Find Your Mower’s Model & Serial Number Plus Order the Right Part the First Time

Every week the same thing happens at the counter. Somebody needs a blade, a belt, or a spindle, and the whole order stalls not over the part, but over the numbers. “It’s a yellow 60-inch zero-turn” doesn’t get you a part. The model and serial number do. They are the difference between the right part showing up the first time and three trips, two wrong boxes, and a mower sitting in the shop through a cutting week.

Here’s the good news: once you know where each brand hides its tag and how to read what’s stamped on it, you’ll never guess again. This is the exact process I use behind the counter every day, brand by brand.

01Two numbers, one job

Almost every mower carries two pieces of identity, and they do different work:

The model number tells you what the machine is the family, the deck size, and often the engine. It’s the same across every unit of that configuration.

The serial number tells you which exact machine you have. It pins the build and, more importantly, the running changes. Manufacturers quietly revise parts in the middle of a model run where a spindle gets a new bearing, a wheel motor changes suppliers, a deck belt goes from one length to another. The serial is how a parts system knows which version is bolted to your mower. That’s why a good counter person asks for it even after you’ve given them the model.

02The machine and the deck are not the same thing

This trips up more people than anything else, and Kubota is the clearest example. The mower has its own identity plate and the deck has a completely separate model and serial of its own. The same machine can leave the factory with different deck sizes and deck revisions, so the deck tag is the one that actually tells you blade length, spindle, belt, and deck shell.

Rule of thumb: deck parts come off the deck tag; everything else comes off the machine plate. Some brands (Exmark, for one) put it all on a single plate and skip the separate deck tag so don’t go hunting for a deck number that isn’t there. Knowing which is which saves the wrong-blade phone call.

03Where the tag hides, by brand

Tag locations are maddeningly inconsistent between manufacturers. Here’s where to look on the five most common zero-turns I see.

Kubota

The machine plate (model + PIN) is on the footrest frame, above the deck, where your feet rest. The deck has its own tag on the back-right of the deck as you sit on it. Bonus: Kubota also puts a periodic service chart under the seat it’s not a serial, but it’s gold for fluid capacities, tire pressures, and service intervals.

Exmark

One plate, on the frame where your feet rest, above the deck which is the same neighborhood as Kubota’s machine plate. No separate deck tag; the deck size is baked into the model number instead (more on that below).

Ferris

Ferris (built by Briggs & Stratton) tags the right side of the mower frame, on the grass-discharge side of the deck, near and just below the deck-height mechanism. It’s a small white plate, easy to miss until you know to crouch and look there.

Cub Cadet

Look under the seat. Cub Cadet’s label gives you model, the date of manufacture (handy for warranty), and the serial all in one spot.

Wright

Wright tucks a small plate inside the right control panel. Sit on the machine, look down at the right console, and it’s right there. Model on top, serial below it.

04How to actually read a model number

Here’s the part that turns you into the person at the counter who already knows what they need. On most commercial mowers, the model number isn’t random, it bakes in the deck size and the engine. Once you see the pattern, you can read a machine across a showroom.

Take this Wright:

The two highlighted blocks are the ones that matter most: 61 is a 61-inch deck, and FT730 means a Kawasaki FT730V engine. Now an Exmark:

Same idea: 604 is a 60-inch deck, and the 730 / GK tells you it’s a Kawasaki FX730V. Notice both model numbers carry “730” that’s the 726 cc Kawasaki V-twin class shared by several engines. The letters in front are what separate an FT730 from an FX730, and that engine series is the detail that actually changes filters, plugs, and tune-up parts. If you want to go deeper on what those engine prefixes mean and how long each lasts, that’s its own rabbit hole. I broke it down in Zero-Turn Engine Codes Decoded: FR, FS, FX, ECV.

One honest caveat: conventions vary by brand, and the combinations are endless there are deck sizes from 32 inches up past 72, a dozen engine families, and revision letters that roll over year to year. Don’t try to memorize every code. Learn the pattern (deck size and engine are usually in there), then confirm against the actual tag and a parts lookup before you buy.

05Order the right part the first time

When you call or walk up to a parts counter, hand over all of this and you’ll skip the back-and-forth:

• Machine model + serial — off the plate for your brand (see the map above).
• Deck model + serial, if it’s separate — Kubota and some others tag the deck on its own. Critical for blades, spindles, belts, and the deck shell.
• Engine make, model, spec, and serial — read straight off the engine’s tag, not the mower’s. The engine number is a different animal from the mower serial.
• What failed and how — “won’t engage,” “throws the belt,” “leaks here.” Symptoms catch the parts a number alone misses.

Two more things that save you. First, supersession: part numbers get retired and replaced all the time. The old number still cross-references to the current one, so don’t panic if “your” number shows as obsolete, it just rolled forward. Second, when in doubt on a belt or blade, measure the old one (belt length and width, blade length, center-hole and outer-hole pattern) and bring those numbers as a backup.

And if you’re buying a used machine, the tag hunt happens before money changes hands, a missing or ground-off serial is a red flag worth asking about. I cover that in How to Inspect a Used Zero-Turn Mower Before You Buy.

06Quick reference: where the tag lives

07FAQ