Production run

Toro 21200 partsSerial 405700000–407799999

The 21200 run where hi-lift blade 20122P returns after two runs of Atomic. It is named in every run above that lists parts. All eleven are open.

At your boundary

What changes at the edges of this run

Mower blades

20120P→20122Pat 405700000

This range names hi-lift blade 20122P. The listing directly below, consecutive with this one, names Atomic 20120P and not 20122P.

This is where the blade goes back, and it stays back. Every run above this one that lists parts names the hi-lift, which makes the Atomic a two-run interruption rather than a direction of travel.

Engine oil

117-0066→138-6053at 405700000

This range names Toro Full Synthetic 10W-30 Engine Oil (32 oz.) 138-6053. The listing directly below, consecutive with this one, names *OBS* Toro full synthetic 10W-30 engine oil 117-0066 and not 138-6053.

Unlike the blade, this is a number arriving for the first time: 138-6053 is named here and for every run above that lists parts, and for none below. Toro states the relationship: requesting the 117-0066 product URL serves the 138-6053 page under “Replaces Product 117-0066”.

In detail

This production run

The 21200's blade comes back to hi-lift 20122P here and never changes again.

The run directly below names the Atomic 20120P, and the one below that does too. Below those, the two earliest runs name the hi-lift. So the Atomic blade occupies exactly two of the eleven listings Toro publishes, and this is the run that ends it.

Because the two listings either side are consecutive in Toro's selector, 405700000 is the serial itself.

A part number that returns is the finding this route family exists for. Read only the earliest and latest listings for this model and the blade looks unchanged; read only the middle and the Atomic looks current. Both are wrong, and only opening every run shows it. The 21199 does the same thing across four runs rather than two.

The engine oil changes at the same serial, and it does not go back. The four runs below name *OBS* Toro full synthetic 10W-30 engine oil, 117-0066; this run and every run above it that carries an accessory list name 138-6053. Requesting the 117-0066 product URL serves the 138-6053 page under the line “Replaces Product 117-0066”, so on this one Toro states the supersession.

No engine maintenance kit is named for this range, and none for any run above 403599999. That is recorded as unknown, not as a statement that none is needed.

Confirmed

What we have recorded for this serial range

We record the part categories this site covers. Toro’s own listing for this range carries other accessories besides.

Mower blades
15.4 Inch Hi-Lift Replacement Blade Kit (TimeMaster) 20122P
Listed by Toro as 15.4 Inch Hi-Lift Replacement Blade Kit (TimeMaster) on its official parts page for model 21200, serial range 405700000–407799999.
Fuel treatment
Premium Fuel Treatment (0.5 oz.) 130-2393
Listed by Toro as Premium Fuel Treatment (0.5 oz.) on its official parts page for model 21200, serial range 405700000–407799999.
Fuel treatment
Premium Fuel Treatment (12 oz.) 131-6572
Listed by Toro as Premium Fuel Treatment (12 oz.) among the accessories on its parts page for model 21200, serial range 405700000–407799999.
Engine oil
SAE 30 4-Cycle Lawn Mower Engine Oil 32 oz 38903
Listed by Toro as SAE 30 4-Cycle Lawn Mower Engine Oil 32 oz among the accessories on its parts page for model 21200, serial range 405700000–407799999.
Engine oil
SAE 30 4-Cycle Summer Engine Oil 18 oz. 38916
Listed by Toro as SAE 30 4-Cycle Summer Engine Oil 18 oz. among the accessories on its parts page for model 21200, serial range 405700000–407799999.
Engine oil
Toro Full Synthetic 10W-30 Engine Oil (32 oz.) 138-6053
Listed by Toro as Toro Full Synthetic 10W-30 Engine Oil (32 oz.) among the accessories on its parts page for model 21200, serial range 405700000–407799999.
Striping kits
30 Inch Lawn Striper for Walk Power Mower (WPM) 20602
Listed by Toro as 30 Inch Lawn Striper for Walk Power Mower (WPM) among the accessories on its parts page for model 21200, serial range 405700000–407799999.

Not listed here

Listed for a neighbouring run, but not this one

Absence from a parts listing is not a statement that a part does not fit. It is the manufacturer not saying.

130-8149 Not verified
Toro does not name BRIGGS MAINT KIT - TM 17 & NEWER (130-8149) among the accessories on its parts page for model 21200, serial range 405700000–407799999.
130-8146 Not verified
Toro does not name Engine Maintenance Kit for Walk-Behind Power Mower (130-8146) among the accessories on its parts page for model 21200, serial range 405700000–407799999.
20120P Not verified
Toro does not name 15.4 Inch Atomic Blade (20120P) among the accessories on its parts page for model 21200, serial range 405700000–407799999.
117-0066 Not verified
Toro does not name *OBS* Toro full synthetic 10W-30 engine oil (117-0066) among the accessories on its parts page for model 21200, serial range 405700000–407799999.
20601 Not verified
Toro does not name Striping Kit for Walk-Behind Mowers (20601) among the accessories on its parts page for model 21200, serial range 405700000–407799999.

If you are close to the edge

Serial numbers near a boundary

The lower edge is sharp and the run below it is consecutive. A serial just under 405700000 falls where Toro names the Atomic blade instead.

Where Toro puts the serial plate

Other runs

Other production runs of the 21200

Toro publishes 11 parts listings for this model number. We have opened 10.

Method

How we established this

We opened all eleven listings Toro publishes for model 21200, a count taken from the serial-range selector the pages carry, and compared the accessories they name against the parts this site holds. Ten carry an accessory list; 413000000–414514168 carries none and nothing is scoped to it. The pages also carry accessories this site holds no record for, so this is a comparison within the categories it records rather than an exhaustive diff of what they list.

The common mistake: Assuming a part number only ever moves forward. On both TimeMasters it moves back, and the run it moves back at differs between them.

Provenance

Sources

Last verified against these sources on August 21, 2026.

1
Parts — 30in TimeMaster Electric Start, model 21200, serial range 405700000–407799999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
2
Parts — 30in TimeMaster Electric Start, model 21200, serial range 404320000–405699999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20120P, and does not name 130-8149, 130-8146, 20122P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
3
Parts — 30in TimeMaster Electric Start, model 21200, serial range 400000000–402081999
The Toro Company · Primary source · Accessed August 20, 2026
Lists 130-8149 (BRIGGS MAINT KIT - TM 17 & NEWER) and 20122P (15.4 Inch Hi-Lift Replacement Blade Kit (TimeMaster)), plus 490-7461 and 130-2393.
4
Parts — 30in TimeMaster, model 21199, serial range 410243167–411509999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
5
Parts — 30in TimeMaster Electric Start, model 21200, serial range 402082000–403599999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 130-8146, 20122P, and does not name 130-8149, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
6
Parts — 30in TimeMaster Electric Start, model 21200, serial range 403600000–404319999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20120P, and does not name 130-8149, 130-8146, 20122P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
7
Parts — 30in TimeMaster Electric Start, model 21200, serial range 407800000–410174254
The Toro Company · Primary source · Accessed August 20, 2026
No engine maintenance kit appears anywhere in this range’s accessory list. Blade 20122P is listed; 20120P is not.
8
Parts — 30in TimeMaster Electric Start, model 21200, serial range 410174255–411599999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
9
Parts — 30in TimeMaster Electric Start, model 21200, serial range 411600000–412251182
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
10
Parts — 30in TimeMaster Electric Start, model 21200, serial range 412251183–412999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
11
Parts — 30in TimeMaster Electric Start, model 21200, serial range 414514169–999999999
The Toro Company · Primary source · Accessed August 20, 2026
The latest published range. Still no engine maintenance kit, and blade 20122P is listed.
12
OIL-30/10W-30 SYNTHETIC CK4 [QT] (Part # 138-6053), served at /product/117-0066
The Toro Company · Primary source · Accessed September 5, 2026
Requesting the 117-0066 product URL serves the page for 138-6053 under the line “Replaces Product 117-0066”, which is Toro stating the oil supersession directly rather than this site inferring it from which number sits against which serial range. Re-read 31 August 2026 and unchanged, and again 5 September 2026. Internal designation OIL-30/10W-30 SYNTHETIC CK4 [QT]. One bullet frames the oil for zero-turn riding mowers (TimeCutter MX, Titan, Titan MX) while the overview calls it the choice for any outdoor power equipment; the page names no walk-behind model. It does state a capacity — the title reads “(32 oz.)” and the first bullet repeats “10W-30 engine oil (32 oz.)” — corrected 5 September 2026 from an earlier reading that missed it.
13
OIL-30/10W-30 SYNTHETIC CK4 [QT] (Part # 138-6053)
The Toro Company · Primary source · Accessed August 28, 2026
The same page served at its own number, and it is the same page carrying that one “Replaces Product 117-0066” line — so Toro states the supersession once and either number reaches it, which is not the same as stating it from both directions. This page is now also the source for part 138-6053 itself: batch 13 created the pt_engine_oil category, so the clause that used to sit here — that engine oil is in no category this site records — stopped being true the moment that batch was staged.
14
Parts — 30in TimeMaster Electric Start, model 21200, serial range 413000000–414514168
The Toro Company · Primary source · Accessed August 21, 2026
Toro publishes this listing for the model and serial range, and it carries no accessory list at all — assembly drawings, a downloadable parts catalog and manuals only. We opened it and there is nothing on it to record, which is why no fitment on this site is scoped to this range. That is different from a part being absent from a list: this page makes no statement about any part.
15
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 400000000–402081999
The Toro Company · Primary source · Accessed August 17, 2026
Earliest of the four ranges we opened. Lists 130-8149 (BRIGGS MAINT KIT - TM 17 & NEWER) and 20122P (15.4 Inch Hi-Lift Replacement Blade Kit (TimeMaster)). The range selector names ten further ranges for this model number.
16
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 402082000–403599999
The Toro Company · Primary source · Accessed August 17, 2026
One range later. The maintenance kit is 130-8146 (Engine Maintenance Kit for Walk-Behind Power Mower) where the preceding range listed 130-8149. Blade 20122P is unchanged.
17
Parts — 30in TimeMaster, model 21199, serial range 403600000–404319999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20120P, and does not name 130-8149, 130-8146, 20122P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
18
Parts — 30in TimeMaster, model 21199, serial range 404320000–405599999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20120P, and does not name 130-8149, 130-8146, 20122P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
19
Parts — 30in TimeMaster, model 21199, serial range 405600000–407699999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20120P, and does not name 130-8149, 130-8146, 20122P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
20
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 407700000–410243166
The Toro Company · Primary source · Accessed August 17, 2026
No engine maintenance kit appears in this range’s accessory list at all. The blade shown is 20120P (15.4 Inch Atomic Blade), not 20122P.