative figures: 400 kg for a Super Jolly, 600 kg for a standard Major, 1,200 kg for a Major VP or a ZM, 800 to 1,000 kg for a Robur. A bar using 10 kg a week reaches 400 kg in about nine months. Mazzer burrs cannot be resharpened, so the set is replaced.
Q-03 Is an old Mazzer Super Jolly worth fixing?
Almost always. A burr set for it costs less than our diagnostic, the body is a casting, and every wearing part is still sold. The exception is a motor with a burnt winding. Then the sum is done against a used grinder, and we will do it with you.
Q-04 Are you a Mazzer dealer or service center?
Neither. We do not sell grinders, and nobody at Mazzer has appointed us. La Marzocco USA imports Mazzer and the warranty is one year on parts, so a new grinder with a fault goes back through the dealer who sold it. Past that year, it can come to us.
Q-05 Can I adjust the grind with the motor off?
Coarser, yes. Finer, no: with coffee between stationary burrs the collar packs the grounds into a plug, and the next start stalls the motor. US dealers treat that as operator error, not a defect. Go finer with the motor running.
Q-06 How long is a Mazzer away for a service?
A courier collects it and returns it, and the bench work on a doserless Mazzer is about an hour. The days either side are transport. If the bar has only one grinder, it does not have to leave: we send a technician, and the work is quoted in writing after the diagnostic.
SECTION 06 · CASE STUDY · HONEST OPINION
Typical call · how this fault usually goes
A typical call on a Major V: shot times have crept and the barista has been going finer for weeks, until one morning the motor runs and nothing comes out. The chamber is opened with its four screws. The outlet is packed solid. The burrs are measured and the coffee through them is added up from the weekly order: well past 600 kg on the standard set. New burrs on a cleaned seat, thread oiled, contact point found, first doses discarded. About 90 minutes on the bench.
Honest opinion
Most bars with a Super Jolly bought the wrong Mazzer. Its burrs are rated for 400 kg, and a shop grinding 10 kg a week is through them in nine months. The same shop on a Major VP would change burrs once in more than two years. If you are replacing Super Jolly burrs twice a year, stop buying burrs and move up a size. Until then, replace them on schedule. A worn 64 mm set costs you more in bad shots than the new set costs.
SECTION 08 · RELATED GUIDES
Worth reading before you call.
- Coffee Grinder Burr Replacement — Is It Time?
Burr life is published in kilograms, not years: 400 kg for a Mazzer Super Jolly, 6,000 kg for an EK43. How to tell worn from dirty, and who should do it.
- Is It Worth Repairing an Espresso Machine?
Usually yes, if the fix costs under half a replacement and the machine has years left. The arithmetic we run by machine class, and when to buy new instead.
- How Long Does an Espresso Machine Last?
Six to eight years for an entry machine, twenty-plus for a prosumer one. The build, the water it drank and whether anyone serviced it set the number.
SECTION 09 · SOURCES & VERIFICATION
LAST VERIFIED OCTOBER 2026
- R-01 Mazzer — burr codes and indicative service life Accessed October 2026
- R-02 Mazzer — Major V and Major VP tutorial (cleaning, burr change, no-output fault) Accessed October 2026
- R-03 Mazzer — Robur S specifications and Grind Flow Control Accessed October 2026
- R-04 La Marzocco USA — Mazzer Major V, Robur S, Kony S quick-start guide (chamber access, hopper switch, dampers) Accessed October 2026
- R-05 La Marzocco USA — Mazzer importer and distributor Accessed October 2026
- R-06 Espresso Parts — Mazzer grinders and grinder parts, US prices Accessed October 2026
- R-07 1st-line Equipment — Mazzer technical support (warranty, adjusting with burrs stationary) Accessed October 2026
- R-08 Home-Barista — Super Jolly start capacitor discussion Accessed October 2026
Every figure on this page is ours to stand behind — who we are and what we're licensed for.
SECTION 10 · DISPATCH REQUEST
Need Mazzer service?
Dispatch in hours.
Tell us your Mazzer model and what's wrong. We'll respond within the hour with a diagnostic estimate and ETA.
Dispatch hours Mon–Sat · 7am–9pm
Emergency · 24/7
Emergency · 24/7
Service area LA · OC · IE · SD · Ventura
25 cities · same-day
25 cities · same-day
Email service@socalcoffee.repair