Toro 21485
Fuel treatment for the Toro 21485
Short answer
Both sizes on every run that names accessories. The run that names nothing is the narrowest this machine has, and the runs either side agree exactly.
Verified options
What we have verified
| Part | Serial range | Status |
|---|---|---|
| 130-2393Premium Fuel Treatment (0.5 oz.) | 400000000–415399999 | Confirmed fit |
| 130-2393Premium Fuel Treatment (0.5 oz.) | 415400000–418396424 | Confirmed fit |
| 130-2393Premium Fuel Treatment (0.5 oz.) | 418396425–419999999 | Confirmed fit |
| 130-2393Premium Fuel Treatment (0.5 oz.) | 420631776–999999999 | Confirmed fit |
| 131-6572Premium Fuel Treatment (12 oz.) | 400000000–415399999 | Confirmed fit |
| 131-6572Premium Fuel Treatment (12 oz.) | 415400000–418396424 | Confirmed fit |
| 131-6572Premium Fuel Treatment (12 oz.) | 418396425–419999999 | Confirmed fit |
| 131-6572Premium Fuel Treatment (12 oz.) | 420631776–999999999 | Confirmed fit |
What decides it
The numbers that matter here
- Which size
The packet is one dose; the bottle is a supply
Toro calls 130-2393 a single-use dose on its own product page. Nothing on these listings says so, and no page here publishes a ratio for the 12 oz bottle.
- If your serial is 420000000–420631775
Your listing names no accessories — and the runs either side are identical
Both name the same thirteen numbers, both treatments included. Nothing changed across that window, so the pages above and below it answer for it.
- Serial range
Decides nothing for this category
Both numbers are on every listing that names accessories, from the oldest run to the newest. The one part that ever changes on a 21485 is the discharge chute.
- Why the gap is worth explaining
You buy a treatment repeatedly, not once
An owner inside that window will look this up for as long as they own the machine and see an empty page each time. Knowing the runs either side agree is what makes that harmless.
- 131-3823 is not a treatment
It is ready-mixed fuel, listed alongside on every run
Fuel itself rather than an additive, which its own product page settles. It has never appeared on this site without 131-6572 next to it.
In detail
Choosing fuel treatment for this mower
Toro lists two fuel treatments for the 21485 and lists both on every listing that names accessories: 130-2393, a 0.5 oz packet, and 131-6572, a 12 oz bottle. Neither enters or leaves at any serial.
One run names nothing at all: 420000000–420631775. **It is the narrowest window this machine has.** Its other runs cover 15.4 million, 3.0 million and 1.6 million serial numbers, and the newest is open-ended with no upper serial at all. This one covers 631,776. Toro cut a small slice out of the middle of the 21485's serial line and published no accessory list inside it.
**The runs on either side name the identical thirteen numbers**, this pair of treatments among them. Not similar lists and not overlapping ones — the same thirteen. Nothing entered and nothing left across the window, so what a reader inside it should buy is fixed by two lists that agree completely.
**That matters more for this category than for most of the others on this site.** A blade is bought once in a while and a discharge chute perhaps never. Fuel treatment is bought again every time the tank is filled. An owner whose serial falls inside that window is not looking this up once and moving on — they are looking it up for as long as they own the mower, and finding a page with nothing on it every time. The two runs bracketing it are the answer, and they do not disagree with each other about anything.
Between the two sizes, the packet is a **single-use dose**. Toro says so on the packet's own product page and on none of these listings, whose descriptions end by pointing at the product label instead. The bottle is a supply, and no page here publishes a ratio for it.
131-3823 is the third number on these listings and is not a treatment. It is All Season 4-Cycle Fuel: fuel itself rather than something added to fuel. It sits inside those identical thirteen on both sides of the window, and it has never been listed anywhere on this site without 131-6572 beside it.
The mistake we see most
Method
How we established this
We opened all five listings Toro publishes for model 21485 and recorded which fuel treatments each names. The two runs bracketing the empty window were re-opened on 31 August 2026 and compared as complete accessory lists, which is how the set identity was established rather than by looking the treatments up alone. The window's width was compared against this machine's other runs, every one of which is wider.
Same machine
Other parts we have verified for the Toro 21485
Other machines
Fuel treatment on the other mowers we cover
The answer is not the same on every machine, which is the point of checking rather than assuming.
Provenance
Sources
Last verified against these sources on August 31, 2026.
- 1
Parts — 22in Recycler Max, model 21485, serial range 400000000–415399999
The Toro Company · Primary source · Accessed August 22, 2026
Lists chute 139-6556, blade 59534P and engine maintenance kit 130-8148, with thirteen items in all. This is one of the two ranges carrying the older chute.
- 2
Parts — 22in Recycler Max, model 21485, serial range 415400000–418396424
The Toro Company · Primary source · Accessed August 22, 2026
Lists chute 139-6556, blade 59534P and engine maintenance kit 130-8148, with thirteen items in all. This is one of the two ranges carrying the older chute.
- 3
Parts — 22in Recycler Max, model 21485, serial range 418396425–419999999
The Toro Company · Primary source · Accessed August 22, 2026
Lists chute 147-8696, blade 59534P and engine maintenance kit 130-8148, with thirteen items in all. This is one of the two ranges carrying the replacing chute.
- 4
Parts — 22in Recycler Max, model 21485, serial range 420631776–999999999
The Toro Company · Primary source · Accessed August 22, 2026
Lists chute 147-8696, blade 59534P and engine maintenance kit 130-8148, with thirteen items in all. This is one of the two ranges carrying the replacing chute.
- 5
Parts — 22in Recycler Max, model 21485, serial range 420000000–420631775
The Toro Company · Primary source · Accessed August 22, 2026
This listing carries no accessory list at all. What it does carry is seven of Toro’s assembly drawings — Deck Decal, Engine and Blade, Front Wheel and Height-of-Cut, Handle, Housing, Rear Bag, and Rear Wheel and Height-of-Cut — and the usual Parts & Manuals section. Recorded as a source so the range is accounted for, and scoped to no fitments: a page that lists nothing is not a page that lists an absence.
- 6
Premium Fuel Treatment (0.5 oz.) (Part # 130-2393)
The Toro Company · Primary source · Accessed August 31, 2026
The number requested, no redirect and no “Replaces Product” line. Opened for the first time on 31 August 2026 — the most-listed fuel number on this site had never had its own URL asked. It publishes one thing the parts listings do not: the page calls the packet a “single-use dose”, where every listing description ends by telling the reader to check the product label for the correct dosage. Internal designation TORO PREMIUM FUEL TREATMENT .5 OZ, and the title reads 0.5 oz — two surfaces against the .05 oz. printed for the same number on kit 20298. It names no machine.
- 7
All Season 4-Cycle Fuel for Lawn Mowers and Snow Blowers 32 oz (Part # 131-3823)
The Toro Company · Primary source · Accessed August 31, 2026
The number requested, no redirect and no “Replaces Product” line. Internal designation 4-CYCLE FUEL, SNOW AND LAWN, 32OZ CAN. Toro describes it as “ethanol-free fuel formulated specifically for outdoor power equipment engines” with “no mixing required — pours straight in”. That settles what it is: fuel itself, not something added to fuel, which is why it is not filed beside the Premium Fuel Treatments in pt_fuel_additives. Recorded as a source with no part and no fitments while the category question is with the owner — the evidence is kept even though the record is not made.
- 8
Premium Fuel Treatment (12 oz.) (Part # 131-6572)
The Toro Company · Primary source · Accessed August 31, 2026
Toro’s own page for the number requested, with no redirect and no “Replaces Product” line in either direction. It describes what the treatment is for — protecting small 2-cycle and 4-cycle engines from ethanol-blended fuels — and names no machine, model or engine, so it establishes what the part is and nothing about what it fits. Every fitment for this number rests on the parts listings instead. **Re-read 31 August 2026 and unchanged.** Internal designation TORO PREMIUM FUEL TREATMENT 12 OZ BTL. It publishes no ratio: a bullet says to refer to the product label for the correct dosage for your fuel tank size, which is a pointer rather than a quantity.